Pitchlign , TJ TandemRoller, Inner Rings Heavy Duty Needle ... · Heavy Duty Needle Roller Bearings...

Heavy Duty Needle Roller Bearings

RBC Division www.rbcbearings.com800.390.3300

High load capacity, long life, caged roller bearings in standard configurations and custom designs

Pitchlign®, TJ TandemRoller®, Inner Rings

RBC Bearings Incorporated (RBC Bearings, RBC) has had a long tradi-tion of innovation, commitment, and quality since the company wasfounded in 1919. Today, RBC Bearings has grown into a world-classmanufacturer of standard and custom-engineered bearings and relatedproducts, with a product focus on research, testing, and development ofthe best product for specific applications.

What We Manufacture

RBC Bearings, with facilities throughout North America and Europe,provides bearings and precision products for applications in the con-struction, mining, material handling, transportation and off-highwayequipment, robotics and automation, farming, machine tool, and semi-conductor equipment industries. Through RBC Aerospace Bearings,the company is a major manufacturer of highly-engineered bearings andprecision products for military, defense, and commercial aerospaceapplications.

RBC's high-quality bearings include:

• Heavy Duty Needle Roller Bearings - Pitchlign® caged heavy dutyneedle roller bearings, inner rings, TJ TandemRoller® bearings for longlife.

• Spherical Plain Bearings - Radial, angular, contact, high misalign-ment, extended inner ring, DuraLube™ maintenance-free sphericalplain bearings, QuadLube® long life bearings, ImpactTuff® case carbur-ized bearings, ShimPack® double-acting angular contact bearings,CrossLube® lubrication groove systems, SpreadLock® Seal, andMillTuff™ 3-part bearings.

• Cam Followers and Yoke Rollers - Standard stud, heavy stud, yoketype, caged roller followers, RBC Roller® long life cam followers,HexLube® universal cam followers, airframe track rollers. Mastguiderollers and carriage rollers, chain sheaves (for leaf chain), toothlesssprockets (for roller chain), and heavy-duty roller bearing construction.

• Rod Ends - Commercial and aerospace, precision, Mil-Spec series,self-lubricating, inch and metric. Heim®, Unibal®, and Spherco®

brands.

• Self-Lubricating Bearings - Radial, thrust, rod ends, spherical plainbearings, high temperature, high loads, inch and metric. Fiberglide®

brand.

• Thin Section Ball Bearings - Standard cross sections to one inch.Sizes to 40 inches. Stainless steel and other materials available. Sealsavailable on all sizes and standard cross sections.

• Airframe Control Bearings - Ball bearing types, self-lubricatingtypes, needle rollers, track rollers.

• Ground, Semiground, and Unground Ball Bearings - Full comple-ment, utilizes design and burnished races for higher loads, long life, andsmooth operation.

• Dowel Pins, Loose Needle Rollers, Shafts

• Tapered Roller and Tapered Thrust Bearings - Case-hardened andthrough-hardened in a variety of sizes, used in Class 8 heavy truck andtrailer wheel bearings, final drive transmissions and gear boxes.

• Ball Screws - Precision ground, rolled, ball splines. Long life, lowwear, high accuracy, QuickTurn® Ball Screw Repair Service.

• Custom Designed Bearings - RBC produces a wide range of custombearings in various materials for specific applications.

RBC Heavy Duty Needle Roller BearingsRBC produces an extensive heavy duty needle roller bearing productline from 1 inch outer ring OD to 12.125 inch outer ring OD. RBCheavy duty needle roller bearings can be found in helicopter rotors andtransmissions, marine crankshafts and connecting rods, gear pumps, oilfield pumping jacks, and mud pumps.

The RBC SJ series of Pitchlign® heavy duty needle roller bearings aresupplied in standard envelopes in both sealed and unsealed configura-tions.

RBC TJ TandemRoller® heavy duty needle roller bearings increase thecapacity of the standard Pitchlign® SJ series from 10% to 40% whilemaintaining the standard SJ envelope.

RBC inner rings can be used separately or as an inner race for compli-mentary SJ or TJ roller bearings.

RBC produces metric roller bearings where volume permits.

How We Can Serve You

RBC has implemented a total quality control system that uses statisticalquality control at all facilities, and manufactures in high volume to ajust-in-time program.

To serve the ongoing needs of customers, RBC has a network of over1,600 distributors and sales engineers throughout North and SouthAmerica and Europe, with authorized agents worldwide. For assistancewith your bearing application, contact:

Customer Service - 800.390.3300

Warranty

RBC products are warranted for material and workmanship for a periodnot to exceed 90 days from shipment and for a value not to exceed pur-chase price. No other warranty is in effect.

Disclaimer and Intellectual Property Statement

The materials comprising this Catalog are provided by RBC BearingsIncorporated ("RBC Bearings, RBC") as a service to its customers on an "as-is"basis for informational purposes only. RBC assumes no responsibility for anyerrors or omissions in these materials. RBC makes no commitment to updatethe information contained herein.

RBC makes no, and expressly disclaims any, representations or warranties,express or implied, regarding the Catalog, including, without limitation, anyimplied warranties of merchantability or fitness for a particular purpose. RBCmakes no, and expressly disclaims any, warranties, express or implied, regardingthe correctness, accuracy, completeness, timeliness, and reliability of the text,graphics and any other items in the Catalog. Under no circumstances shall RBC,its affiliates, or any of their respective partners, officers, directors, employees,agents or representatives be liable for any damages, whether direct, indirect, spe-cial or consequential damages for lost revenues, lost profits, or otherwise, arisingfrom or in connection with this Catalog and the materials contained herein.

All materials contained in the Catalog are protected by copyright laws, and maynot be reproduced, republished, distributed, transmitted, displayed, broadcast orotherwise exploited in any manner without the express prior written permissionof RBC.

RBC's names and logos and all related trademarks (including RBC PartNumbers, Series Number, and Cone and Cup Numbers), tradenames, and otherintellectual property are the property of RBC Bearings and cannot be used with-out its express prior written permission.

© 1996 RBC Bearings Incorporated

TABLE OF CONTENTS

Precision Ground Heavy Duty Needle Roller Bearings 2 - 7

Precision Ground Heavy Duty Needle Roller Bearings with Seals 8 - 9

Inner Rings for Precision Ground Heavy Duty Needle Roller Bearings 10 - 12

TandemRoller® Bearings — TJ, DTJ Series 13 - 15

Technical Data 16 - 17

Typical Applications 18 - 19

Pitchlign® Roller Bearing Interchange Tables 20 - 25

Pitchlign® Application Sheet 26 - 28

Custom Designed Bearings 29

Other RBC Bearings Products Back Cover

1

Min.

.5005

.5630

.6258

.6258

.7509

.7509

.8134

.8759

.8759

.93841.00091.00091.06341.06341.12591.12591.18851.25101.25101.31351.31351.37601.37601.43851.50101.50101.56351.56351.62601.6260

Min.

.99951.06201.12451.12451.24951.24951.31201.37451.37451.43701.49951.49951.56201.56201.62451.62451.68701.74951.74951.81201.81201.87451.87451.93702.06192.06192.12442.12442.18692.1869

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.06

.06

.06

.06

.06

.06

11/163/415/1615/161 1/161 1/161 1/161 3/161 3/161 3/161 5/161 5/161 5/161 5/161 3/81 3/81 7/161 9/161 9/161 9/161 9/161 11/161 11/161 11/161 13/161 13/161 13/161 13/161 15/161 15/16

2,7002,9003,9005,2004,5006,0003,8004,7006,3004,3005,2007,0006,0007,5007,6009,4006,7007,9009,7007,0008,8008,4008,6007,2008,100

11,5007,6009,400

10,00012,400

3,5003,9004,8007.0006,0008,7005,4006,7009,7006,4007,900

11,40010,30013,60013,20017,30011,80014,20018,60013,30017,60015,90017,60014,20016,00023,00015,70020,70019,50025,600

Nominal

1/29/165/85/83/43/413/167/87/815/16111 1/161 1/161 1/81 1/81 3/161 1/41 1/41 5/161 5/161 3/81 3/81 7/161 1/21 1/21 9/161 9/161 5/81 5/8

Max.

1.00001.06251.12501.12501.25001.25001.31251.37501.37501.43751.50001.50001.56251.56251.62501.62501.68751.75001.75001.81251.81251.87501.87501.93752.06252.06252.12502.12502.18752.1875

.750.750.750

1.000.750

1.000.750.750

1.000.750.750

1.0001.0001.2501.0001.2501.0001.0001.2501.0001.2501.0001.2501.0001.0001.2501.0001.2501.0001.250

.110

.117

.109

.137

.112

.152

.140

.125

.169

.152

.151

.190

.235

.280

.212

.229

.262

.242

.310

.290

.350

.250

.315

.315

.317

.400

.342423.342.431

FwInside DiameterBEARING

PARTNUMBER

DOutside Diameter

r1

HousingFilletMax.

Approx.Weight(lbs.)

HousingShoulder

Dia.+/– 1/64"

DynamicCapacityC (lbs.)

StaticCapacityC

O (lbs.)

