| model | W 637 |
| Metering system | Metric system |
| Bearing Type | Ball |
| Load Direction | Radial |
| Structure | Single Column |
| Seal Type | Open |
| Inside Diameter | 7 mm |
| Inner Diameter Tolerance | -0.008mm to 0 |
| Outer Diameter | 26 mm |
| Outer Diameter Tolerance | -0.009mm to 0 |
| Width | 9 mm |
| Width Tolerance | -0.12mm to 0 |
| Ferrule Material | Stainless steel |
| Ball Material | Stainless steel |
| Cage Material | 300 Series Stainless Steel |
| Dynamic Radial Load | 892 lbf |
| Static Radial Load | 441 lbf |
| Max Speed(X1000 rpm) | 40 |
| Lubricant | None |
| Temperature Range | -30° to 120 °C |
| ABEC Standard | P0 |
| Radial Inner Clearance | CN |
| RoHS Standard | Conform |
| REACH Standard | Conform |
| Weight | 0.023 kg |