Post on 18-Dec-2021
-7471 -7481
Precision Ball Screws Standard Nut - Shaft Dia. 20; Lead 5, 10, 20Accuracy Grade C5
NutType Type Accuracy
GradeShaft Dia. Lead
Screw Shaft NutMMaterial HHardness MMaterial HHardness
Standard Nut C-BSS C5 20 5, 10, 20 S55C Induction Hardened58~62HRC SCM415 Carburized
58~62HRC
Nut Type Accuracy Grade
Part Number 1mm Increment Y Ball Dia. Ball Center Dia.
Screw Root Dia.
Number of Circuits
Basic Load Rating Axial Play
Preload Torque N • cm
Twisting DirectionType Screw Shaft O.D. Lead L C (Dynamic) kN Co (Static) kN
Standard Nut C5 C-BSS 20
05 200~1000 L-92
3.175
21.08 (17.905) 3.8 turns, 1 row
7.1 14.5
0.015 or Less
3.0 or Less
Right10250~1500 L-95 20.75 (17.575)
9.5 17.64.0 or Less
20 1.8 turns, 1 row 6.4 11.3
kgf=Nx0.101972
-0.
009
Ø36-
0.02
5
-0.
004
Ø15 -
0.01
2
0
Ø12 -
0.01
1
0
Ø1
4.3 -
0.11
0 17-0.25
+0.110.15
+0.141.15
Arrow View X-X
Ø47
Ø20
Ø20 -0.
003
Ø15-
0.01
1
104757
58
44
45°22.5°
12 Y (Nut Motion Range) 63 2015
85
10
C0.5C0.5C0.5C0.5
C0.5
R0.3
or l
essR0.3 or less
M15x1.0
M6x1.0 (Oil Inlet)
6-Ø6.6 Through
X
X
L
0
0
C-BSS2020
1050
6058
44
45°22.5°
Ø47Ø20
Ø20
12 Y (Nut Motion Range) 63 20
15
85
10
C0.5C0.5C0.5C0.5
C0.5
R0.3
or l
essR0.3 or less
M15x1.0
M6x1.0 (Oil Inlet)
6-Ø6.6 Through
0
Ø1
4.3 -
0.11
-0.
009
Ø36 -
0.02
5
-0.
003
Ø15-
0.01
1
0
Ø1
2-0.
011
+0.141.15 0
+0.110.15
Arrow View X-X
X -0.
004
Ø15 -
0.01
2
0 17-0.25
X
L
0
C-BSS2010
103040
58
44
45°
Ø47
22.5°
12 Y (Nut Motion Range) 60 205 5 10
Ø 20
15
Ø20
C0.5
M15x1.0
M6x1.0 (Oil Inlet)
6-Ø6.6 Through
R0.3 or less
-0.
004
Ø15 -
0.01
2
0
Ø1
4.3 -
0.11
R0.3
or l
ess
C0.5C0.5
C0.5
C0.5 -
0.00
3Ø1
5-0.
011
0 17-0.25
-0.
009
Ø36 -
0.02
5
+0.141.15 0
+0.110.15
0
Ø1
2-0.
011
X
X
L
0
Arrow View X-X
C-BSS2005
Points of comparisonbetween similar products
C-VALUE parts' load rating, axial clearance and nut dimensions are different from similar parts. (For details, see P.677~ P.679)When considering C-VALUE parts, choose by comparing the specifications against similar parts.
Part Number - L - (FC, KC•••etc.)
C-BSS2010 - 365 - KC10
Alterations Code Spec.No Machining on Support Side Shaft End
NCNo machining added on the support side shaft end.
Ordering Code NC
Ball Nut Orientation Reversed
RLCChanges the nut direction.Ordering Code RLC
No Retaining Ring Grooveon Support Side Shaft End
RNC
Retaining ring groove is not machined on the support side shaft end.
Ordering Code RNCECombination with FC is not available.
Change Support Side Shaft End Length
FC
Changes the length of the support side shaft end.FC=1mm IncrementOrdering Code FC20E13≤FC≤30EY dimension is shortened.
Change Support Side Shaft End Machining
GC
Changes the machining on the support side.Q is selectable from 10, 12, 15.G=1mm Increment EY dimension is shortened.Ordering Code GC-Q10-G20E5≤G≤Qx3
Alterations Code Spec.Tapped Hole on Support Side Shaft End
MC
Adds a tapped hole on the support side shaft end.MC=1mm IncrementOrdering Code MC25
M lM6x1.0 15
E21≤MC≤30
Keyway on Fixed Side Shaft EndDetailed Keyway Dimensions DP.684
KC
Adds a keyway on the fixed side shaft end.KC=1mm IncrementOrdering Code KC15E4≤KC≤19
Keyway on Fixed Side Shaft End
KLC
Adds a keyway at a customer specified area on the fixed side shaft end. (Keyway dim. is same as KC.)K, S=1mm IncrementOrdering Code KLC-K7-S2E5≤K+S≤19
Flat Machined on Fixed Side Shaft End
SC
Adds a flat on the fixed side shaft end.SC=1mm IncrementOrdering Code SC7E5≤SC≤19
2 Flats Machined on Fixed Side Shaft End
SWCSGC
Adds two flats on the fixed side shaft end.SWC: 90° Position SGC: 120° Position1mm IncrementOrdering Code SWC20E5≤SWC, SGC≤19
E�Y dimension is shortened.
SWC SGC
0.5
SWC, SGC 0.5 0.5
0.5
Qh7
G
L
(Fixed Side)(Support Side)
Revised
Std.
FC
10.15
MC
10.15l
M
KC
SK
0.5SC
Part Number - L
C-BSS2005 - 820
Nut Type Accuracy Grade Part Number
Unit Price 1 ~ 4 pc(s).L200~400 L401~600 L601~800 L801~1000 L1001~1200 L1201~1500
StandardNut C5
C-BSS2005 - -C-BSS2010C-BSS2020
Similar parts listed pageDP.745, 746
<Do not take a nut off><Do not let a nut overrun>QNotesEFilled with lithium soap based grease (Alvania Grease S2 made by Showa Shell Sekiyu K.K).EFor accuracy of Ball Screws, see P.2223 and P.2224.EFor details of Support Units, see P.753 ~ P.778.ECautions: Do not let the nuts overrun or remove the nuts from the screw shafts.
It may cause the balls to fall out or damage the ball recirculation parts.EDo not tilt the ball screw assembly since the nut may spin off from the shaft due to its own weight.EUse one of the support unit accessory collars on the fastening nut side.
QCombination with Support Units
EOther than the part numbers shown above, a wide variety of Support Units are also available. (P.761~P.778)
Ball Screw Part Number Recommended Support Unit
Type Screw Shaft O.D. Lead Part Number Shape Fixed
SideSupport
Side PageType No.
C-BSS 20051020
C-BRW
15Round g P.767
C-BUR g P.768C-BSW
Square g P.763C-BUN g P.762
Support Units Support Side
Support Units Fixed Side
QPeripherals: Combination of the following parts is available.
Support Units (Square) Support Units (Round)
Note that, for some of the types shown here, order might be unable to be received by the MISUMI Indonesia offices.