BWidth+.000–.005

SJ 7113SJ 7123SJ 7133*SJ 7134*SJ 7153*SJ 7154*SJ 7163SJ 7173*SJ 7174*SJ 7183SJ 7193*SJ 7194*SJ 7204SJ 7205SJ 7214*SJ 7215*SJ 7224SJ 7234*SJ 7235*SJ 7244SJ 7245SJ 7254*SJ 7255*SJ 7264SJ 7274*SJ 7275*SJ 7284SJ 7285SJ 7294*SJ 7295*

Precision Ground Heavy Duty Needle Roller Bearings

Fw

r1

D

B

All dimensions in inches.For matching inner rings see page 10The part numbers of matching inner rings are the same as the

corresponding bearing numbers, except the prefixSJ is replaced by the prefix IR

Alternate inner rings with different bores are availablefor several bearings.

Alternate inner rings carry suffix -C or -D.Example: Matching inner rings

for bearing SJ 7315 (1 /34” x 2 5/8” x 1 1/4”):a) IR 7315 (1 7/16”ID x 1 3/4”OD x 1 1/4”W)

orb) IR 7315 C (1 1/2”ID x 1 3/4”OD x 1 1/4”W)

Inner rings must be ordered separately

SJ Pitchlign® Series

Max.

.5014

.5639

.6267

.6267

.7518

.7518

.8143

.8768

.8768

.93931.00181.00181.06431.06431.12681.12681.18941.25191.25191.31441.31441.37691.37691.43941.50191.50191.56441.56441.62691.6269

2

Max.

LimitSpeed(rpm)

.5000

.5625

.6250

.6250

.7500

.7500

.8125

.8750

.8750

.93751.00001.00001.06251.06251.12501.12501.18751.25001.25001.31251.31251.37501.37501.43751.50001.50001.56251.56251.62501.6250

Min.

.4996

.5621

.6246

.6246

.7495

.7495

.8120

.8745

.8745

.9370

.9995

.99951.06201.06201.12451.12451.18691.24941.24941.31191.31191.37441.37441.43691.49941.49941.56191.56191.62441.6244

.4994

.5619

.6244

.6244

.7492

.7492

.8117

.8742

.8742

.9367

.9992

.99921.06171.06171.12421.12421.18651.24901.24901.31151.31151.37401.37401.43651.49901.49901.56151.56151.62401.6240

Max.

.4989

.5614

.6239

.6239

.7487

.7487

.8112

.8737

.8737

.9362

.9987

.99871.06121.06121.12371.12371.18591.24841.24841.31091.31091.37341.37341.43591.49841.49841.56091.56091.62341.6234

Min. Min.

1.00001.06251.12501.12501.25001.25001.31251.37501.37501.43751.50001.50001.56251.56251.62501.62501.68751.75001.75001.81251.81251.87501.87501.93752.06252.06252.12502.12502.18752.1875

1.00081.06331.12581.12581.25101.25101.31351.37601.37601.43851.50101.50101.56351.56351.62601.62601.68851.75101.75101.81351.81351.87601.87601.93852.06372.06372.12622.12622.18872.1887

.0006L

.0006L

.0006L

.0006L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.99891.06141.12391.12391.24871.24871.31121.37371.37371.43621.49871.49871.56121.56121.62371.62371.68621.74871.74871.81121.81121.87371.87371.93622.06102.06102.12352.12352.18602.1860

.99971.06221.12471.12471.24971.24971.31221.37471.37471.43721.49971.49971.56221.56221.62471.62471.68721.74971.74971.81221.81221.87471.87471.93722.06212.06212.12462.12462.18712.1871

.0004T

.0004T

.0004T

.0004T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T.

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

-1

-2-3-4-5-6-7-8-9-10

-11-12-13-14-15-16-17-18-19-20-21-22

-23-24-25

Max. Mean Fit Min. Max. Mean Fit

SJ 7113SJ 7123SJ 7133*SJ 7134*SJ 7153*SJ 7154*SJ 7163SJ 7173*SJ 7174*SJ 7183SJ 7193*SJ 7194*SJ 7204SJ 7205SJ 7214*SJ 7215*SJ 7224SJ 7234*SJ 7235*SJ 7244SJ 7245SJ 7254*SJ 7255*SJ 7264SJ 7274*SJ 7275*SJ 7284SJ 7285SJ 7294*SJ 7295*

BEARINGPART

NUMBER

The bearings meet Military Standard MS 51961.* These bearings have a radius at both ends of the outer ring.All other outer rings are manufactured with a radius at one end and a break corner at the other.

Precision Ground Heavy Duty Needle Roller Bearingswith Inner Rings

For matching inner rings see Page 10

MS51961Suffix

26,00023,00021,00021,00017,00017,00016,00015,00015,00014,00013,00013,00012,00012,00012,00012,00011,00011,00011,00010,00010,00010,00010,0009,0009,0009,0008,5008,5008,0008,000

ISO h6, use withH7 hsg fit

ISO f6, use withN7 hsg fit

Slip Fit ISO H7 Press Fit ISO N7

Recommended Shaft Diameter Recommended Housing Bore

3



corresponding bearing numbers, except that the prefixSJ is replaced by the prefix IR.

Alternate inner rings with different bores are availablefor several bearings.

SJ 7304SJ 7305SJ 7314*SJ 7315*SJ 7324SJ 7325SJ 7334*SJ 7335*SJ 7344SJ 7345SJ 7354*SJ 7355*SJ 8406SJ 8407SJ 8446SJ 8447SJ 8476SJ 8477SJ 8516SJ 8517SJ 8536SJ 8537SJ 9567SJ 9568

FwInside DiameterBEARING

PARTNUMBER Max.

1.68951.68951.75201.75201.81451.81451.87701.87701.93951.93952.00212.00212.25212.25212.50212.50212.75212.75213.00233.00233.12733.12733.25243.2524

Min.

2.24942.24942.31192.31192.37442.37442.43692.43692.49942.49942.56192.56192.99942.99943.24943.24943.49923.49923.74923.74923.99923.99924.24924.2492

DOutside Diameter

r1

HousingFilletMax.

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.10

.10

Approx.Weight(lbs.)

HousingShoulder

Dia.+/– 1/64"

1 15/161 15/162 1/162 1/162 1/162 1/162 3/162 3/162 3/162 3/162 5/162 5/162 5/82 5/82 7/82 7/83 1/83 1/83 3/83 3/83 1/23 1/23 11/163 11/16

7,6009,5009,900

12,4008,000

10,00010,40012,900

8,10010,10010,70013,30015,10017,60015,80018,40016,40019,20017,50020,40017,80020,80023,50026,800

15,90021,10019,70026,10017,30023,10021,50026,60018,10024,10022,50029,90033,20040,50036,40044,50039,60048,40044,20054,10045,80056,00055,10065,500


StaticCapacityC

O (lbs.)

SJ Pitchlign® Series

Alternate inner rings carry the suffix -C or -D.Example: Matching inner rings

for bearing SJ 7355 (2" x 2 9/16" x 1 1/4"):a) IR 7355 D (1 5/8"ID x 2"OD x 1 1/4"W)

orb) IR 7355 (1 11/16"ID x 2"OD x 1 1/4"W)Inner rings must be ordered separately.

Nominal

1 11/161 11/161 3/41 3/41 13/161 13/161 7/81 7/81 15/161 15/16222 1/42 1/42 1/22 1/22 3/42 3/4333 1/83 1/83 1/43 1/4

Min.

1.68851.68851.75101.75101.81351.81351.87601.87601.93851.93852.00112.00112.25112.25112.50112.50112.75112.75113.00113.00113.12613.12613.25123.2512

Max.

2.25002.25002.31252.31252.37502.37502.43752.43752.50002.50002.56252.56253.00003.00003.25003.25003.50003.50003.75003.75004.00004.00004.25004.2500

1.0001.2501.0001.2501.0001.2501.0001.2501.0001.2501.0001.2501.5001.7501.5001.7501.5001.7501.5001.7501.5001.7501.7502.000

BWidth+.000–.005

.37

.46

.36

.46

.40

.49

.38

.48

.42

.53

.40

.511.071.251.181.381.261.471.351.571.401.632.352.69

4

These bearings meet Military Standard MS 51961.* These bearings have a radius at both ends of the outer ring.All other RBC outer rings are manufactured with a radius at one end and a break corner at the other.

LimitSpeed(rpm) Max. Min. Max. Min. Min. Max. Mean Fit Min. Max. Mean Fit

BEARINGPART

NUMBER

SJ 7304SJ 7305SJ 7314*SJ 7315*SJ 7324SJ 7325SJ 7334*SJ 7335*SJ 7344SJ 7345SJ 7354*SJ 7355*SJ 8406SJ 8407SJ 8446SJ 8447SJ 8476SJ 8477SJ 8516SJ 8517SJ 8536SJ 8537SJ 9567SJ 9568

Press Fit ISO N7

Recommended Housing Bore

Slip Fit ISO H7ISO h6, use with

H7 hsg fitISO f6, use with

N7 hsg fit

Recommended Shaft Diameter


MS51961Suffix

For matching inner rings see page 11

7,9007,9007,6007,6007,4007,4007,1007,1006,9006,9006,7006,7005,9005,9005,3005,3004,8004,8004,5004,5004,3004,3004,1004,100

1.68651.68651.74901.74901.81151.81151.87401.87401.93651.93651.99881.99882.24882.24882.49882.49882.74882.74882.99882.99883.12383.12383.24863.2486

1.68591.68591.74841.74841.81091.81091.87341.87341.93591.93591.99811.99812.24812.24812.49812.49812.74812.74812.99812.99813.12313.12313.24773.2477

2.25002.25002.31252.31252.37502.37502.43752.43752.50002.50002.56252.56253.00003.00003.25003.25003.50003.50003.75003.75004.00004.00004.25004.2500

2.25122.25122.31372.31372.37623.37622.43872.43872.50122.50122.56372.56373.00123.00123.25143.25143.50143.50143.75143.75144.00144.00144.25144.2514

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

2.24852.24852.31102.31102.37352.37352.43602.43602.49852.49852.56102.56102.99852.99853.24823.24823.49823.49823.74823.74823.99823.99824.24824.2482

2.24962.24962.31212.31212.37462.37462.43712.43712.49962.49962.56212.56212.99962.99963.24963.24963.49963.49963.74963.74963.99963.99964.24964.2496

-26-27-28

-29

-30-31-32-33-34-35-36-37-38

-39-40

1.68751.68751.75001.75001.81251.81251.87501.87501.93751.93752.00002.00002.25002.25002.50002.50002.75002.75003.00003.00003.12503.12503.25003.2500

1.68691.68691.74941.74941.81191.81191.87441.87441.93691.93691.99931.99932.24932.24932.49932.49932.74932.74932.99932.99933.12433.12433.24913.2491

5


FwInside Diameter

Max.

