Friction

Friction is depended on the Iglide material used, the shaft material and surface finish, environmental influences (heat, dust) and external lubrication, if any is present.

Lubrication

iglide bearings are designed for use without lubrication. The solid lubricants, which are an integral part of all iglide materials, ensure low-friction operation. iglide bearings are resistant to almost all greases and oils which means that lubrication is possible if desired. Initial lubrication during installation can improve overall start-up behavior and life.

When lubricated the coefficient of friction is the same foal all iglide materials. Tests have shown that with high to medium viscosity fluids, the operating clearances of iglide bearings are sufficient to support hydro-dynamic lubrication.

Significantly high surface speeds and P x V values can be achieved in lubricated applications. Even water is an excellent lubricant.

Example: Oil lubrication application
Continuous operation with iglide G300
Speed: 780 fpm
P x V value: over 100,000 (psi x fpm)


Coefficient of friction µ as a function of lubrication type

Type of Lubrication

Coefficient of Friction
As is 0.12
Grease 0.09
Oil 0.04
Water 0.04