| Part Number | S691 |
| System of Measurement | Metric |
| Bearing Type | Ball |
| For Load Direction | Radial |
| Construction | Single Row |
| Inner Ring Type | Standard |
| Seal Type | Open |
| Bore Dia | 1 mm |
| Bore Dia Tolerance | -0.008mm to 0 |
| Outer Dia | 4 mm |
| Outer Dia Tolerance | -0.008mm to 0 |
| Width | 1.6 mm |
| Width Tolerance | -0.12mm to 0 |
| Ring Material | Stainless Steel |
| Ball Material | Stainless Steel |
| Cage Material | Stainless Steel |
| Dynamic Radial Load | 24 lbf |
| Static Radial Load | 6 lbf |
| Max Speed (X1000 rpm) | 90 |
| Lubrication | Required |
| Shaft Mount Type | Press Fit |
| Temperature Range | -30° to 110 °C |
| ABEC Rating | ABEC1 |
| Radial Clearance Trade No | MC3 |
| Radial Clearance | 0.002mm to 0.013mm |
| RoHS | Compliant |
| REACH | Compliant |
| Ball Dia | 0.8000 mm |
| Ball Qty | 5 |
| Weight | 0.11 g |
