W638/3-2RS1 SKF da min. 3.8 mm 3x7x3mm Deep groove ball bearings
| Bearing number | W638/3-2RS1 |
| Size (mm) | 3x7x3 |
| Brand | SKF |
| Bore Diameter (mm) | 3 |
| Outer Diameter (mm) | 7 |
| Width (mm) | 3 |
| d | 3 mm |
| D | 7 mm |
| B | 3 mm |
| C | 3 mm |
| d1 | – mm |
| d2 | 3.8 mm |
| r1 min. | 3.7 mm |
| r2 min. | 3.7 mm |
| D1 | 6.4 mm |
| D2 | 0.1 mm |
| da min. | 3.8 mm |
| Da max. | 6.5 mm |
| ra max. | 0.1 mm |
| Weight | 0.0005 Kg |
| Basic dynamic load rating (C) | 0.178 kN |
| Basic static load rating (C0) | 0.057 kN |
| Fatigue load limit (Pu) | 0.002 |
| Reference speed | – r/min |
| Limiting speed | 45000 r/min |
| Calculation factor (f0) | 7.1 |
Detailed Parameters
parameter：
| RASEY2-7/16 Bearing units | Brand:INA ，A:64.999 mm ，S1:39.701 mm ，Bore Diameter :61.913mm ，d:61.913 mm ，Thread (Q):1/8 NPT |
| NF213E Cylindrical roller bearings | Size :65x120x23mm ，Outer Diameter :120.000mm ，Bore Diameter :65.000mm ，Brand:NTN ，Width :23.000mm |
| SA0060 Angular contact ball bearings | Brand:FAG ，d:43 mm ，Size :43x76x43mm ，Width :43mm ，Bore Diameter :43mm ，Outer Diameter :76mm |
| 7005CDF Angular contact ball bearings | Brand:NACHI ，Width :12mm ，Size :25x47x12mm ，Bore Diameter :25mm ，Outer Diameter :47mm |
| 3TM-DF05A11NC3PX1 Angular contact ball bearings | Width :27mm ，Bore Diameter :27mm ，Outer Diameter :60mm ，Brand:NTN ，d:27 mm ，Size :27x60x27mm |
| 413122 Tapered roller bearings | Bore Diameter :110mm ，Size :110x180x56mm ，Outer Diameter :180mm ，Brand:NTN |
| 250RU91 Cylindrical roller bearings | F:278 mm ，d:250 mm ，Brand:Timken ，Outer Diameter :383mm ，Bore Diameter :250mm |
| 6318ZNR Deep groove ball bearings | Brand:NACHI ，d:90 mm ，Size :90x190x43mm ，Bore Diameter :90mm ，Width :43mm ，Outer Diameter :190mm |
| RNAO 30x42x32 - ZW Needle roller bearings | Bearing number : RNAO 30x42x32:ZW ，Bore Diameter :30mm ，Brand:NBS ，Size :30x37x32mm |
| RE151917BL3 Needle roller bearings | Bore Diameter :15mm ，Outer Diameter :19mm ，Brand:KOYO ，Size :15x19x17.3mm |
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