3.50243.50243.75244.00244.00244.12744.12744.25264.50264.50264.50265.00275.00275.00275.50275.50276.00276.00276.50296.50297.25307.25307.75307.75308.25328.75328.75329.2532

10.2533

SJ 9607SJ 9608SJ 9648SJ 9687SJ 9688SJ 9717SJ 9718SJ 9728SJ 6768SJ 6769SJ 6770SJ 6848SJ 6849SJ 6850SJ 6918SJ 6919SJ 6925SJ 6926SJ 6935SJ 6936SJ 2325SJ 2326SJ 2425SJ 2426SJ 2526SJ 2625SJ 2626SJ 2726SJ 2926

Nominal


corresponding bearing numbers, except that the prefixSJ is replaced by the prefix IR.

Alternate inner rings with different inside diameters are availablefor several bearings.

BEARINGPART

NUMBER

DOutside Diameter

BWidth+.000–.005

r1

HousingFilletMax.

Approx.Weight(lbs.)

2.472.823.002.793.192.843.253.355.406.086.755.916.657.388.009.608.62

10.379.55

11.4813.1115.7514.2017.0518.4116.4519.7521.0723.05

HousingShoulder

Dia.+/– 1/64"

3 15/163 15/164 3/164 7/164 7/164 9/164 9/164 11/165 1/85 1/85 1/85 5/85 5/85 5/86 1/86 1/86 5/86 5/87 1/87 1/88 1/88 1/88 5/88 5/89 1/89 5/89 5/810 1/811 1/8


StaticCapacityC

O (lbs.)

Alternate inner rings carry the suffix -C or -D.Example: Matching inner rings

for bearing SJ 9688 ( 4" x 5" x 2") are:a) IR 9688 D (3 1/4"ID x 4"OD x 2"W)

orb) IR 9688 (3 3/8"ID x 4"OD x 2"W)c) IR 9688 C (3 1/2"ID x 4"OD x 2"W)

Inner rings must be ordered separately.

3 1/23 1/23 3/4444 1/84 1/84 1/44 1/24 1/24 1/25555 1/25 1/2666 1/26 1/27 1/47 1/47 3/47 3/48 1/48 3/48 3/49 1/410 1/4

Min.

3.50123.50123.75124.00124.00124.12624.12624.25124.50124.50124.50125.00135.00135.00135.50135.50136.00136.00136.50136.50137.25147.25147.75147.75148.25148.75148.75149.2514

10.2515

Min.

4.49924.49924.74924.99904.99905.12405.12405.24905.99905.99905.99906.49906.49906.49906.99906.99907.49887.49887.99887.99889.12389.12389.62389.6238

10.123810.623610.623611.123612.1236

Max.

4.50004.50004.75005.00005.00005.12505.12505.25006.00006.00006.00006.50006.50006.50007.00007.00007.50007.50008.00008.00009.12509.12509.62509.6250

10.125010.625010.625011.125012.1250

1.7502.0002.0001.7502.0001.7502.0002.0002.0002.2502.5002.0002.2502.5002.5003.0002.5003.0002.5003.0002.5003.0002.5003.0003.0002.5003.0003.0003.000

24,40027,90027,70025,70029,40026,40030,20030,60037,70042,80047,80040,70046,20051,50053,60064,20055,50066,50058,60070,20064,40078,50067,60082,00085,30072,00087,80090,80096,500

59,60070,90071,30066,90079,60069,30082,40085,20082,90097,600

112,00094,500

111,000128,000139,000175,000150,000189,000166,000209,000162,000209,000175,500225,000241,000199,000257,000273,000305,000

.10

.10

.10

.10

.10

.10

.10

.10

.12

.12

.12

.12

.12

.12

.12

.12

.12

.12

.12

.12

.14

.14

.14

.14

.14

.14

.14

.14

.14

Fw

r1

D

B

6


LimitSpeed(rpm) Max. Min.


Max.

3.49773.49773.74773.99773.99774.12274.12274.24774.49774.49774.49774.99734.99734.99735.49735.49735.99735.99736.49736.49737.24697.24697.74697.74698.24698.74698.74699.2469

10.2465

Min.



4.50004.50004.75005.00005.00005.12505.12505.25006.00006.00006.00006.50006.50006.50007.00007.00007.50007.50008.00008.00009.12509.12509.62509.6250

10.125010.625010.625011.125012.1250

Min.

4.50144.50144.75165.00165.00165.12665.12665.25166.00166.00166.00166.50166.50166.50167.00167.00167.50187.50188.00188.00189.12689.12689.62689.6268

10.127010.627010.627011.127012.1270

Max.

.0011L

.0011L

.0012L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0015L

.0015L

.0015L

.0015L

.0015L

.0015L

.0015L

.0015L

.0016L

.0017L

.0017L

.0017L

.0017L

Mean Fit

Slip Fit ISO H7

4.49824.49824.74804.99804.99805.12305.12305.24805.99805.99805.99806.49806.49806.49806.99806.99807.49767.49767.99767.99769.12269.12269.62269.6226

10.122410.622410.622411.122412.1224

Min.

4.49964.49964.74954.99954.99955.12455.12455.24955.99955.99955.99956.49956.49956.49956.99956.99957.49947.49947.99947.99949.12449.12449.62449.6244

10.124410.624410.624411.124412.1244

Max.

.0007T

.0007T

.0007T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0009T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

.0011T

Mean Fit

Press Fit ISO N7

SJ 9607SJ 9608SJ 9648SJ 9687SJ 9688SJ 9717SJ 9718SJ 9728SJ 6768SJ 6769SJ 6770SJ 6848SJ 6849SJ 6850SJ 6918SJ 6919SJ 6925SJ 6926SJ 6935SJ 6936SJ 2325SJ 2326SJ 2425SJ 2426SJ 2526SJ 2625SJ 2626SJ 2726SJ 2926


BEARINGPART

NUMBER

For matching inner rings see page 12

MS51961Suffix

3.49913.49913.74913.99913.99914.12414.12414.24914.49914.49914.49914.99904.99904.99905.49905.49905.99905.99906.49906.49907.24897.24897.74897.74898.24898.74898.74899.2489

10.2487

3,8003,8003,6003,3003,3003,2003,2003,1003,0003,0003,0002,7002,7002,6802,4002,4002,2002,2002,0002,0001,8001,8001,7001,7001,6001,5001,5001,4001,300

3.49863.49863.74863.99863.99864.12364.12364.24864.49864.49864.49864.99834.99834.99835.49835.49835.99835.99836.49836.49837.24807.24807.74807.74808.24808.74808.74809.2480

10.2478

-41-42-43-44-45

-46-47-48-49-50

-51-52-53-55-56-57-58

-59

3.50003.50003.75004.00004.00004.12504.12504.25004.50004.50004.50005.00005.00005.00005.50005.50006.00006.00006.50006.50007.25007.25007.75007.75008.25008.75008.75009.2500

10.2500

These bearings meet Military Standard MS 51961.

7

8

Precision Ground Heavy Duty Needle Roller Bearingswith Seals

BEARINGPART

NUMBER

5/8 3/4 7/811 1/81 1/41 3/81 1/21 5/81 3/41 7/822 1/42 1/22 3/433 1/43 1/23 3/444 1/8

SJ 7134 SSSJ 7154 SSSJ 7174 SSSJ 7194 SSSJ 7215 SSSJ 7235 SSSJ 7255 SSSJ 7275 SSSJ 7295 SSSJ 7315 SSSJ 7335 SSSJ 7355 SSSJ 8407 SSSJ 8447 SSSJ 8477 SSSJ 8517 SSSJ 9568 SSSJ 9608 SSSJ 9648 SSSJ 9688 SSSJ 9718 SS

Nominal Min.

.6258

.7509

.87591.00091.12591.25101.37601.50101.62601.75101.87602.00112.25112.50112.75113.00113.25123.50123.75124.00124.1262

Max.

.6267

.7518

.87681.00181.12681.25191.37691.50191.62691.75201.87702.00212.25212.50212.75213.00233.25243.50243.75244.00244.1274

Max.

1.12501.25001.37501.50001.62501.75001.87502.06252.18752.31252.43752.56253.00003.25003.50003.75004.25004.50004.75005.00005.1250

Min.

