Ball bearings WIB - Technical information - Improvements to the outer ring contact surface characteristics

TECHNICAL INFORMATION Improvements to the outer ring contact surface characteristics By applying surface treatments on outer ring contact surfaces, it is possible to improve certain mechanical characteristics such as the hardness. By doing this, the wear resistance will be increased and the friction coefficient decreased. With certain treatments it is possible to achieve high resistance to specific chemical agents. The table on the right shows some examples of such surface treatments and their resulting technical characteristics. Surface treatments on internal rolling parts such as balls, cages, and raceways can be carried out to increase the resistance to wear or the behavior of the bearings in cases of uncertain lubrication. Some of these treatments even allow dry lubrication, for instance when oil or grease is not acceptable.
	Example of surface treatment	Hardness	Thickness µ m
	ARMOLOY ATC	1100 HV (72 HRC)	Some µ m
	DURALLOY Matt DSV	1200 to 1400 HV (74 HRC)	2 to 20
	BALINIT C	1000 HV (70HRC)	1 to 4
Improvement of the Contact Surfaces (Standard Bearings) Back to Technical Information Menu