Motors survive weight and heat
A
Siemens Flender product story
Edited by the Engineeringtalk editorial team
Jan 14, 2008
Each 10m tall hoist contains a large FZG helical unit (size H4 HH15) with a 55kW six-pole motor, plus a total of 13 Motox helical bevel geared motors in varying sizes.
Several large Flender FZG and Motox units have been specified for two steel industry hoist applications in Finland.
Each 10m tall hoist contains a large FZG helical unit (size H4 HH15) with a 55kW six-pole motor, plus a total of 13 Motox helical bevel geared motors in varying sizes (from KA88 to KA148), all fitted with eff1 motors.
The hoists were designed by Flender drive system specialist Jacksons Power Transmission.
A tremendous lift weight was required of the system; 75,000Nm delivered torque, with a gearbox ratio of 250:1 for the main gear unit.
The hoists will be used in conjunction with other equipment for the secondary treatment of ladles of specialised molten steel.
The whole plant is designed to operate at a wide range of ambient temperatures of between -20C and +50C.
The project was shipped to Finland during December 2007 via SMS Mevac UK, a specialist in secondary metallurgy.
It comprises two identical crane hoists, the second of which is now being assembled.
Pete Jackson of Jacksons Power said: "Flender were able to offer special double-input geared units to meet the design criteria within the very tight delivery period that we and our customer required".
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