W617/4X SKF 4x8x2mm Da max. 6.9 mm Deep groove ball bearings
| Bearing number | W617/4X |
| Size (mm) | 4x8x2 |
| Brand | SKF |
| Bore Diameter (mm) | 4 |
| Outer Diameter (mm) | 8 |
| Width (mm) | 2 |
| d | 4 mm |
| D | 8 mm |
| B | 2 mm |
| C | 2 mm |
| d1 | 5 mm |
| d2 | – mm |
| r1 min. | 0.15 mm |
| r2 min. | 0.15 mm |
| D1 | 6.8 mm |
| D2 | – mm |
| da min. | 4.9 mm |
| Da max. | 6.9 mm |
| ra max. | 0.15 mm |
| Weight | 0.0004 Kg |
| Basic dynamic load rating (C) | 0.225 kN |
| Basic static load rating (C0) | 0.072 kN |
| Fatigue load limit (Pu) | 0.003 |
| Reference speed | 150000 r/min |
| Limiting speed | 90000 r/min |
| Calculation factor (f0) | 7.2 |
Detailed Parameters
parameter：
| 3306 Angular contact ball bearings | Brand:CYSD ，d:30 mm ，Outer Diameter :72mm ，Size :30x72x30.2mm ，Bore Diameter :30mm ，Width :30.2mm |
| 7306BDT Angular contact ball bearings | Outer Diameter :72mm ，Bore Diameter :30mm ，Size :30x72x19mm ，Brand:NTN ，Width :19mm |
| NKS 35 Needle roller bearings | Brand:NBS ，Outer Diameter :50mm ，Width :22mm ，Bore Diameter :35mm ，Size :35x50x22mm |
| PNA 17/35 Needle roller bearings | d:17 mm ，Size :17x35x16mm ，Bore Diameter :17mm ，Outer Diameter :35mm ，Brand:NBS ，Width :16mm |
| 112044X/112085 Tapered roller bearings | Brand:Gamet ，Bore Diameter :44.45mm ，Size :44.45x85x20.63mm ，Outer Diameter :85mm |
| HK0306TN Needle roller bearings | Size :3x6.5x6mm ，Bore Diameter :3mm ，Brand:SKF ，Outer Diameter :6.5mm |
| GEG12E Plain bearings | Outer Diameter :26mm ，d:12 mm ，Bore Diameter :12mm ，Size :12x26x15mm ，Brand:LS ，Width :15mm |
| W637/9-2Z Deep groove ball bearings | Outer Diameter :14mm ，Width :4.5mm ，Bore Diameter :9mm ，Size :9x14x4.5mm ，Brand:SKF |
| GE100ET-2RS Plain bearings | Outer Dia (D):150.0000 ，Outer Diameter :150mm ，Brand:AST ，Bore Dia (d):100.0000 ，Bearing Type - single fracture:sealed ，Bore Diameter :100mm |
| GE100-KRRB Deep groove ball bearings | Brand:NKE ，Bore Diameter :100mm ，Outer Diameter :180mm ，Size :100x180x57.5mm |
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