2304S NTN 20x52x21mm Bore Diameter 20mm Self aligning ball bearings
| rs min | 1.1 mm |
| e | 0.5 |
| Y1 | 1.2 |
| Y2 | 1.9 |
| Y0 | 1.3 |
| Radial clearance class | CN |
| Precision class | P0 |
| Mass | 0.19 kg |
| Dynamic load, C | 18.5 kN |
| Static load, C0 | 4.7 kN |
| Nlim (oil) | 14.000 rpm |
| Nlim (grease) | 11.000 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| da min | 26.5 mm |
| Da max | 45.5 mm |
| ra max | 1 mm |
| Bearing number | 2304S |
| Size (mm) | 20x52x21 |
| Brand | NTN |
| 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. | 26.5 mm |
| Da max. | 45.5 mm |
| ra max. | 1 mm |
| Weight | 0.193 Kg |
| Basic dynamic load rating (C) | 18.5 kN |
| Basic static load rating (C0) | 4.7 kN |
| (Grease) Lubrication Speed | 11 000 r/min |
| (Oil) Lubrication Speed | 14 000 r/min |
| Calculation factor (e) | 0.5 |
| Calculation factor (Y0) | 1.3 |
| Calculation factor (Y1) | 1.2 |
Detailed Parameters
parameter：
| UKT317H Bearing units | B1:82 mm ，A5:48 mm ，A2:64 mm ，d1:110 mm |
| 6810 Deep groove ball bearings | Outer Diameter :65mm ，Size :50x65x7mm ，Bore Diameter :50mm ，Brand:KOYO |
| 7018 CD/HCP4AH1 Angular contact ball bearings | Brand:SKF ，Size :90x140x24mm ，Width :24mm ，Outer Diameter :140mm ，Bore Diameter :90mm |
| H71918AC Angular contact ball bearings | Width :18mm ，Brand:AST ，Outer Diameter :125mm ，Bore Diameter :90mm ，Size :90x125x18mm |
| 22338-K-MB+AH2338G Spherical roller bearings | Outer Diameter :400mm ，Bore Diameter :190mm ，Brand:FAG ，Width :132mm ，Size :190x400x132mm |
| NF38/950 Cylindrical roller bearings | Width :150mm ，d:950 mm ，Size :950x1150x150mm ，Outer Diameter :1150mm ，Brand:ISO ，Bore Diameter :950mm |
| KBL25112 Linear bearings | Brand:NBS ，Outer Diameter :40mm ，d:25 mm ，D:40 mm ，Bore Diameter :25mm |
| 21318-E1-K Spherical roller bearings | Outer Diameter :190mm ，Size :90x190x43mm ，Brand:FAG ，Bore Diameter :90mm |
| 6311/HC5C3 Deep groove ball bearings | Bore Diameter :120mm ，Size :120x55x29mm ，Width :29mm ，Brand:SKF ，d:55 mm ，Outer Diameter :55mm |
| 6213-2RS Deep groove ball bearings | Brand:Fersa ，Width :23mm ，Size :65x120x23mm ，d:65 mm ，Outer Diameter :120mm ，Bore Diameter :65mm |
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