2014 new catalogue worm gear ball screw jacks,electric ball screw lifting jacks,precision ball screw...

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JTB-SERIES BALL SCREW JACK * JTB-Series Ball Screw Jacks use the same worm gear set arrangement as machine screw jacks. The addition of a high efficiency and high precision ball screw and a ball nut reduces the required input torque to approximately one-third the torque required of the machine screw jacks. * The worm gear driven ball screw jack incorporates a heat treatment standard #45 steel worm which drives a high strength bronze worm gear set and a ball nut. The worm shaft is supported on anti-friction deep groove ball bearings with external seals provided to prevent loss of lubrication. Lubrication with synthetic grease ep2 lithium grease. The bronze worm gear set and a ball nut is supported on anti-friction ball thrust bearings. Rotation of the bronze worm gear and a ball nut causes the lifting ball screw to translate or rotate, depending upon jack configuration. The jack housing is made of ductile iron and proportioned to support the rate capacity of the unit. The lifting ball screw is made of high strength hardened ball bearing steel, This rolling action reduces friction between the ball nut and the lifting ball screw permitting smooth and efficient movement of the load. Because of the greater efficiency and rolling action, the lifting ball screw can operate at higher speeds and higher duty cycle when compared with the machine screw jacks. When a JTB-Series Ball Screw Jacks is motorized, less horsepower is required than an equivalent size machine screw jacks. * JTB-Series Ball Screw Jacks major configuration devides the jacks into translating ball screw jacks, lifting nut rotating ball screw jacks, anti-rotation keyed ball screw jacks (with square tubes), anti-backlash ball screw jacks, double clevis ball screw jacks etc. Upright and inverted type ball jacks. Standard lifting ball screw end types such as top flange (top plate), clevis end (male clevis), threaded end and plain end, also can custom to make kinds of lifting ball screw ends. * JTB-Series Ball Screw Jacks without self-locking, will backdriving after attached loads, and need brake mechanism or locking system for holding the loads. Lifting force from 1 ton to 35 ton. Single lead and high lead ball screw are available. Linear speeds up to 6.75 m/min. Can be driven by motors, hand wheels or both together, 8 sizes in two gear ratios for high and slow linear speeds. Can be mounted in any attitude. Generally maintenance free. * JTB-Series Ball Screw Jacks are used wherever controlled lifting, lowering, pushing and pulling is required. They can be installed single unit, in pairs or multiple units ball screw jack lifting systems simultaneously lifting. Accessories such as electric motors with brake, hand wheels, digital counters, flex couplings, bevel gearboxes, bellow boots, limit switches, drive shafts, pillow blocks, flange blocks, stop nuts, gear motors with brake, worm gear reducer with brake, rod ends etc. JACTON INDUSTRY CO.,LTD TEL: 86-769-81585810, 81585852 SKYPE: jactonjack EMAIL: [email protected] WEB: www.screw-jack.com LIFTING SYSTEMS SOLUTIONS SCREW JACKS MITER GEARBOXES LIFTING SYSTEMS SYSTEMS ACCESSORIES CUSTOM SCREW JACKS CUSTOM ACME SCREWS

Transcript of 2014 new catalogue worm gear ball screw jacks,electric ball screw lifting jacks,precision ball screw...

Page 1: 2014 new catalogue worm gear ball screw jacks,electric ball screw lifting jacks,precision ball screw jacks,high lead ball screw worm gear jacks lift,ball screw shafts mechanical jacks

JTB-SERIES BALL SCREW JACK

* JTB-Series Ball Screw Jacks use the same worm gear set arrangement as machine screw jacks. The addition of a

high efficiency and high precision ball screw and a ball nut reduces the required input torque to approximately

one-third the torque required of the machine screw jacks.