1.12451.24951.37451.49951.62451.74951.87452.06192.18692.31192.43692.56192.99943.24943.49923.74924.24924.49924.74924.99905.1240

DOutside Diameter

FwInside Diameter

BWidth+.000–.005

1.0001.0001.0001.0001.2501.2501.2501.2501.2501.2501.2501.2501.7501.7501.7501.7502.0002.0002.0002.0002.000

r1

HousingFilletMax.

.04

.04

.04

.04

.04

.04

.04

.06

.06

.06

.06

.06

.08

.08

.08

.08

.10

.10

.10

.10

.10

Approx.Weight(lbs.)

.156

.171

.187

.218

.282

.380

.410

.438

.468

.500

.527

.5621.251.381.461.572.692.823.003.193.25

HousingShoulder

Dia.+/– 1/64"

15/161 1/161 3/161 5/161 3/81 9/161 11/161 13/161 15/162 1/162 3/162 1/162 5/82 7/83 1/83 3/83 11/163 15/164 3/164 7/164 9/16


3,2004,5004,7005,2007,6007,9008,4008,100

10,0009,900

10,40010,70015,10015,80016,30017,60023,50024,20025,60026,20026,000

4,0006,0006,7007,900

13,20014,20015,90016,00019,50019,70021,50022,50033,20036,40039,60044,20055,10059,90064,60067,20069,500

StaticCapacityC

O (lbs.)

Example: Suitable inner ringsfor bearing SJ 8447 SS ( 2 1/2" x 3 1/4" x 1 3/4") are:

a) IR 8447 (1 15/16"ID x 2 1/2"OD x 1 3/4"W)or

b) IR 8447 C (2"ID x 2 1/2"OD x 1 3/4"W)or

c) IR 8447 C1 (2 1/8"ID x 2 1/2"OD x 1 3/4"W).Inner rings must be ordered separately.

All dimensions in inches.For matching inner rings see pages 10-12.The numeric portion of a suitable inner ring

part number matches the numeric componentof the bearing. Inner rings with suffix -C or -Ddiffer in inside diameter.

9

Available Seal Configurations

TYPE—RXSingle seal mounted in

chamfered end of ring withsealing lip turned inward to

retain lubricant.Bearing # SJ — RX

.6246

.7495

.8745

.99951.12451.24941.37441.49941.62441.74941.87441.99932.24932.49932.74932.99933.24913.49913.74913.99914.1241

.6244

.7492

.8742

.99921.12421.24901.37401.49901.62401.74901.87401.99882.24882.49882.74882.99883.24863.49863.74863.99864.1236

.6239

.7487

.8737

.99871.12371.24841.37341.49841.62341.74841.87341.99812.24812.49812.74812.99813.24773.49773.74773.99774.1227

.6250

.7500

.87501.00001.12501.25001.37501.50001.62501.75001.87502.00002.25002.50002.75003.00003.25003.50003.75004.00004.1250



6,1005,1004,4003,8003,4003,1002,8002,5002,4002,2002,0001,9001,7001,5001,4001,3001,2001,1001,000

950950

LimitSpeed(rpm)

1.12501.25001.37501.50001.62501.75001.87502.06252.18752.31252.43752.56253.00003.25003.50003.75004.25004.50004.75005.00005.1250

1.12581.25101.37601.50101.62601.75101.87602.06372.18872.31372.43872.56373.00123.25143.50143.75144.25144.50144.75165.00165.1266

.0006L

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0010L

.0011L

.0011L

.0011L

.0011L

.0012L

.0013L

.0013L

1.12391.24871.37371.49871.62371.74871.87372.06102.18602.31102.43602.56102.99853.24823.49823.74824.24824.49824.74804.99805.1230

1.12471.24971.37471.49971.62471.74971.87472.06212.18712.31212.43712.56212.99963.24963.49963.74964.24964.49964.74954.99955.1245

.0004T

.0005T

.0005T

.0005T

.0005T

.0005T

.0005T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0007T

.0007T

.0007T

.0007T

.0008T

.0008T

.0008T

Slip Fit ISO H7 Press Fit ISO N7

SJ 7134 SSSJ 7154 SSSJ 7174 SSSJ 7194 SSSJ 7215 SSSJ 7235 SSSJ 7255 SSSJ 7275 SSSJ 7295 SSSJ 7315 SSSJ 7335 SSSJ 7355 SSSJ 8407 SSSJ 8447 SSSJ 8477 SSSJ 8517 SSSJ 9568 SSSJ 9608 SSSJ 9648 SSSJ 9688 SSSJ 9718 SS

Recommended Shaft Diameter Recommended Housing Bore

TYPE—RSDouble seal with one seal mounted in chamfered

end with sealing lip turned inward to retainlubricant and one seal mounted in radius endwith sealing lip turned outward to exclude dirt.

TYPE—RRDouble seal with sealing lips

turned inward to retain lubricant.Bearing # SJ — RR

TYPE—SRDouble seal with one seal mounted inchamfered end with sealing lip turnedoutward to exclude dirt and one seal

mounted in radius end with sealing lipturned inward to retain lubricant.

Bearing # SJ — SR

TYPE—SSDouble seal with sealing lips

turned outward toexclude dirt.

Bearing # SJ — SS

TYPE—SSingle seal mounted in

radius end of ring with sealinglip turned outward to

exclude dirt.Bearing # SJ — S

TYPE—RSingle seal mounted in

radius end of ring with sealinglip turned inward to retain

lubricant.Bearing # SJ — R

TYPE—SXSingle seal mounted in

chamfered end of ring withsealing lip turned outward to

exclude dirt.Bearing # SJ — SX

Outer rings have a radius on one end and a break corner at the opposite end.

CAUTION1. When assembling shaft against the sealing lip, the shaft end must be chamfered.2. For effective sealing the shaft must have a finish of 20 micro inches maximum.3. These seals are suitable for shaft speeds of 1,000 feet per minute—higher speeds are possible but seal life is shortened.4. This type of seal is suitable for a continuous operating temperature of 250° F. However, they will operate under intermittent temperatures of up to 300° F.5. When ordering, be sure to designate how the seal is to be mounted by using the correct suffix—unless specified otherwise, type "SS" will be shipped.

Max. Min. Max. Min. Min. Max. Mean Fit Min. Max. Mean Fit

BEARINGPART

NUMBER

10

Inner Rings

IR 7133IR 7134IR 7153IR 7154IR 7153 CIR 7154 CIR 7173IR 7174IR 7173 CIR 7193IR 7194IR 7193 CIR 7194 CIR 7204IR 7205IR 7214IR 7215IR 7214 CIR 7215 CIR 7234IR 7235IR 7244IR 7245IR 7254 DIR 7255 DIR 7254IR 7255IR 7274IR 7275IR 7274 CIR 7275 CIR 7284IR 7285IR 7295 D

IR 7295 CIR 7304IR 7305

.3746

.3746

.4996

.4996

.5621

.5621

.6246

.6246

.6871

.7496

.7496

.8120

.8120

.8120

.8120

.8745

.8745

.9370

.9370

.9995

.99951.06201.0620.9995

1.06201.12451.12451.18701.18701.24951.24951.24951.24951.24951.31201.31201.37451.37451.3745

.3750

.3750

.5000

.5000

.5625

.5625

.6250

.6250

.6875

.7500

.7500

.8125

.8125

.8125

.8125

.8750

.8750

.9375

.93751.00001.00001.06251.06251.00001.06251.12501.12501.18751.18751.25001.25001.25001.25001.25001.31251.31251.37501.37501.3750

5/85/83/43/43/43/47/87/87/8

1 1 1 1

1 1/161 1/161 1/81 1/81 1/81 1/81 1/4

1 1/4 1 5/161 5/161 3/81 3/81 3/81 3/81 1/21 1/21 1/21 1/21 9/161 9/161 5/81 5/81 5/81 5/8

1 11/161 11/16

.6245

.6245

.7493

.7493

.7493

.7493

.8743

.8743

.8743

.9993

.9993

.9993

.99931.06181.06181.12411.12411.12411.12411.24911.24911.31161.31161.37411.37411.37411.37411.49901.49901.49901.49901.56151.56151.62401.62401.62401.62401.68651.6865

.6241

.6241

.7488

.7488

.7488

.7488

.8738

.87388738

.9988

.9988

.9988

.99881.06131.06131.12361.12361.12361.12361.24851.24851.31101.31101.37351.37351.37351.37351.49841.49841.49841.49841.56091.56091.62341.62341.62341.62341.68591.6859

.7601.010.760

1.010.760

1.010.760

1.010.760.760

1.010.760

1.0101.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.2601.2601.0101.2601.0101.260

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.04

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.042

.055

.050

.067

.041

.055

.058

.077

.049

.065

.087

.057

.076

.097

.121

.106

.132

.086

.108

.126

.157

.130

.163

.178

.222

.135

.169

.184

.230

.086

.191

.184

.228

.299

.209

.212

.265

.3748

.3748

.4997

.4997

.5622

.5622

.6247

.6247

.6872

.7497

.7497

.8122

.8122

.8122

.8122

.8747

.8747

.9372

.9372

.9997

.99971.06221.0622.9997

1.06221.12471.12471.18711.18711.24961.24961.24961.24961.24961.31211.31211.37461.37461.3746

.3744

.3744

.4993

.4993

.5618

.5618

.6243

.6243

.6868

.7492

.7492

.8117

.8117

.8117

.8117

.8742

.8742

.9367

.9367

.9992

.99921.06171.0617

.99921.06171.12421.12421.18651.18651.24901.24901.24901.24901.24901.31151.31151.37401.37401.3740

.3755

.3755

.5006

.5006

.5631

.5631

.6256

.6256

.6881

.7507

.7507

.8132

.8132

.8132

.8132

.8757

.8757

.9382

.93821.00071.00071.06321.06321.00071.06321.12571.12571.18831.18831.25081.25081.25081.25081.25081.31331.31331.37581.37581.3758

.3752

.3752

.5003

.5003

.5628

.5628

.6253

.6253

.6878

.7503

.7503

.8128

.8128

.8128

.8128

.8753

.8753

.9378

.93781.00031.00031.06281.06281.00031.06281.12531.12531.18791.18791.25041.25041.25041.25041.25041.31291.31291.37541.37541.3754

-1

-2-3

-4

-5

-6-7

-8

-9

-10-11

-12-13

-14-15-16

-18

INNERRINGPART

NUMBER Min. Max.Nominal

1) Max. Min.

dInside Diameter

FOutside Diameter B

Width+.000 -.005

r2

ShaftFilletMax.

