ActionJac MJ-20-UK 5:1

Inch Worm Gear Mini Machine Screw Jack, Upright Keyed, 0.5 Ton Capacity, 5:1 Gear Ratio, Screw Lead 0.25"

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.

To configure a part number, download 2D/3D models, or request a quote, please select the "Quote or Download" tab and click the "Configure" button. (Step 4 of 4)

Product ActionJac MJ-20-UK 5:1
Capacity [Ton] 0.5
Gear Ratio 5:1
Turns of Worm Per Inch Travel 20
Torque to Raise 1 lb. [in-lb] 0.0220
Lifting Screw Diameter [in] 0.50
Screw Lead [in] 0.250
Root Diameter [in] 0.332
Tare Drag Torque [in-lb] -
Performance Specifications
Maximum Allowable Input [hp] 0.33
Maximum Input Torque [in-lb] 19.3
Compression Loading Maximum Travel at 1000 lbs. [lbs] 7.20
Compression Loading Maximum Travel at Any Load [lbs] 8.75
Maximum Worm Speed at Rated Load [rpm] 950
Travel Rate at 1750 rpm [in/min] 90
Maximum Load at 1750 RPM [lb] 600
Starting Torque 2 x Running Torque
Base 0 Travel [lb] 2.5
Per Inch of Travel [lb] 0.20
Grease [lb] 0.5

To continue, please configure your item below.

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