Machine Tool

Market demand for increased productivity and product machining efficiency has led to regular improvements in speed and efficiency of machine tools.

Market demand for increased productivity and product machining efficiency has led to regular improvements in speed and efficiency of machine tools.

By using the high-quality bearings, the level of performance can be increased at the same time. Our Koyo branded machine tool bearings are promoting a higher speed, excellent accuracy and stability.

Experience and capabilities

High-Precision bearings for machine tools

Koyo High-Precision bearings (cylindrical roller bearings and angular contact ball bearings) are often being used in machine tools spindles. For more information you can download our catalogue of Precision Ball & Roller Bearings for Machine tools, ref. no. B2005E

High-Ability bearings

Our High-Ability bearing series consist of ultra-precise angular ball bearings for machine tool spindles. These are characterized by a superior high-speed performance, accuracy and stability. For more information please consult our High-Ability Ball Bearings series catalogue B2006E

Support Bearings for precision ball screws

The support bearing unit combines a precision ball screw support bearing (SAC) with a precision machined housing. It has a superior performance for assembling. Please contact us for more information.

Bearing 3D

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.

For more information please click here “Products

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