ILGS Override Worm Gear Operators


Quick Details

Place of Origin:

Zhejiang, China

Brand Name:


Model Number:

ILGS Range

Gearing Arrangement:


Output Torque:

Up to 32,000 Nm


7 available


34:1 to 705:1

Online Customization


Complete range of sandwich manual override quarter-turn gearboxes for spring return pneumatic actuators.

The Rotork Gears Series ILGS gear operators are designed to provide a means of manually overriding pneumatic valve actuators in power and process applications. ILGS are used for spring return actuators only. This design features a 900 slotted key drive and does not utilize a disengagement mechanism.

The Rotork Gears series ILGS operators are used in all industries where reliable manual operation of pneumatic spring return actuators is required. All units mount between the valve and actuator and can be supplied with an ISO drive shaft.


  • Plated input shaft
  • Cast iron housing
  • Rugged construction (ISO 9001)
  • Axial needle bearings
  • IP65
  • Light weight
  • Polyurethane coating
  • Integral top flange and ISO drive
  • Stoke: 0-90º (±50 adjustable)


  • High and low temperature
  • ISO drive coupling
  • IP68 Enclosure
  • Stainless steel input shaft