Frequently Asked Questions

What Speeds and Feeds should I use when Rotary Broaching?

Here is a link to our rotary broaching Speeds and Feeds chart:
Speeds and Feeds

As a general rule, feed rates at .002-.003 IPR and speeds at 700-800 RPM are ideal for broaching most materials. These parameters are good for aluminum, brass and mild steel. Since most forms machined with rotary broach tools are shallow, cycle times are very fast.

With some materials, the broach may skid in the chamfer when engaging the broach. This may leave witness marks on the work piece, and result in reduced tool life. A solution to this problem is to reduce the speed (perhaps to 50-100 RPM) until the broach is engaged with the work piece (about .005-.010" deep). After the broach is engaged, the RPM can be ramped up to full speed until broaching is completed.

Once broaching is completed, even if the broach holder or the work piece is turning, the broach will follow the form when exiting the hole. Many customers successfully rapid out of the hole with little to no damage to the broach. However, pilot holes with undercuts and irregular forms should use extra caution.

 Last updated Sun, Feb 23 2014 11:00pm

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