| Bore diameter | d | 20 | mm |
| Width | B | 15 | mm |
| Basic static load rating, radial | C0r | 7,900 | |
| Limiting speed | nG | 19,800 |
| Outside diameter | D | 52 | mm |
| Basic dynamic load rating, radial | Cr | 16,900 | |
| Fatigue load limit, radial | Cur | 540 | N |
| Reference speed | nϑr | 14,400 |
| Minimum diameter shaft shoulder | da min | 27 | mm |
| Maximum fillet radius | ra max | 1.10 | mm |
| Maximum diameter of housing shoulder | Da max | 45 | mm |
| Minimum chamfer dimension | rmin | 1.10 | mm |
| Shoulder diameter inner ring | d1 | 30.30 | mm |
| Shoulder diameter outer ring | D1 | 41.90 | mm |
| Manufacturer | Part Number |
|---|---|
| NSK | 6304 (NSK) |
| Bearings Company of America | 304 |
| GPZ Bearings | 304 |
| Hoover | 304 |
| Marlin-Rockwell Corp. | 304-S |
| Renault | 953606304 |
| Seat | EA-128177.00 |
| Seat | EA1.28.177.00 |
| Saab-Scania | 703334 |
| Saab-Scania | 7033343 |
| Mazda | 9-606-6304 |
| Faun | 37205003004 |
| Citroen | 7902100601 |
| MAN | 9006304 |
| TIMKEN | 304WB |
| ISO | 20BC03 |
| Rover | 2-5 |
| Seat | NR-231447.70 |
| Fiat | NR12817700 |
| Talbot | P40017 |
| White Motor | 5Y248 |
| ZF | 0635900026 |
| Renault | 0770630400 |
| Rover | 3A5192 |
| SKF | 6304-J |
| Talbot | 0016508000 |
| Renault | 0023416304 |
| Fiat | 068906 |
| Voith | 01.0027.47 |
| Piaggio | 01.12 |
| Steyr-Daimler-Puch | 010-001-010-1 |
| Vidal | 010-1-10 |
| ZF | 0635333006 |
| MTZ Tractor | WPO-304 |
| Talbot | 4040543738 |
| MCR | ERB39 |
| Federal Bearings | 1304 |
| Volkswagen | 0062504440 |
| Alfatec | 2900.60114 |
| Fiat | 2208798 |
| Alfatec | 15020.13982.00 |
| FORD | 1525632 |
| Talbot | 22433A |
| Fiat | 71213006 |
| Honda | 91003-634-004 |
| Zetor | 971055 |
| Steyr-Daimler-Puch | 0039819725 |
| Atlas-Weyhausen | 0502.3104.00 |
| RIV Officine di Villar Perosa | 5B |
| SKC | 5950186 |
| RHP | 9/MJ20 |
| CBF Cuscinetti | 5M |
| SKF | 5M |
| Fafnir | 6304 |
| Fischer Bearings | 6304 |
| KOYO | 6304 |
| MGM Bearings | 6304 |
| FLT | 6304 |
| GMN | 6304 |
| Volkswagen | 399663-2 |
| Volkswagen | R6304 |
| SKF | 6304 (SKF) |
| Porsche | 047057 |
| UBCO | M020 |
| Someca Tractor | 200889 |
| ZKL-ZVL | 6304 |
| SKC | 5852844 |
| Fiat | 021749 |
| SKF | 440016 |
| Torrington | T304 |
| Atlas Copco | 0502310400 |
| Schiess-Froriep | 306304 |
| Hyatt | 3304 |
| RIV Officine di Villar Perosa | 5B20 |
| Neuweg Fertigung GmbH | 6304 |
| RHP | 6304 |
| Steyr-Daimler-Puch | 6304 |
| Fafnir | 304K |
| SKF | 6304/QE6 (SKF) |
| NSK | 6304CM (NSK) |
| Alfatec | 15005.23035.00/28 |
| Rover | 197461 |
| Iveco / Magirus | 23144770 |
| Volvo | 11022 |
| Volkswagen | 14628 |
| Peugeot | 16842 |
| Fiat | 201851550 |
| Peugeot | 2372-05 |
| Fiat | 23144770 |
| Isuzu | 00090-194 |
| Peugeot | 1.404.68148 |
| Volkswagen | 10184 |
| Volkswagen | 10301333 |
| Lamborghini | 11/5 |
| Piaggio | 12/1629 |
| Volkswagen | 125092820 |
| Talbot | 128203 |
| Rover | 130127 |
| Rover | 130127Z |
| Saab-Scania | 14125 |
| Alfatec | 14313 |
| Volkswagen | 146146 |
| Fiat | 17217 |
| Talbot | 173020 |
| Rover | 174878 |
| Lamborghini | 18/8 |
| Oerlikon-Boehringer | 2343N |
| Peugeot | 237204 |
| Peugeot | 237205 |
| Peugeot | 237210 |
| Fiat | 24027 |