* The worm gear driven ball screw jack incorporates a heat treatment standard #45 steel worm which drives a high

strength bronze worm gear set and a ball nut. The worm shaft is supported on anti-friction deep groove ball bearings

with external seals provided to prevent loss of lubrication. Lubrication with synthetic grease ep2 lithium grease. The

bronze worm gear set and a ball nut is supported on anti-friction ball thrust bearings. Rotation of the bronze worm

gear and a ball nut causes the lifting ball screw to translate or rotate, depending upon jack configuration. The jack

housing is made of ductile iron and proportioned to support the rate capacity of the unit. The lifting ball screw is made

of high strength hardened ball bearing steel, This rolling action reduces friction between the ball nut and the lifting

ball screw permitting smooth and efficient movement of the load. Because of the greater efficiency and rolling action,

the lifting ball screw can operate at higher speeds and higher duty cycle when compared with the machine screw

jacks. When a JTB-Series Ball Screw Jacks is motorized, less horsepower is required than an equivalent size

machine screw jacks.

* JTB-Series Ball Screw Jacks major configuration devides the jacks into translating ball screw jacks, lifting nut

rotating ball screw jacks, anti-rotation keyed ball screw jacks (with square tubes), anti-backlash ball screw jacks,

double clevis ball screw jacks etc. Upright and inverted type ball jacks. Standard lifting ball screw end types such as

top flange (top plate), clevis end (male clevis), threaded end and plain end, also can custom to make kinds of lifting

ball screw ends.

* JTB-Series Ball Screw Jacks without self-locking, will backdriving after attached loads, and need brake mechanism

or locking system for holding the loads. Lifting force from 1 ton to 35 ton. Single lead and high lead ball screw are

available. Linear speeds up to 6.75 m/min. Can be driven by motors, hand wheels or both together, 8 sizes in two

gear ratios for high and slow linear speeds. Can be mounted in any attitude. Generally maintenance free.

* JTB-Series Ball Screw Jacks are used wherever controlled lifting, lowering, pushing and pulling is required. They

can be installed single unit, in pairs or multiple units ball screw jack lifting systems simultaneously lifting. Accessories

such as electric motors with brake, hand wheels, digital counters, flex couplings, bevel gearboxes, bellow boots, limit

switches, drive shafts, pillow blocks, flange blocks, stop nuts, gear motors with brake, worm gear reducer with brake,

rod ends etc.

J A C TO N IN D U S T RY C O. ,LT D TEL: 86-769-81585810, 81585852 SKYPE: jactonjack EMAIL: [email protected] WEB: www.screw-jack.com

L I F T I N G S Y S T E M S S O L U T I O N S

S C R E W J A C K S M I T E R G E A R B O X E S

L I F T I N G S Y S T E M S S Y S T E M S AC C E S S O R I E S

C U S T O M S C R E W J A C K S C U S T O M A C M E S C R E W S

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Page 3: 2014 new catalogue worm gear ball screw jacks,electric ball screw lifting jacks,precision ball screw jacks,high lead ball screw worm gear jacks lift,ball screw shafts mechanical jacks
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Performance Tables

Model JTB-1T JTB-2.5T JTB-5T JTB-10T JTB-15T JTB-20T JTB-25T JTB-35T

Max. lifting force(ton) 1 2.5 5 10 15 20 25 35

Ball screw diam. (mm) 20 25 40 50 50 55 80 16

Ball screw lead (mm) 4 8 10 12 12 12 16 20

Gear ratio (H) 6:1 6:1 6:1 8:1 8:1 8:1 32:3 32:3

Lift screw travel (mm), per turn of input shaft

(H)0.667 1.33 1.67 1.5 1.5 1.5 1.5 1.875

Efficiency % (H) 61 62 64 63 63 62 56 60

Gear ratio (L) 24:1 24:1 24:1 24:1 24:1 24:1 32:1 32:1

Lift screw travel (mm), per turn of input shaft

(L)0.167 0.33 0.417 0.5 0.5 0.5 0.5 0.625

Efficiency % (L) 34 35 39 43 43 41 34 38

Idling torque (N.m) 0.29 0.62 1.4 2.0 2.6 3.9 9.8 19.6

Permissible input torque (N.m)

19.6 49 153.9 292 292 292 635 972

Max. permissible power (kw)

0.54 1.3 2.2 3.6 3.6 5.5 7.9 11.3

Remarks:1. H: high ratio, L: low ratio2. Operating Temperature Range -15~80 degree C, duty cycle within 40% ED and input speed max. 1800rpm.3. Efficiency is under grease lubrication.

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