AGMA 421.06 : 1969
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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PRACTICE FOR HIGH SPEED HELICAL AND HERRINGBONE GEAR UNITS
23-07-2013
12-01-2013
Includes design, lubrication and rating for helical and herringbone external tooth parallel shaft speed reducers or increasers. Units covered include those operating pinion speeds of 3600 rpm and higher, or pitch line velocities of 5000 feet per minute and higher.
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