| Product Number | 639 Bearing |
| metering system | Metric system |
| Bearing type | ball |
| load direction | Radial |
| structure | single column |
| Inner ring type | Standard type |
| Seal type | open |
| inside diameter | 9 mm |
| Inner diameter tolerance | -0.008mm to 0 |
| outer diameter | 30 mm |
| outer diameter tolerance | -0.008mm to 0 |
| width | 10 mm |
| Width Tolerance | -0.12mm to 0 |
| ferrule material | 52100 chrome steel |
| ball material | 52100 chrome steel |
| cage material | 300 series stainless steel |
| dynamic radial load | 891 lbf |
| static radial load | 374.4 lbf |
| Maximum speed | 24 |
| lubricant | Lubricated |
| installation method | push-in |
| temperature range | -30° to 110°C |
| ABEC grade | ABEC1 (ABEC3/5/7 optional) |
| Radial clearance class | MC3 (available in MC1/2/4/5/6) |
| Clearance range | 0.002mm to 0.013mm |
| RoHS | conform to |
| REACH | conform to |
| Ball diameter | 4.7620 mm |
| number of balls | 7 |
| weight | 36.2g |
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