WBB1-8710 SKF 21x15x3.5mm Basic static load rating C0 0.29 kN Deep groove ball bearings
| Bearing number | WBB1-8710 |
| Size (mm) | 21x15x3.5 |
| Brand | SKF |
| Bore Diameter (mm) | 21 |
| Outer Diameter (mm) | 15 |
| Width (mm) | 3.5 |
| d | 15 mm |
| D | 21 mm |
| B | 3.5 mm |
| d1 | 16.9 mm |
| D1 | 19.1 mm |
| r1,2 – min. | 0.15 mm |
| da – min. | 16 mm |
| da – max. | 16.5 mm |
| Da – max. | 20 mm |
| ra – max. | 0.15 mm |
| Basic dynamic load rating – C | 0.527 kN |
| Basic static load rating – C0 | 0.29 kN |
| Fatigue load limit – Pu | 0.012 kN |
| Reference speed | 67000 r/min |
| Limiting speed | 40000 r/min |
| Calculation factor – kr | 0.015 |
| Calculation factor – f0 | 8.4 |
| d1 ≈ | 16.9 mm |
| D1 ≈ | 19.1 mm |
| r1,2 min. | 0.15 mm |
| da min. | 16 mm |
| Da max. | 20 mm |
| ra max. | 0.15 mm |
| Basic dynamic load rating C | 0.527 kN |
| Basic static load rating C0 | 0.29 kN |
| Fatigue load limit Pu | 0.012 kN |
| Calculation factor kr | 0.015 |
| Calculation factor f0 | 8.4 |
| Mass bearing | 0.0031 kg |
Detailed Parameters
parameter：
| UKP318SC Bearing units | Brand:KOYO ，d:80 mm ，Width :118mm ，Bore Diameter :80mm |
| NA22040 Needle roller bearings | Bore Diameter :40mm ，Size :40x65x30mm ，Brand:Timken ，Width :30mm ，Outer Diameter :65mm |
| NU18/750 Cylindrical roller bearings | Brand:ISO ，Size :750x920x78mm ，Bore Diameter :750mm ，Outer Diameter :920mm |
| 6008L11ZZ Deep groove ball bearings | Brand:NSK ，Outer Diameter :68mm ，Bore Diameter :40mm ，Width :15mm ，d:40 mm ，Size :40x68x15mm |
| SL024914 Cylindrical roller bearings | Outer Diameter :91.87mm ，Bore Diameter :70mm ，Size :70x91.87x30mm ，Brand:NBS |
| NUPK2205S14NC3 Cylindrical roller bearings | Bore Diameter :25mm ，Width :20mm ，Outer Diameter :52mm ，Brand:NACHI ，Size :25x52x20mm ，d:25 mm |
| 618/8ZZ Deep groove ball bearings | Outer Diameter :16mm ，Bore Diameter :8mm ，Brand:CRAFT ，Size :8x16x4mm |
| 6214ZZ Deep groove ball bearings | Size :70x125x24mm ，Bore Diameter :70mm ，Brand:CRAFT ，Outer Diameter :125mm |
| NNCF4856V Cylindrical roller bearings | Size :280x332.5x69mm ，Bore Diameter :280mm ，Outer Diameter :332.5mm ，Brand:NSK ，Width :69mm |
| 53309 Thrust ball bearings | Bore Diameter :45mm ，Brand:NSK ，Outer Diameter :85mm ，Size :45x85x30.1mm |
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