FAG super precision bearing can be used in the highest speed. If you use grease lubrication, speed index n · dm 2.0 · 106 mm/min, if oil lubrication 3.0 · 106 mm/min or even higher. Such high will produce high centrifugal force, the function, the ring on inflation. Inflation will lead to the inner circle diameter increases, influence inner circle the coordination of shaft neck.

This may produce results:

? wear corrosion

? Inner circle in the shaft neck skidding

? Shaft neck lose guidance is easy to vibration

? may eccentric misalignment low bearing performance.

The above of various circumstances can through the bearings and shaft neck to avoid a tight fit. The quantity can be made by the table 11 or by BEARINX ? calculated program. This method of the obtained numerical, at the highest speed still want to leave 1 μ m of surplus quantity.