Timing Belt Pulleys with Machine Key Slots?

[nathan_hui]

Originally Posted by ksafin

Thanks for the help guys.

I've never used or even heard of a broach - what kind of equipment is necessary and how is the process done?

This is a good intro to broaching and keyways: https://www.youtube.com/watch?v=8tAz5YDFtAs

Basically, a broach is a multitoothed cutter that cuts a specific profile in a hole. To use it, you simply (well, not that simply) push it through the hole. You generally need a press to do this, and a specific one (if you want a good job) at that.

[ebarker]

A typical broach used for cutting 1/8 keyways in a 1/2" bore is as follows

from www.mcmaster.com

p/n 3153A16 broach
p/n 3151A109 type A collared bushing

don't let the broach fall and hit the floor or it may shatter. very strong, but brittle.

[waddell]

We have the G9771 broach set. It's not too bad for the amount of work we need to do with it.

http://www.grizzly.com/catalog/2013/Main/733

[pfreivald]

Originally Posted by ebarker

don't let the broach fall and hit the floor or it may shatter. very strong, but brittle.

And it should go without saying, but don't use a hammer instead of a press!