Page 245 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair
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Power lhsmission Gears 227
GEARS
Figure 6-1. Pair of spur gears and spur rack.
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+HINGBONE
SINGLE GEARS HELICA&.OOUBLE-HELlCAL 1 GEARS
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HELICAL RACK -w/
Figure 6-2. Pairs of single helical and double helical gears and helical rack.
