Rotork releases IS21 high-thrust spur gearboxes with a thrust rating of 4350 kN for manual operation and 2900 kN for motorized operation. The IS21 incorporates an F60 cast ductile iron thrust base, thrust bearings, spigot ring and output sleeve. Corresponding maximum output torques is 46100 Nm and 43386 Nm respectively.
Designed for the operation of gate, globe and sluice valves and penstocks, all IS gearboxes are designed with customer stocking in mind, featuring 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 totally enclosed gearing is grease filled for life and available in a wide range of ratios. The option of combined spur and bevel gear combinations adds even more operational flexibility. The addition of the IS21 to the existing range enables the gearboxes to be used for the manual or motorised operation of the largest valves to be seen in markets including water and waste treaent, power generation, petro-chemicals and general industry.
For nearly sixty years, engineers have relied upon Rotork for innovative and dependable flow control solutions. Rotork products and services are helping companies in the oil & gas, water and waste water, power, marine, mining, food, pharmaceutical and chemical industries around the world to improve efficiency, assure safety and protect the environment.