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STAINLESS STEEL MACHINE SCREW
WORM GEAR SCREW JACK

COMPARE Screw Jacks: to see a side-by-side jack comparison check the box in front of the jack model then click compare to build your customized chart. To view a specific jack click on the screw jack model link.

SORT Screw Jacks by a category: to sort by Capacity, Screw Diameter, Lead, Root Diameter, Gear Ratio, Raise for One Turn of Worm, Max Input Torque, Max Allowable Input, Max Load at 1425 RPM or Torque to Raise 1 kN.
Compare STAINLESS STEEL inch MACHINE SCREW WORM GEAR SCREW JACKS
MODEL GEAR
RATIO

CAPACITY
(Tons)

LIFTING
SCREW
DIA.
(in.)
SCREW
LEAD
(in.)
ROOT
DIA.
(in.)
TURNS
OF WORM
FOR 1"
TRAVEL
MAX INPUT
TORQUE
(in.-lb.)
MAX
ALLOW.
INPUT
(HP)
MAX WORM
SPEED AT
RATED LOAD
MAX LOAD
AT 1750
RPM
TORQUE
TO RAISE
1 LB.
(in.-lb.)
PDF
PAGE
2SS-MSJ   6:1 6:1 0.66 1 0.25 0.698 24 33 2 1800 1330 0.25 337
2SS-MSJ   24:1 24:1 0.66 1 0.25 0.698 96 14 0.5 1800 1320 0.015 337
5SS-MSJ   6:1 6:1 1.67 1.5 0.375 1.066 16 125 3 1510 2873 0.0376 338
5SS-MSJ   24:1 24:1 1.67 1.5 0.375 1.066 64 48 0.75 985 1875 0.0144 338
10SS-MSJ   8:1 8:1 3.33 2 0.5 1.41 16 251 5 1255 4775 0.0377 339
10SS-MSJ   24:1 24:1 3.33 2 0.5 1.41 48 128 1.5 739 2813 0.0192 339
15SS-MSJ   8:1 8:1 5 2.25 0.5 1.684 16 407 5 774 4424 0.0407 340
15SS-MSJ   24:1 24:1 5 2.25 0.5 1.684 48 218 1.5 434 2475 0.0218 340
20SS-MSJ   8:1 8:1 6.66 2.5 0.5 1.908 16 580 7.5 540 4140 0.0435 341
20SS-MSJ   24:1 24:1 6.66 2.5 0.5 1.908 48 291 2.5 325 2478 0.0218 341
25SS-MSJ   10.66:1 10.66:1 8.3 3 0.667 2.652 16 903 11 768 8764 0.0452 342
25SS-MSJ   32:1 32:1 8.3 3 0.667 2.652 48 471 3.5 468 5364 0.0235 342
35SS-MSJ   10.66:1 10.66:1 11.66 3.75 0.667 3.083 16 1150 11 603 8035 0.0493 343
35SS-MSJ   32:1 32:1 11.66 3.75 0.667 3.083 48 600 3.5 368 5022 0.0251 343