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Measure Module

Measure Module

Measure Module

(OP)
I have some gears on hand, I want to check what module on the gear. How do I check? I think they are .5 or .6 module but I'm not sure. Is there a tool for checking gear module? thanks

RE: Measure Module

Pitch Diameter equals module times the number of teeth.
This assumes no profile shift otherwise you are measuring
as cut pitch diameter.

RE: Measure Module

Or M = OD/(Z+2) if nothing else is going on.

RE: Measure Module

Module is a metric unit. The formulas given by dinjin and Occupant are only valid if you measure the OD or pitch dia in mm.

RE: Measure Module

(OP)
I see thanks so much.

Sorry, I'm a grasshopper. I want to know how to measure the Pitch Diameter? It is too small.

RE: Measure Module

Open your NHB. Since you have the O.D. and the number of teeth - you can find a formula to figure out everything else.  

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