Screw Jacks

stainless steel screw jacks

Stainless Steel Screw Jacks

Stainless steel screw jacks use stainless steel or bronze material for all exposed surfaces and components; it’s ideal for use in corrosive, wet environments and chemical or food industries.

  • High corrosion resistance and can use underwater.
  • Can customize it to your specification.
  • Upright or inverted, screw translating or nut rotating
  • Screw end options: top plate, clevis, plain end, thread end.
  • Three jack configurations: translating, rotating, and keyed.
  • It can use individually or in multiple arrangements.
As one of the screw jacks manufacturers, suppliers, and exporters of mechanical products, We offer screw jacks and many other products. Please get in touch with us for details.

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Stainless steel screw jacks use stainless steel or bronze material for all exposed surfaces and components; it’s ideal for use in corrosive, wet environments and chemical or food industries.

  • High corrosion resistance and can use underwater.
  • Can customize it to your specification.
  • Upright or inverted, screw translating or nut rotating
  • Screw end options: top plate, clevis, plain end, thread end.
  • Three jack configurations: translating, rotating, and keyed.
  • It can use individually or in multiple arrangements.
  • The housing, shaft, covers, motor flanges, lifting screw, and screw end heads, except the worm gear, are made of stainless steel.

Stainless Steel Jack Specification

Model LMT1T LMT2.5T LMT5T LMT10T LMT15T LMT20T LMT30T LMT50T LMT75T LMT100T
Maximum Load (T) 1T 2.5T 5T 10T 15T 20T 30T 50T 75T 100T
Outer Diameter of screw (mm) 20 26 40 50 55 65 85 120 130 150
 Root Diameter of 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 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 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

Best Materials

Raw materials decide the screw jack’s overall quality. At LiftingMotion, we use the best materials to guarantee the performance & lifetime of the steel jack you purchased.

  • Housing: 304 or 316 stainless steel
  • Worm shaft: 304 or 316 stainless steel
  • Lifting Screw: 304 or 316 stainless steel
  • Shell Cap: 304 or 316 stainless steel, locked into place by set screws
  • Top Plate/Protect Tube: 304 or 316 stainless steel
  • Bearings: Tapered or ball thrust bearings, anti-friction, and provide rugged reliability.
  • Worm gear: ZQAl9-4 or ZCuSn10Pb1, high hardness, excellent wear resistance, not prone to seizure, good casting performance, and cutting performance.

Trusted QC System

Quality is maintained throughout the ball screw lift manufacturing process, from material selection to mass production and packaging.

Our measuring room is equipped with modern three-dimensional measuring machines, ensuring that all our products follow industry standards through various inspections and tests.

Housing Testing Worm Shaft Testing Housing Testing
Worm Shaft Testing Worm Wheel Testing Ball Screw Testing

Professional Production

With over 10 years of professional manufacturing experience, our specialized workers always produce stainless steel jacks with refined craftsmanship and consistent quality.

Whether working on large volume orders or simply 1 set, our standardized production process makes sure you get the same level of high-quality goods at a short lead time.

  • Well-trained Staffs
  • Extensive Manufacturing experience
  • Fully-equipped Production Workshop
  • Well-established manufacturing standard

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