ActionJac 1-BSJ-DC 5:1

Inch Worm Gear Ball Screw Jack, Double Clevis, 1 Ton Capacity, 5:1 Gear Ratio, Screw Lead 0.2"

Double Clevis Jacks are used when it is necessary to move a load through an arc, such as tracking antennas, hinged doors or air dampers. One clevis is mounted on the end of the lift shaft and the other clevis is welded to a heavy duty stem cover, which is welded to the housing. Depending on size, Double clevis designs are available with optional accessories such as boots, motor mounts, right-angle reducers, motors, encoders and rotary limit switches.


Mounting hardware for double clevis jacks should be specified as heat treated alloy steel clevis pins with at least 100,000 psi ultimate tensile strength.

Double clevis jacks used horizontally will have reduced column strength and life. For most horizontal applications, Nook recommends the use of an Electric Cylinder (contact Nook Engineering for more information).

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 1-BSJ-DC 5:1
Capacity [Ton] 1
Gear Ratio 5:1
Turns of Worm per Inch Travel 25
Torque to Raise 1 lb. [in-lb] 0.0095
Torque to Raise 1 lb. Keyed [in-lb] 0.0104
Lifting Screw Diameter [in] 0.75
Screw Lead [in] 0.200
Root Diameter [in] 0.602
BackDrive Holding Torque [ft-lb] 1.5
Tare Drag Torque [in-lb] 3
Performance Specifications
Maximum Allowable Input [hp] 0.50
Maximum Input Torque [in-lb] 19
Maximum Worm Speed at Rated Load Non-keyed [rpm] 1660
Maximum Worm Speed at Rated Load Keyed [rpm] 1515
Maximum Load at 1750 RPM Non-keyed [lb] 1895
Maximum Load at 1750 RPM Keyed [lb] 1731
Starting Torque 1.5 x Running Torque
Base 0 Travel [lb] 8
Per Inch of Travel [lb] 0.04
Grease [lb] 0.5

To continue, please configure your item below.

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