2304K NACHI 20x52x21mm Width 21mm Self aligning ball bearings
| Bearing number | 2304K |
| Size (mm) | 20x52x21 |
| Brand | NACHI |
| Bore Diameter (mm) | 20 |
| Outer Diameter (mm) | 52 |
| Width (mm) | 21 |
| d | 20 mm |
| D | 52 mm |
| B | 21 mm |
| C | 21 mm |
| r1 min. | 1.1 mm |
| da min. | 26.5 mm |
| Da max. | 45.5 mm |
| ra max. | 1.0 mm |
| Weight | 0.209 Kg |
| Basic dynamic load rating (C) | 18 kN |
| Basic static load rating (C0) | 4.7 kN |
| (Grease) Lubrication Speed | 11000 r/min |
| (Oil) Lubrication Speed | 14000 r/min |
| Calculation factor (e) | 0.49 |
| Calculation factor (Y0) | 1.35 |
| Calculation factor (Y1) | 1.29 |
Detailed Parameters
parameter：
| W 63805 Deep groove ball bearings | Bore Diameter :37mm ，Size :37x25x10mm ，Outer Diameter :25mm ，Width :10mm ，Brand:SKF |
| NUP 2307 Cylindrical roller bearings | Width :31mm ，Bore Diameter :35mm ，d:35 mm ，Size :35x80x31mm ，Brand:SIGMA ，Outer Diameter :80mm |
| NNF5030PP Cylindrical roller bearings | d:155 mm ，Width :100mm ，Outer Diameter :225mm ，Brand:ZEN ，Size :155x225x100mm ，Bore Diameter :155mm |
| 7905UG/GHP4/15KQTQ Angular contact ball bearings | Outer Diameter :42mm ，Bore Diameter :25mm ，Size :25x42x9mm ，Brand:NTN |
| 7216AC Angular contact ball bearings | Size :80x140x26mm ，Width :26mm ，Brand:NACHI ，Bore Diameter :80mm ，Outer Diameter :140mm |
| 5S-2LA-HSE016CG/GNP42 Angular contact ball bearings | Size :80x125x22mm ，Bore Diameter :80mm ，Width :22mm ，Brand:NTN ，Outer Diameter :125mm |
| 4T-32010X Tapered roller bearings | r1s min:1 mm ，rs min:1 mm ，Y2:1.42 ，d1:65.5 mm ，e:0.42 |
| VKBA 3541 Wheel bearings | Designation SX:CX456 ，Brand:SKF ，Designation FAG:713606290 ，Designation SNR:R160.27 |
| CRF-39590/39520 A Wheel bearings | Bore Diameter :66.675mm ，Outer Diameter :112.712mm ，Brand:CRAFT ，Size :66.675x112.712x30.162mm ，Width :30.162mm |
| 635 Deep groove ball bearings | Size :5x19x6mm ，Bore Diameter :5mm ，Outer Diameter :19mm ，Brand:ISB |
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