By Industry

KOYO brand bearings from JTEKT are found virtually anywhere where accurate rotational control is required

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.

At JTEKT we manufacture a range of advanced bearing and products for the Marine Industry.

Our products competitive edge means an improved performance, longer life and the capability to operate in a variety of marine environments.

The use of diagnostic devices in the medical and healthcare industry has increased dramatically over the past few years.

The CT-scan (Computed Tomography) is one of the devices which are being used for preventive and diagnostic screening in modern health care. JTEKT is present on this market segment, too, supplying EXSEV bearings for the CT scan equipment.

The many bearings in a motorcycle have various functions such as supporting a spinning crankshaft or keeping the wheels on the road.

They guide and support moving parts, reduce emitted heat, alleviate friction and minimize power loss. Koyo is a manufacturer of motorcycle bearings for several well-known motorcycle brands like Kawasaki and Suzuki. We offer a range of bearings for a variety of applications including chassis, engine and motorcycle transmission.

Rail transport is a major form of passenger and freight transport all over the world.

Railway vehicles are exposed to tough continuous use for a very long time, often in harsh conditions. It goes without saying that safety, reliability and fault-free operation is required from any component used for such applications.

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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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