| Zetor | 24574 |
| DAF-Truck | 8-20-890094 |
| Rover | CAV320 |
| Citroen | 2535 |
| Alfatec | 2900.60792 |
| Parilla | 2987 |
| Fiat | 3/0185155 |
| Alfatec | 18130 |
| Volkswagen | 301333 |
| SKC | 3014055 |
| Steyr-Daimler-Puch | 3129810625 |
| Fiat | 314477 |
| Talbot | 314477 |
| Faun | 3195003004 |
| Talbot | 32201U |
| Nissan | 32273-14360 |
| Volkswagen | 3250443 |
| Fiat | 32603 |
| Fiat | 328185 |
| Volkswagen | 3520443 |
| Pegaso | 3610542000 |
| White Motor | 394587 |
| Agrale | 4.001-1.919 |
| M.E. GmbH (D) | 4.411.135 |
| ISO | 40121 |
| Talbot | 4040128203 |
| Innocenti | 41030078 |
| Peugeot | 419 |
| Peugeot | 4412820300 |
| Talbot | 4412820300 |
| Talbot | 4454373800 |
| Talbot | 466A |
| Porsche | 47057 |
| Faun | 5003004 |
| Citroen | 503594 |
| Fiat | 185155 |
| Rover | 5332Z25 |
| Rover | 53851 |
| Rover | 53851Z |
| Peugeot | 543738 |
| Talbot | 543738 |
| Kaelble | 5546 |
| Kaessbohrer | 6.691.085.000.0 |
| Volkswagen | 60009098720 |
| Steyr-Daimler-Puch | 000625006304 |
| Volkswagen | 60009098720000 |
| MAN | 61/7322 |
| Conveyancer Fork Trucks | F600226 |
| DAF-Truck | 610N6304 |
| Fiat | 61204060 |
| Someca Tractor | 615609 |
| Dennis (GB) | 62268 |
| Dennis (GB) | 62269 |
| Steyr-Daimler-Puch | 632292 |
| Wohlenberg | 7070057 |
| Fiat | 71555 |
| Someca Tractor | 73200889 |
| B.S.A. Motorcycles | 76-7508 |
| Rover | 76-7508 |
| Fiat | 2048051 |
| Lancia | 2048051 |
| Renault | 7706304 |
| MAN | 785125104 |
| Lamborghini | 8/8 |
| Fiat | 2/314477/0 |
| Lancia | 82048051 |
| Talbot | 4416508000 |
| Fiat | 44401 |
| Peugeot | 4454373800 |
| Jawa Moto | 6000306304 |
| Unic Truck | 204060 |
| Wegmann & Co. | 6295629 |
| Lancia | 82208798 |
| Steyr-Daimler-Puch | A3449817025 |
| MAN | 87.51160.0500 |
| Volkswagen | 22.34 |
| DAF-Truck | 226574 |
| Someca Tractor | 23144770 |
| Alfatec | 24130.14313 |
| Isuzu | 9-00006-304-0 |
| Rover | X53851Z |
| MAN | 90785125104 |
| Honda | 91001-035-000 |
| Honda | 91003-657-003 |
| Honda | 91003-657-008 |
| Honda | 91003-PE6-018 |
| Yamaha | 93306-30401 |
| Honda | 96100-63040 |
| Daihatsu | 97100-06304 |
| Toyota | 97100-06304 |
| Rover | 97H555 |
| Fiat | 9912638 |
| Iveco / Magirus | 9912638 |
| Volvo | 6600049 |
| Steyr-Daimler-Puch | 994010035 |
| Fiat | 09422 |
| Mazda | 9960-66-304 |
| Mazda | 9960-66-3040 |
| MAN | 00.2341.6304 |
| Isuzu | 0000-6304 |
| MAN | 06.31420.3400 |
| Steyr-Daimler-Puch | 0635333006 |
| Fiat | 64466 |
| FORD | A720X1238EA |
| White Motor | A7219 |
| Rover | JA5192 |
| Talbot | K1799 |
| Piaggio | M12 |
| Panther Car Company | M627 |
| Volkswagen | M7246 |
| Volkswagen | M7249/3 |
| Mitsubishi | MD550045 |
| Mitsubishi | MD700779 |
| Mitsubishi | MS550045 |
| Tatra | N-200 |
| Volkswagen | N25140 |
| Volkswagen | N25140.1 |
| Fiat | N301/5 |
| Rover | P101/117 |
| Volvo | 7011022 |
| Piaggio | S7080 |
| Talbot | 9188003 |
| Talbot | 9188006 |
| Rover | A2539 |
| Unic Truck | 99053 |
| Nissan | 6U401-201 |
| FORD | 99B10094 |
| Motom | N/1116 |
| Honda | 91052-634-004 |
| Honda | 91104-657-003 |
| Borgward / Lloyd Motorenwerke | 9120100200 |
| Skoda | 960-630406 |
| Rover | ACF4000 |
| Rover | GHB176 |
| Rover | JA2192 |
| Talbot | Z659 |
| NTN | 6304 (NTN) |
