Solid Lubrication
Technology

Koyo solid lubrication is an alternative lubricant for bearings.

It was developed by Koyo for applications where oil or grease does not provide the best lubricant solution.

The solid lube is inserted into the bearing in an injection molding machine. The compound of polyethylene, synthetic oil (~70%) and additives, provides a long lasting (forced) lubrication.

This lubrication technology is specifically interesting for severe operating conditions like oscillating movements, or moderate speed/high load applications.

This type of lubrication is not suitable for applications where operating temperatures of more than 85 degrees are reached.

Solid lube is currently offered for application in Needle -and Cylindrical roller bearings for which a sufficient volume is needed to justify the (small) investment for the unique injection mold, which is required for each bearing type & size.

For more background information and details please refer to the Koyo Solid Lubrication Technology flyer, which can be downloaded here or contact us directly via: This email address is being protected from spambots. You need JavaScript enabled to view it.

FAQ

What is an angular contact ball bearing?

An angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to want to separate the races axially. So the angle of contact on the inner race is the same as that on the outer race. Angular contact bearings better support "combined loads" (loading in both the radial and axial directions) and the contact angle of the bearing should be matched to the relative proportions of each. The larger the contact angle (typically in the range 10 to 45 degrees), the higher the axial load supported, but the lower the radial load. In high speed applications, such as turbines, jet engines, and dentistry equipment, the centrifugal forces generated by the balls changes the contact angle at the inner and outer race. Ceramics such as silicon nitride are now regularly used in such applications due to their low density (40% of steel). These materials significantly reduce centrifugal force and function well in high temperature environments. They also tend to wear in a similar way to bearing steel—rather than cracking or shattering like glass or porcelain.

Most bicycles use angular-contact bearings in the headsets because the forces on these bearings are in both the radial and axial direction.

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