Page 325 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair
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Tpical Gear Unit Arrangements 305
Figure B-8. High speed, high horsepower double reduction gear unit
(cover removed) containing double helical gearing and utilizing a torque
shaft and two flex-rigid couplings to transmit power from the high speed
gear set to the low speed gear set. The use of this arrangement enables
much more horsepower to be transmitted at much higher ratios and
speeds than is possible with a simpler arrangement. It also makes possi-
ble torsional fine-tuning of the gear unit and the entire machinery train.
