Upright Keyed Features

The lift shaft of a translating style jack must be attached to something which prevents the lift shaft from rotating. If it is not, the lift shaft (and the load) will turn and not translate. A feature can be added to a machine screw jack to prevent lift shaft rotation. This type of jack is referred to as a “keyed jack” and is available in translating models.

Anti-rotation is accomplished by a square guide attached to the screw translating inside a square stem cover attached to the jack. The square stem tube is supplied with lube fittings.

Please choose from the following Upright Keyed categories

Please select a product below to proceed.

Details
Product Capacity [kN] Gear Ratio Raise for One Turn of Worm [mm] Torque to Raise 1 kN [Nm] Lifting Screw Diameter [mm] Screw Lead [mm]
G1-MSJ-UK 2:1
  20.6 2:1 2.50 0.88 24 5
G1-MSJ-UK 3:1
  20.6 3:1 1.60 0.57 24 5
G2-MSJ-UK 2:1
  44.5 2:1 3.50 1.39 40 7
G2-MSJ-UK 3:1
  44.5 3:1 2.30 0.93 40 7
G3-MSJ-UK 2:1
  117 2:1 4.50 2.05 60 9
G3-MSJ-UK 3:1
  117 3:1 3.00 1.36 60 9