The current position:

TRANSMISSIONGEARS

release time:2015-12-03 10:12 | effective date:2015-12-03 10:34:58
This Chapter applies to type approval and inspection of forged steel inside and outside mesh involute straight-tooth gears, helical gears and herringbone gears which are capable of reversion, speed reduction, engaging and disengaging, and bearing propeller thrust, transmission gears used in main propulsion machinery and generator-driving auxiliary machinery where the transmitted power is equal to or more than 100 kW, and their variants (such as clutches, reduction gears). For other types of transmission gears, reference may be made to in this Chapter.
M04TRANSMISSIONGEARS clean.pdf
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