W639/2.5-2ZS SKF D2 0.15 mm 2.5x7x3.5mm Deep groove ball bearings
| Bearing number | W639/2.5-2ZS |
| Size (mm) | 2.5x7x3.5 |
| Brand | SKF |
| Bore Diameter (mm) | 2.5 |
| Outer Diameter (mm) | 7 |
| Width (mm) | 3.5 |
| d | 2.5 mm |
| D | 7 mm |
| B | 3.5 mm |
| C | 3.5 mm |
| d1 | 3.8 mm |
| d2 | – mm |
| r1 min. | 3.7 mm |
| r2 min. | 3.7 mm |
| D1 | 6.2 mm |
| D2 | 0.15 mm |
| da min. | 3.8 mm |
| Da max. | 6.2 mm |
| ra max. | 0.15 mm |
| Weight | 0.00055 Kg |
| Basic dynamic load rating (C) | 0.221 kN |
| Basic static load rating (C0) | 0.067 kN |
| Fatigue load limit (Pu) | 0.003 |
| Reference speed | 160000 r/min |
| Limiting speed | 80000 r/min |
| Calculation factor (f0) | 6.6 |
Detailed Parameters
parameter：
| 89440 Thrust roller bearings | Outer Diameter :400mm ，Brand:CX ，d:200 mm ，Bore Diameter :200mm |
| NJ411 Cylindrical roller bearings | Brand:FBJ ，Outer Diameter :140mm ，Bore Diameter :55mm ，Size :55x140x33mm |
| 02878/02820 Tapered roller bearings | Brand:Timken ，Outer Diameter :73.025mm ，Size :34.925x73.025x22.225mm ，Bore Diameter :34.925mm |
| RAX 460 Complex bearings | Width :28mm ，Fw:60 mm ，Size :60x72x28mm ，Bore Diameter :60mm ，Brand:KOYO ，Outer Diameter :72mm |
| 15125/15250X Tapered roller bearings | Outer Diameter :63.5mm ，Width :20.6375mm ，Bore Diameter :31.75mm ，Brand:AST |
| GE 120 ESX-2LS Plain bearings | Bore Diameter :120mm ，Size :120x180x85mm ，Outer Diameter :180mm ，Brand:SKF |
| 6236Z Deep groove ball bearings | Bore Diameter :180.000mm ，Outer Diameter :320.000mm ，Size :180x320x52mm ，Brand:NTN |
| 410TVL718 Angular contact ball bearings | Outer Diameter :1260.475mm ，Width :127mm ，Size :1041.4x1260.475x127mm ，Bore Diameter :1041.4mm ，Brand:Timken |
| 80033X/80066X Tapered roller bearings | Brand:Gamet ，d:33.338 mm ，Outer Diameter :66.675mm ，Bore Diameter :33.338mm ，Size :33.338x66.675x20.63mm ，Width :20.63mm |
| 7913C Angular contact ball bearings | Brand:NTN ，Outer Diameter :90mm ，Width :13mm ，Bore Diameter :65mm ，d:65 mm ，Size :65x90x13mm |
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