Rottler’s Centerless Grinding System is able to grind a set of valves to exact same length without adjusting settings.
The Centerless System rotates the valve stem on it’s own centerline. Precision drive rollers rotate the valve stem and a pneumatic low friction steady rest support the valve stem similar to a precision balancing machine, resulting in extremely accurate valve stem to valve seat run out less than .0002″ (.005mm) TIR. The Rottler Centerless System allows a wide range of valve stem diameters to be ground without changing any collets or chucks.
- Valve Refacing