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Needle Roller Bearing Series

IKO Standard Type Crossed Roller Bearings CRBC/CRB

IKO Standard Type Crossed Roller Bearings CRBC/CRB

The outer ring is divided into two, but in order that they do not separate during transport or attachment, they are fixed with screws, and handling is easy.


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Some products are not shown in the catalogue. Also, modifications can be made to meet your requirements. Please do not hesitate to make inquiries.

Product Outline

IKOCrossed Roller Bearing is a bearing with compact structure in which the rollers are arranged so that they cross between the inner ring and the outer ring. Since the rolling surface is line contact, elastic displacement based on bearing load is extremely minimal, and in addition, it is able to receive complicated loads consisting of radial load, axial load, and moment at the same time.
This bearing is broadly used in revolving parts that require compactness, high rigidity, and revolution accuracy such as industrial robots, machine tools, and medical equipment.
Furthermore, we also manufacture bearings made of stainless steel, and those with attachment holes in inner and outer rings, so please make inquiries at IKO.

Internal Structure and Shape

IKO Crossed Roller Bearings have abundant line-ups in series such as with cage, with separator, open type, and closed (sealed) type.

Guiding System of Rollers

Guiding System of Rollers
Crossed Roller Bearings come in systems of ones with cage, ones with separator and ones with full complement.
Ones with cages and separators have small friction coefficients and they are suitable for places having rather high-speed revolution, and ones with full complement are suitable for places having low revolution and where heavy loads are added.

Structure of Seal Portion

Shape of Outer Ring Outside Diameter Surface
There are the open type and closed (sealed) type for the Crossed Roller Bearings. The closed (sealed) type has a built-in seal made of special synthetic rubber on the bearing side surface so it exhibits excellent sealing effect against dust and grease leaks.
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