WHAT IS BURNISHING?

Roller Burnishing is a Super finishing process. It is a Cold Working process which produces a fine surface finish by the planetary rotation of hardened rollers over a bored or turned metal surface. Since all machined surfaces consist of a series of peaks and valleys of irregular height and spacing, the plastic deformation created by roller burnishing is a displacement of the material in the peaks which cold flows under pressure into the valleys. The result is a mirror-like finish with a tough, work hardened, wear and corrosion resistant surface. 

ADVANTAGES OF ROLLER BURNISHING 

Mirror Finish in One Pass Accurate Sizing, Close Tolerances Improved Metallurgical Properties - Work Hardened Surface Increase in fatigue strength No Additional Machine Investment- attachable to any Standard Machine Tool Already Present in the Shop Long Tool Life No Operator Skill Required Low Torque & Power Requirements Maximum Parts Interchangeability.