12580/12520 KOYO C 15.875 mm 20.638×49.225×19.845mm Tapered roller bearings
| Bearing number | 12580/12520 |
| Size (mm) | 20.638×49.225×19.845 |
| Brand | KOYO |
| Bore Diameter (mm) | 20.638 |
| Outer Diameter (mm) | 49.225 |
| Width (mm) | 19.845 |
| d | 20.638 mm |
| D | 49.225 mm |
| T | 19.845 mm |
| B | 19.845 mm |
| C | 15.875 mm |
| a | 12.7 mm |
| r min. | 1.6 mm |
| r2 min. | 1.6 mm |
| da min. | 28.5 mm |
| Da | 42.5 mm |
| db min | 26 mm |
| ra max. | 1.6 mm |
| rb max. | 1.6 mm |
| Db | 45.5 mm |
| Weight | 0.183 Kg |
| Basic dynamic load rating (C) | 36.4 kN |
| Basic static load rating (C0) | 37.7 kN |
| (Grease) Lubrication Speed | 8600 r/min |
| (Oil) Lubrication Speed | 12000 r/min |
| Calculation factor (e) | 0.32 |
| Calculation factor (Y0) | 1.02 |
Detailed Parameters
parameter：
| TL22314EAKE4 Spherical roller bearings | Bore Diameter :70mm ，Size :70x150x51mm ，Outer Diameter :150mm ，Brand:NSK |
| ARZ 10 30 48 Needle roller bearings | Bore Diameter :30mm ，Brand:Timken ，Outer Diameter :48mm ，Width :10mm ，Size :30x48x10mm |
| 7004DT Angular contact ball bearings | Size :20x42x12mm ，Bore Diameter :20mm ，Outer Diameter :42mm ，Brand:NACHI |
| 22311 KVA Spherical roller bearings | Brand:ISB ，Width :43mm ，Size :55x120x43mm ，Bore Diameter :55mm ，Outer Diameter :120mm |
| NJ330 EMA Cylindrical roller bearings | Brand:AST ，Width :65mm ，Bore Diameter :150mm ，Size :150x320x65mm ，Outer Diameter :320mm |
| NU2216-E-TVP3 Cylindrical roller bearings | Bore Diameter :80mm ，Brand:NKE ，Size :80x140x33mm ，Outer Diameter :140mm |
| NNCF4932V Cylindrical roller bearings | Outer Diameter :204.1mm ，Brand:NSK ，Width :60mm ，Size :160x204.1x60mm ，Bore Diameter :160mm |
| UCFLE211 Bearing units | d:55 mm ，e:31 mm ，s:22.2 mm ，Brand:SNR ，Bore Diameter :55mm |
| 7212 Angular contact ball bearings | d:60 mm ，Outer Diameter :110mm ，Brand:NACHI ，Width :22mm ，Bore Diameter :60mm ，Size :60x110x22mm |
| GE100ES Plain bearings | Bore Diameter :100mm ，Brand:AST ，Outer Diameter :150mm ，Outer Dia (D):150.0000 ，Bearing Type:plain ，Bore Dia (d):100.0000 |
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