Gear Compatibility 2

[SaturnVI]

Greetings:

Is a 10 module gear compatible with an American Standard Involute Stub tooth gear? Both gears have 20 degree pressure angles. I haven't had much luck finding information on 10 module gear profiles so I'm not sure if the two gears will fit properly. Thanks.

 

[tpederzani]

Your question is ambiguous, at least to me. Are you asking if two particular gears can mesh? (One being a 10 module with an unknown tooth standard and the second being an unknown module/pitch with stub form teeth.) Or are you asking if the stub tooth standard applies to metric/module gears?

 

[SaturnVI]

Yes, I'm wondering if the two gears can mesh. The module 10 gear has a pressure angle of 20 degrees and a diametral pitch of 2.54. The American Standard Involute Stub Tooth gear has a pressure angle of 20 degrees and a diametral pitch of 3.

 

[drawoh]

SaturnVI,

It will work at very low speed if you mesh outside the line of action and you do not mind bumpy action.

--
JHG

 

[juergenwt]

NO!

 

[SaturnVI]

Thanks. I didn't think it would.

 

[tbuelna]

SaturnVI-

In theory it might be possible to get a set of gears to "mesh" with one having a 2.5DP/20degPA and the other having a 3.0DP/20degPA. However, depending upon the tooth counts, it would probably require some extreme amounts of profile shift, tip relief, CTT reduction (backlash), etc. The resulting geometry would also likely produce lots of contact sliding and would be very noisy, inefficient, and prone to scoring failure.

Maybe you would be kind enough to explain why you need to use this combination of gears?

 

[dinjin]

Why would you not use a 10 module gear and a 2.5 DP gear for
a comparison? These might operate with expanded backlash and
at low speeds.

 

[SaturnVI]

Maybe you would be kind enough to explain why you need to use this combination of gears?

We have a standard pinion gear that we use with geared bearings. On the project I'm working on, we are using a different bearing (with a module 10 profile), which is why the gear profile is an issue. I passed this information along to our machinist and we are now using a module 10 pinion gear instead of our standard.