Worm Gear Screw Jacks

Worm Gear Screw Jacks

As one of the screw jack manufacturers, suppliers, and exporters of mechanical products, We offer screw jacks and many other products.

Please get in touch with us for details.

Mail:[email protected]

Manufacturer supplier exporter of the screw jack.

Worm gear screw jacks have load capacities from 1 ton to 100 tons. Extremely precise and reliable, it meets all the necessary safety, cost-effectiveness, and durability requirements of your application. It also makes a perfect replacement for Tsubaki jacks.

◆ Drive mode: electric worm jack motor drive, manual worm jack handwheel drive Trapezoidal spindle, ductile iron bearing housings, and tapered roller bearings provide rugged reliability, high-strength bronze worm gear
◆ Versions: upright or inverted, moving nut or screw translation
◆ Options: Anti-rotation, anti-backlash, safety nut, left-hand thread
◆ Note: 2.5KN small miniature worm jack, made of stainless steel, standard configuration or complete customization is no problem.

Technical Data

Model LMM1T LMM2.5T LMM5T LMM10T LMM15T LMM20T LMM30T LMM50T LMM75T LMM100T
Maximum Load (T) 1T 2.5T 5T 10T 15T 20T 30T 50T 75T 100T
Outer Diameter of the screw (mm) 20 26 40 50 55 65 85 120 130 150
 Root Diameter of the screw (mm) 14.8 19.7 30.5 38.4 43.4 51.3 67 102 112 127
Screw Pitch (mm) 4 5 8 10 10 12 16 16 16 20
Gear Ratio H 5 6 6 8 8 8 10.6 10.6 10.6 12
L 20 24 24 24 24 24 32 32 32 36
Efficiency % H 21 21 22 22 20 20 19 15 13 13
L 12 12 14 15 14 13 11 10 8 8
Permissible max. Power

( KW )

 H 0.49 1 2 2.8 3.1 5 8.4 13.4 14.4 21.4
L 0.36 0.46 0.63 1.4 2.2 3.2 4.6 5.7 7.2 9.4
No-load Torque(N·m) 0.29 0.62 1.4 2 2.6 3.9 9.8 19.6 29.4 39.2
Permissible torque of

input shaft (N·m)*

 19.6 49 153.9 292 292 292 735 1372 1764 2450
Required torque of the input

shaft at max. Load (N.m)

 H 6.2 16.1 48.7 90.7 149 238.1 400.1 856 1380.5 2040.9
L 2.9 7.4 20 45.3 72.3 124 244 453.3 761.3 1278.3
Screw travel length (mm)

per turn of the worm shaft

 H 0.8 0.83 1.33 1.25 1.25 1.5 1.5 1.5 1.5 1.67
L 0.2 0.21 0.33 0.42 0.42 0.5 0.5 0.5 0.5 0.56
Permissible max. Input(rpm)

when max. load

 H 750 600 400 300 200 200 200 150 100 100
L 1200 600 300 300 290 250 180 120 90 70
Screw torque when

max. Load (N·m)

 20.1 65.1 201.5 503.6 813.2 1287.7 2531.9 5551.3 8921.8 13878.3

Application Cases of Worm Drive Screw Jack

As a leading supplier of worm screw jacks, we manage hundreds of cases each year. We offer vast experience in a variety of sectors, such as packaging, transportation manufacturing automation materials handling printing, automotive machines, paper metal, food and beverages, and much more.