Upright Keyed Features

Upright Translating Keyed Machine Screw Jacks - 1/4 Ton to 75 Ton

A Keyed Machine Screw Jack has a keyway machined along the length of the lifting screw. A matching key is fastened to the cover of the jack which will eliminate lift shaft rotation. The keyway in the screw causes greater than normal wear on the internal drive sleeve threads, somewhat reducing jack life.

A Uprighted translating jack has a lifting shaft that moves through the gear box. The lift shaft extends out from the top of the worm screw jack. A nut is integrated with the worm gear such that the worm gear and nut rotate together. When the lift shaft is held to prevent rotation, the lift shaft will move linearly through the gear box to move the load.

Depending on size, Upright Translating Keyed designs are available with optional accessories such as boots, motor mounts, right-angle reducers, motors, encoders and rotary limit switches.

Please choose from the following Upright Keyed categories

Please select a product below to proceed.

Details Performance Specifications
Product Capacity [Ton] Gear Ratio Turns of Worm per Inch Travel Torque to Raise 1 lb. [in-lb] Lifting Screw Diameter [in] Screw Lead [in] Maximum Allowable Input [hp] Maximum Input Torque [in-lb] Maximum Worm Speed at Rated Load [rpm] Maximum Load at 1750 RPM [lb]
ActionJac MJ-20-UK 5:1
  0.5 5:1 20 0.0220 0.50 0.250 0.33 19.3 950 600
ActionJac MJ-25-UK 5:1
  0.5 5:1 25 0.0240 0.63 0.200 0.33 20.7 900 560
ActionJac MJ-40-UK 5:1
  0.5 5:1 40 0.0200 0.63 0.125 0.33 16.7 1100 700
ActionJac MJ-50-UK 5:1
  0.5 5:1 50 0.0160 0.50 0.100 0.33 13.5 1350 860
ActionJac MJ-80-UK 20:1
  0.5 20:1 80 0.0090 0.50 0.250 0.17 8 1140 720
ActionJac MJ-100-UK 20:1
  0.5 20:1 100 0.0100 0.63 0.200 0.17 8.7 1050 670
ActionJac MJ-160-UK 20:1
  0.5 20:1 160 0.0080 0.63 0.125 0.17 7 1300 830
ActionJac MJ-200-UK 20:1
  0.5 20:1 200 0.0070 0.50 0.100 0.17 5.7 1560 1000
ActionJac 1-MSJ-UK 5:1
  1 5:1 25 0.0259 0.75 0.200 0.50 45 608 695
ActionJac 1-MSJ-UK 20:1
  1 20:1 100 0.0121 0.75 0.200 0.25 21 651 744
ActionJac 2-MSJ-UK 6:1
  2 6:1 24 0.0288 1.00 0.250 2.00 100 1096 2505
ActionJac 2-MSJ-UK 12:1
  2 12:1 48 0.0177 1.00 0.250 1.50 62 1326 3031
ActionJac 2-MSJ-UK 24:1
  2 24:1 96 0.0121 1.00 0.250 0.50 42 651 1488
ActionJac 2R-MSJ-UK 6:1
  2 6:1 24 0.0288 1.00 0.250 2.00 100 1096 2505
ActionJac 2R-MSJ-UK 12:1
  2 12:1 48 0.0177 1.00 0.250 1.50 62 1326 3031
ActionJac 2R-MSJ-UK 24:1
  2 24:1 96 0.0121 1.00 0.250 0.50 42 651 1488
ActionJac 2.5-MSJ-UK 6:1
  2.5 6:1 24 0.0290 1.00 0.250 2.00 126 869 2483
ActionJac 2.5-MSJ-UK 12:1
  2.5 12:1 48 0.0170 1.00 0.250 1.50 74 1110 3174
ActionJac 2.5-MSJ-UK 24:1
  2.5 24:1 96 0.0122 1.00 0.250 0.50 53 516 1476
ActionJac 5-MSJ-UK 6:1
  5 6:1 16 0.0432 1.50 0.375 3.00 376 437 2501
ActionJac 5-MSJ-UK 24:1
  5 24:1 64 0.0166 1.50 0.375 0.75 144 287 1627
ActionJac 10-MSJ-UK 8:1
  10 8:1 16 0.0434 2.00 0.500 5.00 753 363 4149
ActionJac 10-MSJ-UK 24:1
  10 24:1 48 0.0221 2.00 0.500 1.50 384 214 2444
ActionJac 15-MSJ-UK 8:1
  15 8:1 16 0.0468 2.25 0.500 5.00 1221 224 3847
ActionJac 15-MSJ-UK 24:1
  15 24:1 48 0.0251 2.25 0.500 1.50 654 125 2152
ActionJac 20-MSJ-UK 8:1
  20 8:1 16 0.0500 2.50 0.500 7.50 1740 236 5402
ActionJac 20-MSJ-UK 24:1
  20 24:1 48 0.0251 2.50 0.500 2.50 873 157 3587
ActionJac 30-MSJ-UK 10 2/3:1
  30 10 2/3:1 16 0.0520 3.38 0.667 11.00 2710 222 7618
ActionJac 30-MSJ-UK 32:1
  30 32:1 48 0.0270 3.38 0.667 3.50 1411 136 4668
ActionJac 35-MSJ-UK 10 2/3:1
  35 10 2/3:1 16 0.0570 3.75 0.667 11.00 3450 174 6950
ActionJac 35-MSJ-UK 32:1
  35 32:1 48 0.0295 3.75 0.667 3.50 1800 107 4273
ActionJac 50-MSJ-UK 10 2/3:1
  50 10 2/3:1 16 0.0638 4.50 0.667 16.00 5555 158 9032
ActionJac 50-MSJ-UK 32:1
  50 32:1 48 0.0346 4.50 0.667 5.00 3014 104 5204
ActionJac 75-MSJ-UK 10 2/3:1
  75 10 2/3:1 16 0.0631 5.00 0.667 28.00 8236 186 15950
ActionJac 75-MSJ-UK 32:1
  75 32:1 48 0.0290 5.00 0.667 9.00 3780 130 11180