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 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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