Approx.Weight

(lbs) Max.

RECOMMENDED SHAFT DIAMETER

Nominal1) Min. Max. Min.

Slip FitISO g6

Press FitISO m5

3/83/81/21/2

9/169/16

5/85/8

11/163/43/4

13/1613/1613/1613/16

7/87/8

15/1615/16

1 1

1 1/161 1/16

11 1/161 1/81 1/81 3/161 3/161 1/41 1/41 1/41 1/41 1/41 5/161 5/16

1 3/81 3/81 3/8

MS51962suffix

All dimensions in inchesThese inner rings meet Military Standard MS 519621) Sorted by outside diameter.

11

Inner Rings

IR 7315 DIR 7314IR 7315IR 7314 CIR 7315 CIR 7324IR 7325IR 7334IR 7335IR 7344IR 7345IR 7355 D2IR 7355 D1IR 7355DIR 7354IR 7355IR 8406IR 8407IR 8407 C1IR 8446IR 8447IR 8446 CIR 8447 CIR 8447 C1IR 8476IR 8477IR 8476 CIR 8477 CIR 8516IR 8517IR 8516 CIR 8517 CIR 8536IR 8537IR 9567 DIR 9567IR 9568

1.2601.0101.2601.0101.2601.0101.2601.0101.2601.0101.2601.2601.2601.2601.0101.2601.5101.7601.7601.5101.7601.5101.7601.7601.5101.7601.5101.7601.5101.7601.5101.7601.5101.7601.7601.7602.010

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.08

.328

.223

.278

.182

.227

.232

.289

.240

.300

.249

.311

.490

.436

.380

.258

.322

.670

.781

.604

.837

.975

.754

.879

.677

.9311.085

.838

.9761.1261.313

.9221.0741.1781.3731.4341.1711.337

1.37461.43711.43711.49961.49961.49961.49961.56211.56211.62461.62461.49961.56211.62461.68711.68711.74961.74961.87461.93711.93711.99961.99962.12462.18712.18712.24962.24962.37462.37462.49962.49962.49962.49962.62462.74962.7496

1.37401.43651.43651.49901.49901.49901.49901.56151.56151.62401.62401.49901.56151.62401.68651.68651.74901.74901.87401.93651.93651.99891.99892.12392.18642.18642.24892.24892.37392.37392.49892.49892.49892.49892.62392.74892.7489

1.37581.43831.43831.50081.50081.50081.50081.56331.56331.62581.62581.50081.56331.62581.68831.68831.75081.75081.87581.93831.93832.00102.00102.12602.18852.18852.25102.25102.37602.37602.50102.50102.50102.50102.62602.75102.7510

1.37541.43791.43791.50041.50041.50041.50041.56291.56291.62541.62541.50041.56291.62541.68791.68791.75041.75041.87541.93791.93792.00052.00052.12552.18802.18802.25052.25052.37552.37552.50052.50052.50052.50052.62552.75052.7505

-19

-20-21-22

-23

-24-25

-26-27

-28-29

-30-31

-32-33

INNERRINGPART

NUMBER Min. Max.Nominal

1) Max. Min.

dInside Diameter

FOutside Diameter B

Width+.000 -.005

r2

ShaftFilletMax.

Approx.Weight

(lbs) Max.



Slip FitISO g6

Press FitISO m5

1 3/81 7/161 7/161 1/21 1/21 1/21 1/21 9/161 9/161 5/81 5/81 1/21 9/161 5/8

1 11/161 11/161 3/41 3/41 7/8

1 15/161 15/16

2 2

2 1/8 2 3/162 3/162 1/42 1/42 3/82 3/82 1/22 1/22 1/22 1/22 5/82 3/42 3/4

1.37451.43701.43701.49951.49951.49951.49951.56201.56201.62451.62451.49951.56201.62451.68701.68701.74951.74951.87451.93701.93701.99951.99952.12442.18692.18692.24942.24942.37442.37442.49942.49942.49942.49942.62442.74942.7494

1.37501.43751.43751.50001.50001.50001.50001.56251.56251.62501.62501.50001.56251.62501.68751.68751.75001.75001.87501.93751.93752.00002.00002.12502.18752.18752.25002.25002.37502.37502.50002.50002.50002.50002.62502.75002.7500

1 3/41 3/41 3/41 3/41 3/4

1 13/161 13/16

1 7/81 7/8

1 15/161 15/16

2 2 2 2 2

2 1/42 1/42 1/42 1/2

2 1/2 2 1/22 1/22 1/22 3/42 3/42 3/42 3/4

3 3 3 3

3 1/83 1/83 1/43 1/43 1/4

1.74901.74901.74901.74901.74901.81151.81151.87401.87401.93641.93641.99891.99891.99891.99891.99892.24892.24892.24892.49892.49892.49892.49892.49892.74892.74892.74892.74892.99892.99892.99892.99893.12373.12373.24873.24873.2487

1.74841.74841.74841.74841.74841.81091.81091.87341.87341.93571.93571.99821.99821.99821.99821.99822.24822.24822.24822.49822.49822.49822.49822.49822.74822.74822.74822.74822.99822.99822.99822.99823.12283.12283.24783.24783.2478

MS51962suffix


12

Inner Rings

2.93792.93793.00043.12543.12543.25053.37553.25053.37553.50053.50053.50053.50053.75053.75053.75053.87553.75054.00054.00054.00054.25054.50054.50054.75065.00065.00065.50065.50066.00066.00066.50066.50067.00067.50078.0007


.08

.08

.08

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.12

.12

.12

.12

.12

.12

.12

.12

.12

.12

.16

.16

1.411.611.441.671.911.551.792.422.051.661.852.122.58

.1.782.753.092.623.444.004.505.013.475.576.687.026.137.356.688.019.22

11.069.92

11.9012.7313.5714.40

2.93712.93712.99963.12463.12463.24953.37453.24953.37453.49953.49953.49953.49953.74953.74953.74953.87453.74953.99953.99953.99954.24954.49954.49954.74944.99944.99945.49945.49945.99945.99946.49946.49946.99947.49947.9994

2.93642.93642.99893.12393.12393.24873.37373.24873.37373.49873.49873.49873.49873.74873.74873.74873.87373.74873.99873.99873.99874.24874.49874.49874.74874.99854.99855.49855.49855.99855.99856.49856.49856.99857.49837.9983

2.93842.93843.00093.12593.12593.25113.37613.25113.37613.50113.50113.50113.50113.75113.75113.75113.87613.75114.00114.00114.00114.25114.50114.50114.75135.00135.00135.50135.50136.00136.00136.50136.50137.00137.50158.0015

-34

-35-36

-37-38

-39-40

-41

-42

-43-44-45-46-47-48-49

-50

INNERRINGPART

NUMBER Max. Min.

dInside Diameter

FOutside Diameter B

Width+.000 -.005

r2

ShaftFilletMax.

Approx.Weight

(lbs) Max.



Slip FitISO g6

Press FitISO m5

IR 9607IR 9608IR 9608 CIR 9647IR 9648IR 9648 CIR 9687IR 9688 DIR 9688IR 9688 CIR 9717IR 9718IR 9728IR 9728 C1IR 6768IR 6769IR 6769 CIR 6770IR 6848IR 6849IR 6850IR 6849 CIR 6918IR 6919IR 6922IR 6925IR 6926IR 6935IR 6936IR 2325IR 2326IR 2425IR 2426IR 2526IR 2626IR 2726

Min.

2.93692.93692.99943.12443.12443.24943.37423.24943.37423.49923.49923.49923.49923.74923.74923.74923.87423.74923.99923.99923.99924.24924.49924.49924.74834.99904.99905.49905.49905.99905.99906.49906.49906.99907.49887.9988

Max.

