Rotork launches rugged new gearbox for motorised quarter-turn applications

Rotork's rugged new gearbox, the AB550M, has been designed for use with motorised quarter-turn valves and dampers in chemical, power, waterworks, HVAC and most general other industrial applications.

The latest addition to the market-leading range of gearboxes manufactured by Rotork Gears is a rugged, industrial grade product designed for use with motorised quarter-turn valves and dampers.

The new AB550M gearbox is manufactured as standard with cast iron housing components, high performance axial thrust bearings, a protected steel input shaft and a polyurethane coating to deal with arduous applications and aggressive environments.

The ability to support electric actuators weighing up to 46 kilograms, and input speeds of up to 72 rpm, offers suitability for many applications in the chemical, power generation, water & sewage treatment, HVAC and general industries.

With a maximum output torque of 600 Nm, 45mm maximum output bore, and output flange sizes from F07 to F16 and +/-5º adjustable 90º stroke, the AB550M will operate a large range of ball, butterfly and plug valves, or power and process dampers.

The ambient operating temperature range can extend from -60ºC to +200ºC, while the standard IP67 environmental protection can be increased to IP68 for marine, continuous submersion and buried service duties. A firesafe option conforming to ISO10497 is also available.

Suitable for chemical, power, waterworks, HVAC and most general industrial applications

The ABM operators are quarter-turn devices intended for the operation of ball, plug and butterfly valves as well as power and process dampers. These gear operators are well suited for applications in chemical,
power, waterworks, HVAC and most general industrial applications. The AB550M will support electric actuators weight up to 46 kg and a speed up to 96 rpm.

Features and benefits

• Torque: 600 Nm For motorised torque the static safety factor is 2.
• Ratio: 34:1.
• MA: 12 +/-15%.
• Bore: 45 mm.
• Input: F10.
• Output: F07, F10, F12, F14, F16.
• Cast iron housing.
• Protected steel input shaft.
• Rugged construction.
• Axial thrust bearings.
• Stroke: 0 - 90° (± 5° adjustable).
• Standard temperature -20 to +120 °C.
• ATEX approved.
• Removable insert.

Options

• High Temperature to +200 °C.
• Low Temperature to -60 °C.
• Firesafe to ISO 10497.
• Ductile iron housing.

Environmental Specification

• Standard duty: IP67.
• Optional duty IP68: Marinised, Continuous Submersion & Buried.