| KOYO NJ2304 Bearing | 20 | 52 | 21 | KOYO | Cylindrical Roller Bearings | 
    | STEYR 2304 Bearing | 20 | 52 | 21 | STEYR | Self-aligning Ball Bearings | 
    | FAG NJ2304E.TVP2+HJ2304E Bearing | 20 | 52 | 21 | FAG | Cylindrical Roller Bearings | 
    | FAG NUP2304E Bearing | 20 | 52 | 21 | FAG | Cylindrical Roller Bearings | 
    | NSK NJ 2304 E Bearing | 20 | 52 | 21 | NSK | Cylindrical Roller Bearings | 
    | NSK 2304 Bearing | 20 | 52 | 21 | NSK | Self-aligning Ball Bearings | 
    | SKF NJ 2304 ECP  Bearing | 20 | 52 | 21 | SKF | Cylindrical Roller Bearings | 
    | KOYO 2304 Bearing | 20 | 52 | 21 | KOYO | Self-aligning Ball Bearings | 
    | NSK NU2304 Bearing | 20 | 52 | 21 | NSK | Cylindrical Roller Bearings | 
    | KOYO NU2304 Bearing | 20 | 52 | 21 | KOYO | Cylindrical Roller Bearings |