3 1/23 1/23 1/23 3/43 3/43 3/4

4 4 4 4

4 1/84 1/84 1/44 1/44 1/24 1/2

4 1/2 4 1/2

5 5 5 5

5 1/25 1/25 3/4

6 6

6 1/26 1/27 1/47 1/47 3/47 3/48 1/48 3/49 1/4

Nominal

1)

2.93752.93753.00003.12503.12503.25003.37503.25003.37503.50003.50003.50003.50003.75003.75003.75003.87503.75004.00004.00004.00004.25004.50004.50004.74925.00005.00005.50005.50006.00006.00006.50006.50007.00007.50008.0000

3.49783.49783.49783.74783.74783.74783.99763.99763.99763.99764.12264.12264.24764.24764.49764.49764.49764.49764.99754.99754.99754.99755.49755.49755.74735.99735.99736.49736.49737.24697.24697.74697.74698.24698.74689.2468

3.49873.49873.49873.74873.74873.74873.99853.99853.99853.99854.12354.12354.24854.24854.49854.49854.49854.49854.99854.99854.99854.99855.49855.49855.74835.99835.99836.49836.49837.24817.24817.74817.74818.24818.74809.2480

1.7602.0102.0101.7602.0102.0101.7602.0102.0102.0101.7602.0102.0102.0102.0102.2602.2602.5152.0102.2602.5152.2602.5153.0153.0152.5153.0152.5153.0152.5153.0152.5153.0153.0153.0153.015

MS51962suffix

2 15/162 15/16

33 1/83 1/83 1/43 3/83 1/43 3/83 1/23 1/23 1/23 1/23 3/43 3/43 3/43 7/83 3/4

4 4 4

4 1/44 1/24 1/24 3/4

5 5

5 1/25 1/2

6 6

6 1/26 1/2

7 7 1/2

8

13

IN SEARCH of MAXIMUM CAPACITYThe RBC TJ TandemRoller® Bearing

What more capacity will do:

Increasing the number of rollers

The Tandem Roller Bearing(TJ-series) solutions.

Full complement of rollers

14

Heavy Duty TJ TandemRoller® Bearings

FwInside Diameter

DOutside Diameter

BWidth+.000–.005

r1

HousingFilletMax.

.015

.015

.015

.040

.040

.040

.015

.015

.060

.060

.060

.060

.060

.060

.080

.080

.080

.080

.080

.080

.060

.060

.060

.060

.060

.060

.060

.060

.100

.100

.100

.100

.100

.100

.100

.100

.120

.120

.160

TJ 75317TJ 7194TJ 74765TJ 7214TJ 7215TJ 7235TJ 75117TJ 75129TJ 75318DTJ 75319TJ 7314TJ7315TJ7354TJ 7355TJ 8446TJ 8447TJ 8476TJ 8477TJ 8516TJ 8517DTJ 75168TJ 75310TJ 75309TJ 9608TJ 75177TJ 75311TJ 75176TJ 75312TJ 6769TJ 6770DTJ 75169TJ 74986TJ 6849TJ 6918TJ 6919DTJ 75170TJ 6926TJ 6935DTJ 75166

Min.

1.49951.49951.68701.62451.62451.74952.06192.24942.37442.37442.31192.31192.56192.56193.24943.24943.49923.49923.74923.74924.24923.99923.99924.49924.37424.81184.62425.31185.99905.99905.99905.99906.49906.99906.99906.99907.49887.9988

10.1236

1.0631.0001.0001.0001.2501.2501.0001.0001.2502.5001.0001.2501.0001.2501.5001.7501.5001.7501.5001.7504.0001.5001.6502.0001.5002.1251.5002.0802.2502.5004.5002.0002.2502.5003.0006.0003.0002.5007.750


1 1/41 5/161 7/161 3/81 3/81 9/161 3/41 7/8222 1/162 1/162 5/162 5/162 7/82 7/83 1/83 1/83 3/83 3/83 3/43 5/83 5/83 7/844 3/84 5/164 7/85 1/45 1/45 1/45 1/25 3/46 1/46 1/46 1/46 5/87 1/89 1/4

HousingShoulder

Dia.+/– 1/64"

10,80013,70013,90015,50020,40022,70017,90018,90024,40048,90023,90031,80027,70036,80046,60056,90049,80060,90056,00068,500

164,50064,40072,60087,90076,000

116,00081,000

127,000119,000137,000236,000135,000137,000169,000213,000425,000239,000200,000830,000

BEARINGPART

NUMBER1)

TJ TandemRoller® Bearing

StaticCapacityC

O (lbs.)

All dimensions in inches.Inquire for sizes not listed.

Nominal

7/811 1/161 1/81 1/81 1/41 3/81 1/21 1/21 1/21 3/41 3/4222 1/22 1/22 3/42 3/4333 1/43 5/163 5/163 1/23 13/1644 1/164 1/24 1/24 1/24 1/2555 1/25 1/25 1/266 1/28

Min.

.87591.00091.06401.12591.12591.25101.37601.50101.50101.50101.75101.75102.00112.00112.50112.50112.75112.75113.00113.00113.25123.31513.31513.50123.81434.00124.06434.50124.50124.50124.50125.00135.00135.50135.50135.50136.00136.50138.0014

Max.

1.50001.50001.68751.62501.62501.75002.06252.25002.37502.37502.31252.31252.56252.56253.25003.25003.50003.50003.75003.75004.25004.00004.00004.50004.37504.81254.62505.31256.00006.00006.00006.00006.50007.00007.00007.00007.50008.0000

10.1250

Max.

.87681.00181.06491.12681.12681.25191.37691.50191.50191.50191.75201.75202.00212.00212.50212.50212.75212.75213.00233.00233.25243.31603.31603.50143.81574.00244.06574.50264.50264.50264.50265.00275.00275.50275.50275.50276.50296.50298.0032

7,3008,0009,5008,500

10,60011,30010,10011,30015,00025,80011,50014,30012,50015,60019,00022,20019,50022,80020,90024,40054,50020,90022,90032,80018,40034,10018,90036,20049,60055,40085,80039,00054,00062,00074,200

127,00079,30067,500

260,000

See pages 10-12 for available inner rings.Inner rings must be ordered separately.1) Prefix DTJ denotes a double row bearing.

15

Heavy Duty TJ TandemRoller® Bearings

LimitSpeed(rpm)

13,00011,80011,00010,50010,5009,4008,5007,8007,8007,1006,7006,7005,9005,9004,7004,7004,3004,3003,9003,9003,3003,5003,5003,3003,1003,0002,9002,6002,6002,6002,3002,4002,4002,1002,1001,9002,0001,8001,350

.87501.00001.06251.12501.12501.25001.37501.50001.50001.50001.75001.75002.00002.00002.50002.50002.75002.75003.00003.00003.25003.31253.31253.50003.81254.00004.06254.50004.50004.50004.50005.00005.00005.50005.50005.50006.00006.50008.0000

.8745

.99951.06201.12451.12451.24941.37441.49941.49941.49941.74941.74941.99931.99932.49932.49932.74932.74932.99932.99933.24913.31163.31163.49913.81163.99914.06164.49914.49914.49914.49914.99904.99905.49905.49905.49905.99906.49907.9989


.8742

.99921.06171.12421.12421.24901.37401.49901.49901.49901.74901.74901.99881.99882.49882.49882.74882.74882.99882.99883.24863.31113.31113.49863.81113.99864.06114.49864.49864.49864.49864.99834.99835.49835.49835.49835.99836.49837.9980



Slip Fit ISO H7


1.49871.49871.68621.62371.62371.74872.06102.24852.37352.37352.31102.31102.56102.56103.24823.24823.49823.49823.74823.74824.24823.99823.99824.49824.37324.81054.62305.31055.99805.99805.99805.99806.49806.99806.99806.99807.49767.9976

10.1224

Press Fit ISO N7

BEARINGPART

NUMBER1)

DTJ Double Row TandemRoller® Bearing

1.50001.50001.68751.62501.62501.75002.06252.25002.37502.37502.31252.31252.56252.56253.25003.25003.50003.50003.75003.75004.25004.00004.00004.50004.37504.81254.62505.31256.00006.00006.00006.00006.50007.00007.00007.00007.50008.0000

10.1250

Min.

.8737

.99871.06121.12371.12371.24841.37341.49841.49841.49841.74841.74841.99811.99812.49812.49812.74812.74812.99812.99813.24773.31023.31023.49773.81023.99774.06024.49774.49774.49774.49774.99734.99735.49735.49735.49735.99736.49737.9969

Min.Max.Min.Max. Max.

1.50101.50101.68851.62601.62601.75102.06372.25122.37622.37622.31372.31372.56372.56373.25143.25143.50143.50143.75143.75144.25144.00144.00144.50144.37644.81414.62665.31416.00166.00166.00166.00166.50167.00167.00167.00167.50188.0018

10.1270

Mean Fit

.0007L

.0007L

.0007L

.0007L

.0007L

.0007L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0009L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0011L

.0012L

.0011L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0013L

.0015L

.0015L

.0017L

Min. Max. Mean Fit

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0006T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0007T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0008T

.0009T

.0009T

.0009T

1.49971.49971.68721.62471.62471.74972.06212.24962.37462.37462.31212.31212.56212.56213.24963.24963.49963.49963.74963.74964.24963.99963.99964.49964.37464.81204.62455.31205.99955.99955.99955.99956.49956.99956.99956.99957.49947.9994

10.1244

TJ 75317TJ 7194

TJ 74765TJ 7214TJ 7215TJ 7235

TJ 75117TJ 75129TJ 75318

DTJ 75319TJ 7314TJ 7315TJ 7354TJ 7355TJ 8446TJ 8447TJ 8476TJ 8477TJ 8516TJ 8517

DTJ 75168TJ 75310TJ 75309TJ 9608

TJ 75177TJ 75311TJ 75176TJ 75312TJ 6769TJ 6770

DTJ 75169TJ 74986TJ 6849TJ 6918TJ 6919

DTJ 75170TJ 6926TJ 6935

DTJ 75166

1) Location and number of lubricatingholes may differ

16

TECHNICAL DATA

1. Introduction

The methods, equations, and technical data presented in this section should be sufficient toselect the correct bearings and estimate their performance for a wide range of applications.For applications with severe or unusual operating conditions, RBC is prepared to provide anin-depth analysis and recommend the most suitable bearing arrangement. Where standardbearings cannot be used, RBC can meet the application requirements with a special bearingdesign, specifically tailored for optimum performance.

