KOYO Bearing Code

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Update time : 2017-12-26 11:18:36

KOYO bearing code from the basic code, pre-code and post code. Basic code indicates the bearing series and size, the front code indicates the bearing type and bearing parts, located in front of the basic code, the post code indicates the bearing structure, cage, seal and dust, tolerances, oil clearance, heat treatment and other technical requirements, After the basic code.

PREFIX

C-Cylindrical Roller Bearing Accessories (or bearing itself), for example: C00210

45C-tapered roller bearings installed in pairs, face-to-face installation, for example: 45C30210

46C – tapered roller bearings installed in pairs, back to back installation, for example: 46C30210

4CRI- four-row cylindrical roller bearing inner ring, for example: 4CRI4560F

4CRO- four-row cylindrical roller bearing outer ring, for example: 4CRO660AF

E-magnet bearings, the outer diameter is positive tolerance, for example: E10

EN-Magneto-plastic ball bearings, the negative diameter tolerance, for example: EN10

IR-needle roller bearing inner ring (inch), for example: IR1212

IRA-needle roller bearing inner ring, wider than the IR series (English), for example: IRA20

IRM-needle roller bearing inner ring, for example: IRM710

M – the maximum load capacity ball bearings, for example: M6311

OR-needle roller bearings, only the outer ring, for example: OR10876

F-deep groove ball bearings with flange, for example: F603

TR-size non-standard single row tapered roller bearings, for example: TR060702

W-wide, deep groove ball bearings, for example: W602ZZX

SUFFIX

(1) internal structure

A-angular contact bearings, contact angle of 30 degrees (not marked), for example: 7210

B-angular contact bearings, contact angle of 40 degrees, for example: 7210B

C-angular contact bearings, contact angle of 15 degrees, for example: 7210C

C-tapered roller bearings, contact angle of 20 degrees, for example: 30303C

D-tapered roller bearings, contact angle 28 degrees 30 minutes, for example: 30305D

G – Self-aligning and tapered roller bearings with axial oil clearance

J-tapered roller bearings, in line with the ISO group, for example: 30206J

N – tapered roller bearings, special noise requirements, for example: 30208N

R – Self-aligning, conical and cylindrical roller bearings for increased load capacity, eg 22228R

(2) Sealed and dustproof

OR-ball bearing with O-ring, for example: 6201 + OR

RK – single-sided, double-lip contact elastomer seal, for example: 6210RK

2RK-double-sided, double-lip contact elastomer seal, for example: 6210.2RK

RS – single-sided, contact-type synthetic rubber seal, for example: 6210RS

2RS – double-sided, contact-type synthetic rubber seal, for example: 6210-2RS

RSA – Single-sided, metal-cap contact elastomer seal, for example: 88107RSA

2RSA – double-sided, contact closure with metal cover, for example: 88107-2RSA

RSB – Single-sided, contact-type elastomer seal with metal cover, for example: 88107RSB

2RSB – Double contact, contact type elastomer seal with metal cover, for example: 88107-2RSB

RSC-RS seals made of silicone rubber, for example: 6210RSC

RSD-RSR seals made of polypropylene rubber, for example: 6210RSD

RSE – single-sided, rib-guided contact elastomer seal, for example: 6206RSE

2RSE-double-sided, rib-guided contact elastomer seal, for example: 6206-2RSE

RSF-RS type fluorinated rubber seal, for example: 6210RSF

RU – single-sided, non-contact synthetic rubber seal, for example: 6205RU

2RU-double-sided, non-contact synthetic rubber seal, for example: 6205-2RU

TR- single-sided, three-lip metal cover synthetic rubber seal, for example: 4508B-TR

2TR- double-sided, three-lip metal cover synthetic rubber seal, for example: 4508B-2TR

U-side contact with synthetic rubber sealed needle roller bearings, for example: NA4916U

UU-two-sided contact-type synthetic rubber sealed needle roller bearings, for example: NA4916UU

Z-one-sided steel dust cover, for example: 6205.Z

ZZ-double-sided steel dust cover, for example: 6205ZZ

ZL – single-sided, L-type inner diameter steel dust cover, for example: 6207ZL

ZX-Single-sided steel dust cover pressed by stop ring, for example: 6205ZX

ZXL-L type inner diameter single-sided steel dust cover pressed by stop ring, for example: 6203ZXL

ZZL-steel dust cover, double-sided, L-type diameter, for example: 6203ZZL

ZZX-steel dust cover, double-sided, pressed by the stop ring, for example: 605ZZX

ZZXL-steel dust cover, double-sided, by the retaining ring compression, L-type diameter, for example: 6303ZZXL

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