Gear speed
Gear speed
(OP)
Hello, I am looking for a reference as to how fast I can spin helical gears based on their size. The only info I have found is a statement in my Mechanic Design Handbook that says if the Pitch Line Velocity goes above 2000 ft./min., cooling should be considered. Any good sources of on this, or at least rules of thumb?





RE: Gear speed
I guess it is good to look for some AGMA Standards. There are so many consideration issues; so, what type of application will you be doing and what speed are you seeking I think finding aswers to these questions might help you more.
Regards
RE: Gear speed
I think that is, at least partly, a heat generation (due to oil shear/churning) limit, not a structural limit. In the past few years I witnessed/endured some painful situations resulting from real low estimates of heat generation by pretty big name gearbox suppliers houses. Some kind of minimal lubrication system (like air-oil as used in high speed ball and roller bearings) seems to be the answer. I think I read The Nascar guys have moved to controlled lube for trans and rear axles partly for heat (thus power) reasons.
Whatcha making?
RE: Gear speed
917-B97 Design Manual for Parallel Shaft Fine-Pitch Gearing
2001-C95 Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth
RE: Gear speed
gary@gearmfg.com
RE: Gear speed
RE: Gear speed
RE: Gear speed