Line Shafting Features

ActionJac™ LinkJac™ Line Shafting is used to interconnect the input shafts of ActionJac™ Worm Gear Screw Jacks used in a multiple arrangement. The shafts transfer the torque from the motor to the jack or from jack to jack. LinkJac™ is available in either steel Line Shafting available in standard lengths up to 144", or in aluminum Tubular Shafting with bonded journals of stainless steel available in lengths up to 196". Custom end machining and other diameters are available. Contact Nook Industries for information.


There are two major concerns when selecting interconnect shaft:

  • Critical Speed: How fast will the shaft be turning?
  • Torsional Twist: How much torque will the shafts be transmitting?

The two characteristics of a LinkJac™ Line Shaft or Tubular Shafting which can be varied to accommodate these requirements are:

  • Length of the shaft
  • Diameter of the shaft

When selecting a LinkJac™ Line Shaft or Tubular Shafting, use the largest diameter or shortest length which satisfies both equations.

Please choose from the following Line Shafting categories

Please select a product below to proceed.

Dimensions Product Info
Product OD - Outside Diameter Keyway Keyway Length Material Weight [lb/in]
ActionJac LinkJac LJK-8
  0.5 1/8 x 1/16 Full Length Steel 0.056
ActionJac LinkJac LJK-12
  0.75 3/16 x 3/32 Full Length Steel 0.125
ActionJac LinkJac LJK-16
  1 1/4 x 1/8 Full Length Steel 0.223
ActionJac LinkJac LJK-24
  1.5 3/8 x 3/16 Full Length Steel 0.502

Dimensions Product Info
Product OD - Outside Diameter Material Weight [lb/in]
ActionJac LinkJac LJ-8
  0.5 Steel 0.056
ActionJac LinkJac LJ-12
  0.75 Steel 0.125
ActionJac LinkJac LJ-16
  1 Steel 0.223
ActionJac LinkJac LJ-24
  1.5 Steel 0.502

Product Info Dimensions
Product Keyway [mm] Keyway Length [mm] Material Weight [lb/in] OD - Outside Diameter [in] OD - Outside Diameter [mm] International Tolerance Grade for B
ActionJac LinkJac LJT-27
  5 x 2.5 28 Aluminium 0.035 1.06 27 H7
ActionJac LinkJac LJT-40
  6 x 3 40 Aluminium 0.055 1.57 40 H7
ActionJac LinkJac LJT-50
  6 x 3 50 Aluminium 0.069 1.99 50 H7
ActionJac LinkJac LJT-60
  8 x 3.5 50 Aluminium 0.084 2.36 60 H7