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Needle Roller Bearing Series

IKO Mounting Holed Type High Rigidity Crossed Roller Bearings CRBF

IKO Mounting Holed Type High Rigidity Crossed Roller Bearings CRBF

Both the inner ring and the outer ring have integrated structure (Inseparable), and attachment holes are made to the inner ring and outer ring so attachment can be made easily. Furthermore, it is not easily affected by surrounding structures such as housing and presser plate, therefore, a high rigidity and high accuracy rotation are realized.


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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

Model of bearing Mounting hole on the inner ring Seal structure Identification number Size
10 20 25 35 55 80 90 115
CRBF…A Tapped hole Open type CRBF…AT
Sealed type CRBF…ATUU
Counterbores in same configuration Open type CRBF…A - - - - -
Sealed type CRBF…AUU - - - - -
Counterbores in reverse configuration Open type CRBF…AD - - - - -
Sealed type CRBF…ADUU - - - - -
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