The MO-D series are rugged, industrial grade manual overrides, manufactured with a cast iron housing. All models in this series feature high performance bearings and a polyurethane coated finish.

The PRO-GEAR MO-D series is designed to provide a manual operation of 90° for shut-off valves which are equiped with a pneumatic- or hydraulic actuator. The MO-D series is providing a declutchable design for use in all industries where a reliable operation of both double acting and spring return pneumatic actuators, as well as hydraulic actuators is required. All units which are to be mounted between the valve and actuator will be be supplied with a (interchangeable) actuator mounting flange for flexible usage. Furthermore, all units can be supplied with the ISO drive shaft which is connecting the actuator with the valve. Optionally, a 3/2 relief valve can be fitted on the housing in order to automaticly evacuate air pressure from the actuator while engaging the manual override.

Download our datasheets:

pdf-file Gearbox type: MO-D 150

pdf-file Gearbox type: MO-D 350

pdf-file Gearbox type: MO-D 700

pdf-file Gearbox type: MO-D 1600

pdf-file Gearbox type: MO-D 3000

pdf-file Gearbox type: MO-D 5000



  • Stainless Steel inputshaft
  • Stainless Steel fasteners
  • Standardised according DIN / ISO 5211
  • 5 Models up top 5.000 Nm. Output torque
  • Axial needle bearings
  • NBR 70 gasket material
  • Sealed coupling by NBR O-ring
  • Polyurethane coated finish
  • Inset bush system for flexibility and reduced lead times (interchangeable with Q-series & X-series gearboxes)
  • Blind tapped PCD's

  • 6 Models
  • Up to 5.000 Nm. Torque range
  • - 5° to 95° stroke
  • IP68 sealing
  • -25 °C to +110 °C (-13 °F to +230 °F) temperature range