The MICROFINISH process, also known as Superfinish, is a machining process for improving the surface and geometric form of components, with a precision of up to 0.1 Microns (0.0001 mm). Microfinish employs special finishing stones, finishing tape or cup wheels for extremely precise and controlled removal of material. Light pressure is applied to the component surface across a relatively large contact area, serving to remove the brittle, amorphic layer resulting out of previous processes, such as grinding or hard-turning. Cooling solution serves to dissipate process heat so that no amount of undesired material deformation takes place. Machined materials include metals, ceramics, glass as well as some types of synthetic materials.

Benefits for microfinished components:

Microfinish can be used:

to minimize friction (noise) between components

to improve component durability

to improve sealing capacity

to maintain extremely close dimensional tolerances

to create defined, high precision surface structures, profiles or geometry

Common Microfinishing applications:

Developed by Chrysler in the 1930s, the technology finds widespread use in manufacturing:

Engine components

Fuel injection components

Transmission components

Ball- and roller bearing rings and rolling elements

Pumps

Sensors

Medical applications (balls and cups of artificial hip joints)

Steering components and linear motion

Printing rollers

Aerospace