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Rotork HOW/MPR Series Hand Operated Worm Gearbox

Brand: Rotork PLC

Designed to suit manual applications, the HOW/MPR worm gear operators are quarter-turn devices intended for the operation of ball, plug and butterfly valves.

The HOW/MPR gear operators include low lead angle gearing designed to be inherently self-locking.

Torque range from 39,000 Nm (28,765 lbf.ft) to 264,000 Nm (194,716 lbf.ft). 9 sizes. Ratios from 1229:1 to 7171:1.
Features
  • Carefully chosen ratios to meet manual rim effort requirements
  • Protected steel input shaft
  • Removable output sleeve
  • Ductile iron gearcase
  • Angular contact bearings supporting worm shaft
  • Repositionable baseplate facility
  • Options:
    • High and low temperatures
    • Stainless steel input shaft
    • All types of environment
    • Limit switches
    • Fixed and flexible extensions
    • Chain wheels

Specifications

Brand

Operating Temperature

  • -40° to 250° F (-40° to 120° C)

Environmental Protection

  • IP67
  • IP68

Shaft Material

  • Input Shaft: Protected Steel
  • Worm Shaft: Steel

Flange Material

  • SG Iron

Seal Material

  • Nitrile Rubber

Gearcase Material

  • Ductile Iron

Material of Construction

  • Baseplate: SG Iron / Cast Iron
  • Fasteners: Protected Steel
  • Output Sleeve, Position Indicator: Steel
  • Quadrant: SG Iron
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