Banebots 775 Pinion Specs

I’ve looked on Banebots web site, searched here, but I am unable to find the Pressure Angle and the Diametral Pitch
for the 15T Pinion(P60P-GM4050) for the RS-775-18V motor.

Does anyone happen to have that data?
Thanks,

Well to respond to my own post and to share with anyone else who might was this information. After emailing Banebots I received the following response:

“The gear is module 0.6 (not DP) with a 20 degree pressure angle.”

Now if I understood things correctly. To convert the module (Mod) to DP
It’s divide 25.4 by the module: 25.4 / 0.6 = 42.33DP

Alternatively, if I get time, I might try:
Divide number of teeth + 2 by the outside diameter
DP = (N+2)/OD

and compare my results.

You are correct that the DP of a 0.6mod gear is 42.333, but Diametral Pitch is used for inch gear sizes, while Module is used for metric gears. It really doesn’t make sense to convert the module of a metric gear to DP for calculations or gearbox design, because it’s much easier to just work with everything in metric.

To calculate the pitch diameter of a metric gear:

Number of Teeth * Module = Pitch Diameter

15t * 0.6mod = 9mm

If you are trying to use this pinion in a custom gearbox, you will probably need to wire EDM cut out (or custom machine) your own custom 0.6mod gears. While 0.6mod is a standard metric gear size, 0.5mod and 0.8mod are much more common sizes to find from suppliers like SDP/SI.

Thanks Arthur.

I’m a “software & controls” guy. Mechanical is a little bit of stretch for me.
So in leading by example, I’m stretching myself. Hopefully the students can follow suit.