| Bearing number | 638ZZ |
| Size (mm) | 8x28x9 |
| Bore Diameter (mm) | 8,000 |
| Outer Diameter (mm) | 28,000 |
| Width (mm) | 9,000 |
| d | 8,000 mm |
| D | 28,000 mm |
| B | 9,000 mm |
| C | 9,000 mm |
| Category | Single Row Ball Bearing |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Product Group | B00308 |
| Enclosure | 2 Metal Shields |
| Precision Class | ABEC 1 | ISO P0 |
| Maximum Capacity / Filling Slot | No |
| Rolling Element | Ball Bearing |
| Snap Ring | No |
| Internal Special Features | No |
| Cage Material | Steel |
| Internal Clearance | C0-Medium |
| Inch - Metric | Metric |
| Long Description | 8MM Bore; 28MM Outside Diameter; 9MM Outer Race Width; 2 Metal Shields; Ball Bearing; ABEC 1 | ISO P0; No Filling Slot; No Snap Ring; No Internal Special Features; C0-Medium Internal Clearance; Steel |
| Other Features | Deep Groove | Shell Alvania Prelubricated |
| UNSPSC | 31171504 |
| Harmonized Tariff Code | 8482.10.50.68 |
| Noun | Bearing |
| Keyword String | Ball |
| Outside Diameter | 1.102 Inch | 28 Millimeter |
| Inner Race Width | 0 Inch | 0 Millimeter |
| Outer Race Width | 0.354 Inch | 9 Millimeter |
| Bore | 0.315 Inch | 8 Millimeter |
