The advantage of a shaft mounted hollow shaft gear boxes is less number of components, low speed coupling is not required, compact drive arrangement, simple alignment etc., and on input side, flanged motor can reduce cost, components and space requirement. The torque arm is a connecting link between the reducer and a fixed point intended to resist the torque developed by the gearbox, transmitting the reaction torque produced by the gearbox, and preventing the counter-rotation of the gearbox during operation. The motor may be fixed to the gearbox using an input flange adapter with coupling or fixed in the gear housing by a motor mount which the power is transmited to gearbox by pullyes and V-belt.Ĭonsidering that the gearbox is mounted directly onto an equipment driven shaft with no other external support, it will be necessary a torque arm attached to it. The gearbox hollow shaft can be with keyway, bushing or shrink disk. Shaft mounted gearboxes provide one solution to meet the needs for an application, this solution is a hollow shaft gearbox mounted directly onto the equipment driven shaft which must support the gearbox.
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