Core Tip: KOYO's bearing code consists of basic code, pre-code and post code. The basic code indicates the bearing series and dimensions. The front code indicates the bearing type and bearing parts.
The bearing code of KOYO Company consists of basic code, pre-code and post code. The basic code indicates the bearing series and dimensions. The front code indicates the bearing type and bearing parts. It is located before the basic code. The rear code indicates the structure of the bearing, cage, sealing and dustproof, tolerance, oil gap, heat treatment and other technical requirements. After the basic code. 1. Front code C- cylindrical roller bearing attachment (or bearing itself), for example: C00210 45C- Paired mounting tapered roller bearings, face to face installation, eg 45C30210 46C- Paired installation of tapered roller bearings, back to back installation, 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- magnetic motor ball bearing, outer diameter is positive tolerance, for example: E10 EN- magnetic Motor ball bearing, outer diameter is negative tolerance, for example: EN10 IR- needle bearing inner ring (inch), for example: IR1212 IRA- needle bearing inner ring, wider than IR series (imperial), for example: IRA20 IRM- needle roller Bearing inner ring, for example: IRM710 M- maximum load capacity ball bearing, for example: M6311 OR- needle bearing, only outer ring, for example: OR10876 F- deep groove ball bearing 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 2. Rear code (1) Internal structure A- angular contact bearing, contact angle 30 degrees (not marked), for example : 7210 B- Angular contact bearing, contact angle 40 degrees, for example: 7210B C- angle Contact bearing, contact angle 15 degrees, for example: 7210C C- tapered roller bearing, contact angle 20 degrees, for example: 30303C D- tapered roller bearing, contact angle 28 degrees 30 minutes, for example: 30305D G- compression axial oil gap Self-aligning and tapered roller bearings J- Tapered roller bearings, in accordance with ISO grouping, for example: 30206J N- Tapered roller bearings, special noise requirements, eg 30208N R- Sizing for increased load capacity, conical and cylindrical rollers Sub-bearings, eg 22228R (2) Sealed and dust-proof OR-ball bearings with O-rings, eg 6201+OR RK- single-sided, double-lip contact synthetic rubber seals, eg 6210RK 2RK- double-sided, double Lip contact synthetic rubber seal, eg: 6210.2RK RS- single-sided, contact-type synthetic rubber seal, eg 6210RS 2RS- double-sided, contact-type synthetic rubber seal, eg 6210-2RS RSA- single-sided, with metal cover contact Synthetic rubber seal, eg: 88107RSA 2RSA- double-sided, with metal cover contact synthetic rubber seal, eg: 88107-2RSA RSB- single-sided, contact-type synthetic rubber seal with Gaga metal cover, eg: 88107RSB 2RSB- double Face, contact synthetic rubber seal with Gaga metal cover Example: 88107-2RSB RSC- silicone rubber RS seal, for example: 6210RSC RSD- polypropylene rubber RS seal, for example: 6210RSD RSE- single-sided, rib-guided contact synthetic rubber seal, for example: 6206RSE 2RSE- double Face, rib guide contact synthetic rubber seal, for example: 6206-2RSE RSF- RS type fluorinated rubber seal, for example: 6210RSF RU- single-sided, non-contact synthetic rubber seal,