2. Capacity and Fatigue Life of Roller Bearings

DYNAMIC CAPACITY C [lbf,N], or “basic load rating” for a roller bearing is that calculated,constant, radial load, which a group of apparently identical bearings with a stationary outerring can theoretically endure for a fatigue life of 106 revolutions of the inner ring.

STATIC CAPACITY CO [lbf,N], or “static load rating” is that uniformly distributed staticradial load, which produces a maximum theoretical contact stress of 4000 MPa (580,000 psi).

FATIGUE LIFE, L10 [rev, hrs], is a statistical measure of the life which 90% of a large groupof apparently identical bearings will complete or exceed. For a single bearing, L10 also refersto the life associated with 90% reliability.Median Life, L50 is usually not more than five times L10.

The relationship between rating life, capacity and load is:

(1)

(2)

The equations are valid in the range of approximately 100 hrs to 100,000 hrs of life. At thelow end, extreme loads or speeds may adversely affect life, at the high end, metal fatigue maynever be a factor in bearing service life.

2.1 Required Bearing Load Capacity

Solving eq.(2) for the dynamic capacity C, we find:

(3)

Use for applications, where a bearing must last a certain number of hours under given loadand speed conditions.Normally, bearings with rigidly mounted outer rings can support static loads up to the staticcapacity without detriment. The static load limit may also be used to evaluate momentaryshock loads in dynamic applications and the maximum load at very slow rotation oroscillation, e.g.:

(4)d is the bearing inside diameter [in])

17

2.2 Adjustments to Bearing Capacity

2.2.1 Raceway Hardness

The capacities given in the dimensional table are valid only if all load carrying bearingcomponents are properly heat treated to a minimum hardness of HRc 58. The equivalentstrength of material is approximately 300,000 psi. In applications without an inner ring, theshaft becomes an integral bearing component.

If one or more bearing components possess a hardness of less than HRc 58, both dynamic andstatic capacities must be reduced by factors given in table 1. A hardness of less than HRc 40is not recommended.

The adjusted bearing capacities C’ and C’O become

Adjusted dynamic capacity: C’ = fHD

* C (5)

Adjusted static capacity: C’O = f

HS * C

O(6)

2.2.2 Operating Temperature

RBC roller bearings without seals and metallic cages are heat stabilized and may be used atoperating temperatures between -40° F (-40°C) and +300° F (150° C) with no loss of capacity.Where applicable, temperature limits of seals, cage, and lubricant must be considered.

Successful operation at higher temperatures requires a different heat treatment, whichreduces hardness proportionally. Alternatively, more temperature resistant bearing mate-rials can be substituted. Consult with RBC Engineering for recommendations and hothardness factors.

Table 1. Capacity reduction factors

2.3 Thrust Capacity of Radial Cylindrical Roller Bearings

Depending on internal design and operating conditions, cylindrical roller bearings cansupport considerable thrust loads, which makes them suitable for use as locating bearings.The main design criterion is the length to diameter ratio of the roller itself. Bearings equippedwith roller lengths more than 2.5 times the diameter are called needle roller bearings andshould not be used to support thrust loads.

The maximum permissible thrust load is given as a percent of the actual radial load appliedand depends on speed and lubrication conditions. It is generally safe to allow a dynamicthrust load equal to 10% of the radial load.

Hardness Hardness Dynamic Static HRc HV fHD fHS

58 655 1.00 1.00 56 617 .88 .99 54 580 .77 .97 52 545 .67 .94 50 513 .59 .90 48 485 .51 .85 46 458 .43 .76 44 435 .37 .68 42 413 .31 .60 40 393 .26 .55

18

ne = ∑(ni * t i

100 ) =

n1 * t 1

100 + n2 * t 2

100 + . . .

Pe = q

Σ(Fiq * n i * t i

ne * 100 )

= q

Fiq * n i * t i

ne * 100 + F2 * n 2 * t 2

n e * 100 + . . .

= q

Fiq * t i 100 +

F2q * t 2

100 + . . .

Pe = q

Σ(Fiq * t i

100 )

2.4 Adjustments to Fatigue Life

If bearing design and operation deviate significantly from normal, it may be necessary to useadditional factors to estimate the fatigue life Lna

Lna = a1 * a2* a3 * L10 (7) where L

na = adjusted rating life [hrs, rev]a

1 = reliability factor (see table 2)

a2 = material factor

a3 = user operating factor

Reliability % Ln Reliability Factor a1

90 L10 195 L5 0.6296 L4 0.5397 L3 0.4498 L2 0.3399 L1 0.21

Table 2. Reliability Factors, a1

The materials and bearing technology factor a2 = 1 for standard bearings. Adjustment factora3takes into account unusual or extreme operating conditions such as shock loads, misalign-ment, and lubrication. RBC rollers are crowned to reduce the danger of roller end loadingand to allow for misalignment of up to 4' (0.0012 in/in). Greater misalignment or momentloading result in stress concentrations, which may reduce the rating life significantly.Consult with RBC for a detailed analysis.

3. Equivalent bearing speed and load

3.1 Mean effective bearing speed

A mean effective bearing speed ne [rpm] must be calculated for bearings subject to variable

loads and speeds within a duty cycle. It is the weighted average of all individual speedcomponents.

(8)

where ni = individual speed [rpm]

ti = time interval in [%] of total time

3.2 Equivalent bearing load

The general equation to compute the equivalent bearing load Pe is:

(9)

In the special case of constant speed this equation reduces to:

(10)

where q = 10/3 for roller bearingsFi = individual radial load [lbf,N]

19

Loading Shock Load Factor

Uniform and constant 1.00Variable and light shock 1.50Vibration and moderate shock 2.00Heavy and severe shock 3.00

If the bearing is subject to repeated shock or impact loads, the equivalent load Pe or itsindividual components should be multiplied by a suitable shock load factor. The productof load and shock load factor should not exceed the bearing static capacity to preventbrinelling of raceways and rollers.

Table 3. Load Modification Factors

4. Limiting Speed

The limiting speed values in the dimensional tables apply to bearings lubricated with oil ofproper viscosity, operating under low to medium load. Poor cooling conditions, bearingmisalignment, and improper diametral bearing clearance will cause the bearing to heat upand reduce the maximum permissible speed. Grease lubricated bearings should not exceed65% of the values given in the tables. The maximum speed of bearings with contacting lipseals is generally limited to a lip surface speed of 1000 ft/min.

5. Shaft & Housing Fits

The dimensional tables list loose and interference fits for inner and outer rings. The correctfit depends on type and severity of the load. To prevent rotation and wear, the ring subjectto rotating loads must be press fitted. This will be the inner ring in most applications. Thering subject to a stationary load may be loosely fitted.

The housing interference fit ISO N7 given in the tables covers most applications with normalloads to 25% of dynamic capacity and light to moderate shock loads. Higher loads, or heavyshock loads, or thin-walled housings may require a tighter interference fit, e.g. ISO P7.

Likewise, loads above 25% of dynamic capacity, or heavy shock loads, or a hollow shaft mayrequire a shaft interference fit per ISO n6. To determine tolererances per P7 or n6, proceedas follows: The nominal housing bore is the maximum bearing outside diameter, the nominalshaft diameter is the maximum inner ring inside diameter. Find the nominal housing borediameter or shaft diameter respectively in table 4 and add the tolerances to the nominaldimension.

Nominal Upper & Lower Nominal Upper & LowerBearing OD Tolerance Inner RingID ToleranceRange[in] ISO P7 Range[in] ISO n6

3/4 - 1 1/8 -.0006 -.0014 1/2 - 11/16 +.0009 +.00051 3/16 - 1 15/16 -.0007 -.0017 3/4 - 1 1/8 +.0011 +.00062 - 3 -.0008 -.0020 1 3/16 - 1 15/16 +.0013 +.00073 1/4 - 4 1/2 -.0009 -.0023 2 - 3 +.0015 +.00084 3/4 - 7 -.0011 -.0027 3 1/4 - 4 1/2 +.0018 +.00097 1/8 - 9 3/4 -.0013 -.0031 4 3/4 - 7 +.0020 +.001110 - 12 3/8 -.0014 -.0035 7 1/8 - 9 3/4 +.0024 +.001212 1/2 - 15 5/8 -.0016 -.0039 10 - 12 3/8 +.0026 +.0013

Table 4. Housing tolerance P7 and shaft tolerance n6

20

Due to lower stiffness, bearing inner and outer rings usually conform to the shape of shaftand housing bore respectively, with little attenuation of taper and out-of-roundness. Thequality of user supplied mounting surfaces must therefore be sufficient for the intendedapplication.

