2304-2RS KOYO 20x52x21mm r min. 1.1 mm Self aligning ball bearings
| Bearing number | 2304-2RS |
| Size (mm) | 20x52x21 |
| Brand | KOYO |
| Bore Diameter (mm) | 20 |
| Outer Diameter (mm) | 52 |
| Width (mm) | 21 |
| d | 20 mm |
| D | 52 mm |
| B | 21 mm |
| C | 21 mm |
| r min. | 1.1 mm |
| da min. | 26.2 mm |
| da max | 26.2 mm |
| Da max. | 45 mm |
| ra max. | 1 mm |
| Weight | 0.209 Kg |
| Basic dynamic load rating (C) | 12.4 kN |
| Basic static load rating (C0) | 3.35 kN |
| (Grease) Lubrication Speed | 8300 r/min |
| Calculation factor (e) | 0.30 |
| Calculation factor (Y0) | 2.22 |
| Calculation factor (Y1) | 2.12 |
Detailed Parameters
parameter：
| 51276F Thrust ball bearings | Bore Diameter :380mm ，Outer Diameter :520mm ，Width :112mm ，Brand:SKF ，Size :380x520x112mm |
| 1210 Self aligning ball bearings | Brand:NACHI ，Bore Diameter :50mm ，Outer Diameter :90mm ，Size :50x90x20mm |
| GEC320HC Plain bearings | Width :160mm ，Bore Diameter :320mm ，Brand:LS ，Outer Diameter :440mm ，Size :320x440x160mm |
| FY 2.7/16 LF/AH Bearing units | Size :61.912x52x17mm ，Outer Diameter :52mm ，Brand:SKF ，Width :17mm ，d:61.912 mm ，Bore Diameter :61.912mm |
| 1206 K Self aligning ball bearings | Size :30x62x16mm ，Width :16mm ，Brand:NSK ，Outer Diameter :62mm ，d:30 mm ，Bore Diameter :30mm |
| NU311E Cylindrical roller bearings | Brand:NTN ，Bore Diameter :55mm ，Outer Diameter :120mm ，Width :29mm ，Size :55x120x29mm |
| 30309DJR Tapered roller bearings | Brand:KOYO ，Outer Diameter :100mm ，Bore Diameter :45mm ，Size :45x100x27.25mm ，d:45 mm ，Width :27.25mm |
| UCTU313-900 Bearing units | T1:190 mm ，Brand:KOYO ，Bore Diameter :65mm ，d:65 mm ，Width :75mm |
| 6301 Deep groove ball bearings | Size :12x37x12mm ，Brand:FAG ，Outer Diameter :37mm ，d:12 mm ，Bore Diameter :12mm ，Width :12mm |
| S7002 ACD/P4A Angular contact ball bearings | Outer Diameter :15mm ，Size :32x15x9mm ，Brand:SKF ，Bore Diameter :32mm |
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