Kaufman Products designed and developed the RPB 200 boring system for rebuilders who needed to be able to bore rack and pinions on a production basis. As a testament to the boring machine’s performance, today there are over 100 rebuilders worldwide using this tooling. Our production machine will enable you to bore all domestic and most foreign racks through 1999. The machine is shipped complete with a coolant system and all necessary mechanical, pneumatic and electrical controls. The boring system requires 60-psi shop air and 110V electricity. 

All racks are vertically located in the boring fixture by their upper and lower pinion bearing bores. This enables you to bore a hole that is parallel and concentric to the original bore to within .001". The rack is held in this position by air clamping for quick loading and unloading. All tools and fixtures are made of hardened steel and fixtured by dowel pins for quick tool change- over and long life. The cutting tool used to bore a casting is a solid, one piece, five-flute cutter with a pilot that limits the depth of cut. The cutter and pilot can not be adjusted. All sizing is ground into the cutter. This makes it impossible to ruin a casting by boring too big or too deep a hole. All sleeves are pressed in with a .003" press fit (+/- .0002"). When you press in a sleeve, it stops at the machined depth so that your pre-drilled sleeve will line up with the port holes in the rack casting. Again, all these features are built into the tooling so that no adjustments or pre-measuring is necessary during tool change-over. It is impossible to ruin a casting in the machining and sleeving process.

There are four basic manufactures of racks that need to be sleeved: Ford, TRW, Saginaw, and ZF. Likewise, there are four different sizes of sleeves and therefore, four different set-ups of the basic boring machine. Set-up time or tool change time from one manufacturers’ rack to another is two minutes. The machining time to bore a rack is 30 seconds. The boring machine and tooling never need adjusting once the boring fixture is set onto the boring machine. The RPB 200 production boring tooling can be operated and changed over by anyone you presently have working for you in your plant because of its very simple design.

This tooling is available to work with all current sleeve manufactures, or sleeves of your design.

Each tooling package consists of a boring cutter with pilot, upper rack locator, and base pilot locator(s).

Note: Used RPB 200 packages available at this time; contact us for details.