The bearing operating clearance should be checked in cases where both inner and outer ringsare press fitted or where a large temperature gradient exists between shaft and housing.

The user supplied shaft is an integral part of bearings without an inner ring and must meetat least the minimum requirements for rolling element bearings: Surface hardness of HRc58 min, surface finish 16 rms, through hardened or surface hardened 0.030 to 0.050" deep (thisfigure depends on bearing dimensions and load) with sufficient core hardness, roundnessand taper tolerance less than 50 % of the diameter tolerance.

6. Lubrication

Lubricants serve very important purposes in rolling element bearings, they

• protect bearing surfaces from rust and corrosion. • reduce rolling and sliding friction. • prevent metal-to-metal contact between rollers and raceways. • carry heat out of the bearing contact area. • form a barrier (grease) against external contaminants. • remove wear particles from the bearing.

Lack of lubrication or inadequate lubrication is probably the single most common cause ofbearing failure.

6.1 Grease Lubrication

The following check list may be helpful in grease selection:

• Suitability for the expected operating temperature and speed. Select alower NLGI grade for low temperature operation.

•Compatibility with other greases, oils, and rust preventatives. To becompatible, products usually must have the same type oil and thickener.

•Load carrying ability. Some high temperature greases may significantlyreduce bearing load capacity.

•Resistance to water and other contaminants. Balance water repellentproperties against water emulsifying and water soluble properties. Note,a water repellent grease may not be able to protect the bearing surfacesagainst condensation and water, which has breached the grease barrier.

•Required additives for extreme pressure (EP), aging and oxidation resis-tance.

Historically, greases based on different thickeners had distinctly different properties withrespect to operating temperature and behavior towards water. However, modern com-pounding technology has improved on many of the initial limitations and blurred thedistinctions. The most widely used general purpose bearing grease today is a Lithium based,mineral oil type, water emulsifying grease, NLGI grade 2, with EP and other additives.

It takes relatively little lubricant to maintain an adequate lubricating film. In manyapplications, relubrication every 10 - 20,000 hrs would be sufficient for that purpose alone.

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In those cases where the lubricants primary function is to protect the bearing from con-tamination, the relubrication period must be adjusted to maintain a protective barrier at alltimes. There are no fixed rules as to how often relubrication should take place, it isstrictly a function of the environmental conditions. The harsher the operating conditions, theshorter the relubrication period. A visual examination of the bearings may indicate theneed for more grease when much of the grease collar in the seal area has been lost.

The maximum recommended quanitity of grease in a roller bearing is a function of operatingspeed. Pumping a high speed bearing full of grease will cause overheating, possibly greaseloss after melting, and eventual bearing failure due to lack of lubricant. Table 5 provides aguideline for grease fill as a percent of free interior bearing space versus the operating speedn as a percent of limiting speed nL. Visual examination of the bearing for compliance issufficient.

Operating Percent of Grease fillspeed n speed limit nL % of free space

slow n <= 10% nL

100%medium 10% < n < 20% n

L 50%

high n >= 20% nL

10%very high n >= 65% n

L(oil lube required)

Table 5. Recommended grease volume.

6.2 Oil lubrication

The more demanding bearing applications involving high operating speed, high tempera-tures, heat generation, need for minimum friction, etc., usually require oil lubrication.

As with grease, the primary concern when selecting an oil is its suitability for the expectedoperating temperature. If the viscosity at operating temperature is too low, a hydrodynamiclubricating film between rollers and raceways will be too thin to prevent metal to metalcontact and the adjusted bearing life will be less than the theoretical L

10 life. Likewise, good

separation of the bearing components by a thick lubricant film can more than double the L10life.

The minimum oil viscosity at operating temperature should not fall below 12 cSt. Thefollowing equation can be used for a first estimate of the film parameter Ω for needle rollerbearings type SJ:

Λ = 1.6 * 10-4 * (ν*n)0.71 * F1.11 (11)

with ν = viscosity @ operating temperature [cSt]n = bearing speed [rpm]

F = inner raceway diameter [in]

A film parameter Λ > 1 enhances fatigue life, Λ < 1 shortens fatigue life.

In oil sump lubrication systems, the oil level at rest should not cover more than half thediameter of the lowest roller. Bearings subject to heavy loads and speeds may develop somuch heat that a recirculating oil system must be used to remove excess heat. Bearingsoperating near the speed limit or beyond should be lubricated with oil mist.

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TYPICAL APPLICATIONS

Hoist Drum Shaft — The long slender shaft of such anapplication is another point with inherent misalign-ment and deflection. Pitchlign® bearings are indi-cated to maintain its free-rolling, high capacity opera-tions under adverse conditions.

Pumping Units — Center iron and equalizer applica-tions, with oscillating service is best served by Pitchlign®

bearings. With the properly controlled and spacedrollers, creepage of the rollers and cage occur to mini-mize fretting corrosion and friction oxidation.

Sheave Blocks — Crownblocks and traveling blocks ofportable drilling equipmentuse Pitchlign® bearings for easeof assembly, ease of lubrica-tion and compactness com-bined with minimum frictionand dependable service.

Steel Mill Equipment — Pipe handling tables usePitchlign® bearings for maximum capacity, mini-mum friction, compactness, ease of lubrication andmaintenance-free service.

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Machine Tools — One such application is the planet gears and mainshaft bearings of a clutch drive of a mechanical press.Pitchlign® bearings are ideally suited for planet gear applications where centrifugal force and torsional deflection of the planet cageis present. Pitchlign® bearing cages are supported by the integral outer ring flanges, maintaining proper guidance of individualrollers, regardless of the centrifugal force.

Textile Machinery — Calender rolls, where space is aproblem, is another place where the Pitchlign® bearingwith its maximum capacity, minimum size and thrust freeoperation fulfills all requirements. The sealed Pitchlign®

bearing also assures stain-free batts.

Gear Pumps — Higher pressures and speeds of today’sefficient gear pumps, more than ever demand an individu-ally controlled roller design of a bearing such as Pitchlign®.The deflection due to the high internal hydraulic loading,together with the inherent problem of alignment cannot betaken care of by any other type bearing.

Paper Converting Machines — To maintain today’s fabu-lous output of paper converting machinery, Pitchlign®

bearings are used on the eccentrics and main bearings ofpaper punch presses where they withstand speed, heavyimpact and shaft deflection.

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Pitchlign® Aircraft Bearing mounted in a universal joint typedesign of intersecting horizontal and vertical hinges of a helicop-ter. The minimum dimensions and maximum capacity plus thecreepage of the rollers and cage under oscillating service makesthe Pitchlign® bearing an ideal bearing for such applications.

Pitchlign® Aircraft Bearing applied to the horizontal hinge of anearly model helicopter rotor. The shaft, being cantilevered,introduces a severe deflection problem. The Pitchlign® bearing,with its individually controlled rollers prevents skewing andlocking even with the severe end loading present.

Power Transmission — In gear boxes and transmissions ofall types, the Pitchlign® bearing is used due to its maximumcapacity, minimum size and thrust free service. The sealingfeature of the sealed Pitchlign® bearing simplifies design,assembly and inventory of parts.

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RBC BearingsOne Tribology Center102 Willenbrock Rd.Oxford, CT 06978800.390.3300Fax: 609.882.5533

RBC Bearings has been producing bearings in the USA since 1919. In addition to unique custom bearings, RBC offers afull line of standard industrial and aerospace bearings, including:

Spherical Plain Bearings

Radial, angular contact, extended innerring, high misalignment. QuadLube®,ImpactTuff®, SpreadLock® Seal,CrossLube®, DuraLube™, MillTuff™bearings, and self-lubricating bearings.Available in inch and metric sizes.

Self-Lubricating Bearings

Radial, thrust, rod ends, spherical bearings, high temperature, high loads.Available in inch and metric sizes.Fiberglide® self-lubricating bearings.

Airframe Control Bearings

Ball bearing types, self-lubricating types,needle roller track rollers.

Thin Section Ball Bearings

Standard cross sections to one inch.Sizes to 40 inches. Stainless steel andother materials are available. Seals areavailable on all sizes and standard crosssections.

Rod Ends

Commercial and industrial, precision,Mil-Spec series, self-lubricating, andaircraft. Sold under the Heim®, Unibal®,and Spherco® brands. Available in inchand metric sizes.

Ball Bearings

Precision ground, semiground,unground. High loads, long life, smoothoperation. Nice™ ball bearings areoffered in caged and full complementconfigurations.

Cam Followers

Standard stud, heavy stud, yoke type,caged roller followers. Patented RBCRoller® cylindrical roller cam followers,HexLube® universal cam followers, airframe track rollers.

Needle Roller Bearings

Tapered Roller and Thrust Bearings

Pitchlign® caged heavy duty needleroller bearings, inner rings, TJTandemRoller® bearings for long life.

Tyson® case-hardened and through-hardened tapered roller bearings. RBCtapered thrust bearings. Available inmany sizes. Used in Class 8 heavytruck and trailer wheel bearings,gearboxes, and final drive transmissions.

Ball Screws

Precision ground, rolled, ball splines.Long life, low wear, high accuracy.QuickTurn® Ball Screw Repair Service.

Specials

RBC manufactures many specialtybearings for the aerospace, oil andenergy, semiconductor equipment,packaging, heavy truck, and otherindustries.

Innovation. Commitment. Quality.

Authorized RBC Distributor

RBC 6/06

www.rbcbearings.com800.390.3300

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