Spur gearbox hits higher thrust rating

Written by: Tom Austin-Morgan | Published:

Rotork's latest multi-turn, thrust taking spur gearbox adds higher thrust ratings to its range.


The IS21 incorporates a new F60 cast ductile iron thrust base, thrust bearings, spigot ring and output sleeve. The thrust rating rises to 4350kN for manual operation and 2900kN for motorised operation. Corresponding maximum output torques rise to 46100Nm and 43386Nm respectively.

Designed for the operation of gate, globe and sluice valves and penstocks, the IS21 features a removable output sleeve for separate spindle machining. The standard IP67 watertight and temporarily submersible enclosure can be optionally increased to IP68, whilst the standard operating temperature range of -40ºC to 120ºC can also be expanded to suit specific high or low temperature demands.

The enclosed gearing is grease filled for life and available in a range of ratios. The option of combined spur and bevel gear combinations gives operational flexibility. The IS21 enables the gearboxes to be used for manual or motorised operation in water and waste treatment, power generation, petro-chemicals and general industry.


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