ISN - Multi-Turn Spur

Rotork Gears Series ISN multi-turn spur gearboxes.

A range of nuclear safety related heavy-duty cast and ductile iron multi-turn spur gearboxes suited for the most demanding linear valve applications as an alternative to the IBN gearboxes where higher torque and thrusts and larger stem acceptance is required.

The ISN gearbox range comprises:

  • 3 sizes
  • Ratios of 6:1 to 24:1
  • Torque range up to 43,386 Nm (32,000 lbsft) and a thrust range up to 2,224 KN (500,000 lbs)

See ISN Literature Page for further details.

ISN Nuclear Multi-Turn Spur Gearbox