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JTB-Series Ball Screw Jacks

The ball screw jacks are born from the experience in trapezoidal screw jacks. The can be employed for lifting, pulling, moving, aligning any kind of load with a perfect synchronism, which is difficult to obtain by means of other handling devices. The ball screw jacks are suitable for high services as well as for a very rapid, quick and precise positioning. As compared to trapezoidal screw jacks, the ball screw jacks presents a transmission reversibility: it is therefore advisable to provide for brakes, blockings or contrast torques in order to avoid a direction reversal. Screw jacks can be applied singularly or in groups properly connected with shafts, joints, and/or bevel gearboxes.

JTB-Series Ball Screw Jacks Key Features
1. With 8 sizes, lifting capacities from 1 ton to 35 ton as Standard
2. Translating and Rotating Screw configurations, Anti-rotation design option.
3. Two Gear ratios and single screw leads as standard. Customized double screw leads.
4. The ball screw jacks can be connected together in systems so that multiple units can be operated and controlled together. 




JTB-Series Ball Screw Jacks Specifications
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 diameter (mm) 20 25 40 50 50 55 80 100
Ball screw lead (mm) 4 8 10 12 12 12 16 20
Gear ratio (H) 1/6 1/6 1/6 1/8 1/8 1/8 3/32 3/32
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) 1/24 1/24 1/24 1/24 1/24 1/24 1/32 1/32
Lift screw travel (mm), per turn of input shaft (L) 0.167 0.33 0.42 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 1.37 1.96 1.96 3.92 9.81 19.6
Permissible input torque (N.m) 19.6 49 153.9 292 292 292 635 972
Max. Permissible input 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 ratio
2. Operating Temperature Range -15~80 degree C, duty cycle within 40% ED and input speed max. 1800rpm.
3. Efficiency is under grease lubrication.