W618/4 SKF 4x9x2.5mm Calculation factor (f0) 6.5 Deep groove ball bearings
| Bearing number | W618/4 |
| Size (mm) | 4x9x2.5 |
| Brand | SKF |
| Bore Diameter (mm) | 4 |
| Outer Diameter (mm) | 9 |
| Width (mm) | 2.5 |
| d | 4 mm |
| D | 9 mm |
| B | 2.5 mm |
| C | 2.5 mm |
| d1 | 5.2 mm |
| d2 | – mm |
| r1 min. | 0.1 mm |
| r2 min. | 0.1 mm |
| D1 | 7.5 mm |
| D2 | – mm |
| da min. | 4.8 mm |
| Da max. | 8.2 mm |
| ra max. | 0.1 mm |
| Weight | 0.0006 Kg |
| Basic dynamic load rating (C) | 0.364 kN |
| Basic static load rating (C0) | 0.114 kN |
| Fatigue load limit (Pu) | 0.005 |
| Reference speed | 140000 r/min |
| Limiting speed | 85000 r/min |
| Calculation factor (f0) | 6.5 |
Detailed Parameters
parameter：
| 65BNR20HV1V Angular contact ball bearings | Bore Diameter :65mm ，Size :65x100x22mm ，Brand:NSK ，Outer Diameter :100mm ，d:65 mm ，Width :22mm |
| 6015ZENR Deep groove ball bearings | Width :20mm ，Size :75x115x20mm ，Brand:NACHI ，Outer Diameter :115mm ，Bore Diameter :75mm ，d:75 mm |
| K12X17X15SE Needle roller bearings | Brand:Timken ，Fw:12 mm ，Outer Diameter :17mm ，Bore Diameter :12mm ，Ew:17 mm |
| 71824 ACD/P4 Angular contact ball bearings | Size :150x120x16mm ，Bore Diameter :150mm ，Outer Diameter :120mm ，Brand:SKF |
| KHLFL201AJ Bearing units | A:18 mm ，Brand:NACHI ，Bore Diameter :12mm ，A0:31.6 mm ，d:12 mm ，A1:9.5 mm |
| EGB3240-E40 Plain bearings | Width :40mm ，Outer Diameter :36mm ，Brand:INA ，d:32 mm ，Size :32x36x40mm ，Bore Diameter :32mm |
| IJ131021 Angular contact ball bearings | d:45 mm ，Bore Diameter :45mm ，Outer Diameter :84mm ，Brand:ILJIN ，Size :45x84x39mm ，Width :39mm |
| ZARF50115-TV Complex bearings | Bore Diameter :50mm ，d:50 mm ，Outer Diameter :115mm ，Width :22.5mm ，Brand:INA ，Size :50x115x22.5mm |
| 7015CVUJ74 Angular contact ball bearings | rs min:1.1 mm ，D2:108.36 mm ，d1:87.8 mm ，a:23 mm ，D1:102.2 mm ，Contact angle α:15 ° |
| 30321 Tapered roller bearings | Bore Diameter :105mm ，Brand:CRAFT ，Outer Diameter :225mm ，Size :105x225x53.5mm |
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