September 6, 2020

Down to the Basics: Boring.

Over the next couple weeks, we’re going to go over the six, basic machine processes that go into making our parts; Turning, Hobbing, Milling, Tapping, Boring and Broaching.

Although there are numerous post-production steps that go into finishing a Profile Racing part, this is where it starts.

Up Third: Boring.

Boring needs an existing hole whether it’s pre-drilled or tubing. Boring can enlarge a hole, improve finish, and do some internal shaping.

All of our Bottom Brackets cups have bore work; Inboard Euro, Outboard Euro, and pictured here, the American Press-in Cup. On the American cup, the boring bar bores the bearing pocket and the internal chamfer.

On our hubs shells, the drive side of the shell gets both a bearing bore and a driver bore which is much more work.

Thanks for the continued support, we’ll see you next week.

September 6, 2020


We are taking precautions to protect our employees and follow CDC and state guidelines. In the meantime, our machine shop is still running, we're here to assist you and we'll be shipping product to help support bike shops during this difficult time.