CRBS, CRBH etc.

RA

RB

RU

The basic code follows the same format as other bearings. It consists of a type of code at the beginning, followed by size (width series), and then the inner diameter series.

Seal Type Codes

-: no seal

UU: Seals on both side

U: Seal on outer ring counterbore side

UT: Seal on outer ring non-counterbore side

Radial Clearance Type:

CC0: Negative clearance (preload)

C0: Positive clearance

C1: Greater positive clearance than C0

Accuracy Level:

-: no symbol, P6

P5: rotational accuracy in accordance with ISO standard class 5

P4: rotational accuracy in accordance with ISO standard class 4

P2: rotational accuracy in accordance with ISO standard class 2

USP: rotational accuracy in accordance with ISO standard class USP

FC: Paired face-to-face tandem arrangement.

CC: Axial clearance greater than CB.

RS: Contact rubber seal.

Please note that bearing designation methods may vary from country to country, and the above explanation is specific to the BRZB designation method for crossed-roller bearings.