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Screw Jacks,Gearboxes,Actuators,Lifting Systems Manufacturers


25 ton Ball Screw Jacks

25 ton Ball Screw Jacks Key Features
1. Maximum static load 25 ton.
2. Ball screw diameter 80mm, lead 16mm. Customized double ball screw leads. Customized ball screw travel length.
3. Translating and Rotating Screw configurations, Anti-rotation (Square nut) design option.
4. High ratio 32:3, Low ratio 32:1.
5. The 25 ton Ball Screw Jacks can be connected together in systems so that multiple units can be operated and controlled together.  
6. Manual operation, Electric driven or both together. 
Without self-locking, brake mechanism and other locking mechanism are necessary for supporting the load.
8. High precision, high duty cycle, high efficiency, high travel speed, long service life, low power required.

25 ton Ball Screw Jacks Drawing Dimensions

Sample Part Number

JTB-25T - US - 300 - H - II - C - PP
25 ton Ball Screw Jacks Specifications
JTB-25T Performance Tables
Max. lifting force (ton) 25
Ball screw diameter (mm) 80
Ball screw lead (mm) 16
Gear ratio (H) 3/32
Lift screw travel (mm), per turn of input shaft (H) 1.5
Efficiency % (H) 56
Gear ratio (L) 1/32
Lift screw travel (mm), per turn of input shaft (L) 0.5
Efficiency % (L) 34
Idling torque (N.m) 9.81
Permissible input torque (N.m) 635
Max. Permissible input power (kw) 7.9

25 ton Ball Screw Jacks Design and Configurations
* US: Upright configurations, translating screw.
* IS: Inverted configurations, translating screw.

UK: Upright configurations, anti-rotation screw.
IK: Inverted configurations, anti-rotation screw.
Note: Keyed screw anti-rotation design by Square tube and square nut design

UR: Upright configurations, rotating screw with lifting nut.
IR: Inverted configurations, rotating screw with lifting nut.
25 ton Ball Screw Jacks Stroke
Example: 300 mm stroke, lifting screw travels 300 mm, then we will make the lifting screw length=stroke+housing height+screw end length. All lifting screws stroke is made following your requirements. Special lifting screws design, please consult us!!
25 ton Ball Screw Jacks Gear Ratios
* H: high gear ratio 3/32, lifting ball screw travels 1.5mm per turn of input shafts revolution.
* L: low gear ratio 1/32, lifting ball screw travels 0.5mm per turn of input shafts revolution.

Customized speical gear ratios, or high lead ball screw, please consult us!!!
25 ton Ball Screw Jacks Lifting Screw End Conditions
Standard lifting ball screw end conditions such as top plate, clevis end, threaded end, plain end. Can make lifting screw ends following your required. Before ordering, please send us your special design drawing of lifting ball screw ends.
25 ton Ball Screw Jacks Input Shaft Types and Motor Flange Types
Input Shaft Types
* A: left side shaft.
* B: right side shaft.
* C: both sides shaft (double input shafts).

Motor Flange Types
* M1: left side shaft and right side motor flange.
* M2: right side motor flange.
* M3: right side shaft and left side motor flange.
* M4: left side motor flange.
25 ton Ball Screw Jacks Accessories
Accessories such as protective tube, bellows boots, 3-phase motor, gear reducer, worm gear reducer, motor flange, hand wheel, bevel gearbox, travel limit switches, flexible coupling, connecting shaft, pillow blocks, flange blocks, screw stop nut, jack travelling nut or lifting nut, rod end bearing, safety nut, swivel plate, and trunnion adaptor etc.