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BY INDUSTRY

Railway

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

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. 

Experience and capabilities

Our high precision and high ability bearings fulfill the requirements of this industry. One of the notable applications of Koyo bearings is the Shinkansen train, the famous high-speed bullet train in Japan which we have supplied with bearings for the motor and transmission.

Bearing 3D
FAQ

What is a tapered roller bearing?

A tapered roller bearing is a bearing in which tapered rollers (truncated conical rollers) are inserted between the cup (outer ring) and cone (inner ring). The rollers are guided by the cone back face rib.

They have high radial and axial (thrust) load capacities at low to intermediate speeds. Taper roller bearings are available in single-row, two-row and four-row designs. With single-row bearings, the thrust load capacity is about 60% of the radial capacity. Double-row bearings have a greater radial load capacity and can handle thrust loads from both directions. The rollers can be configured so that the contact lines to the races converge or diverge towards the axis of rotation. Diverging double-row bearings increase the rigidity of the shaft mounting, but converging bearings do not. Other configurations for double-row bearings feature a single outer ring and two inner rings, or two outer rings and a single inner ring. Four-row tapered roller bearings consist of four rows of alternating converging and diverging rollers.


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