| KOYO 6321 BI Bearing Details: | ||||||||||||||||||
	
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| KOYO 6321 BI Bearing Bearing Size and Drawing: | ||||||||||||||||||
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| Model | Inner Diameter d(mm)  | Outer Diameter D(mm)  | thickness B(mm)  | Brand | Type | 
| RIV NJ321 Bearing | 105 | 225 | 49 | RIV | Cylindrical Roller Bearings | 
| NACHI 6321-Z Bearing | 105 | 225 | 49 | NACHI | Deep Groove Ball Bearings | 
| KOYO 6321RU Bearing | 105 | 225 | 49 | KOYO | Deep Groove Ball Bearings | 
| MRC 7321 C Bearing | 105 | 225 | 49 | MRC | Angular Contact Ball Bearings | 
| NTN 7321C Bearing | 105 | 225 | 49 | NTN | Angular Contact Ball Bearings | 
| SNR 7321 AC Bearing | 105 | 225 | 49 | SNR | Angular Contact Ball Bearings | 
| KOYO NF321 Bearing | 105 | 225 | 49 | KOYO | Cylindrical Roller Bearings | 
| STEYR NJ 321 Bearing | 105 | 225 | 49 | STEYR | Cylindrical Roller Bearings | 
| KOYO 6321-2RZ Bearing | 105 | 225 | 49 | KOYO | Deep Groove Ball Bearings | 
| KOYO 7321AC Bearing | 105 | 225 | 49 | KOYO | Angular Contact Ball Bearings |