Model Numbers: 638, B638ZZ, 638ZZ
Brands Carried: MISUMI, NSK, EZO
Bearing Sizing: ID 8mm X OD 28mm X W 9mm, 8 mm Ball Bearing
Bearing Seals: Open, Double Shielded
For more 638 ball bearings and seal options — we have hundreds visit MISUMI.
Select Part Numbers to Buy 638 Ball Bearings
| Bearing Seals | MISUMI | NSK | EZO (SPB-USA) |
|---|---|---|---|
| Open Type | – | – | 638 |
| Single Shielded | – | – | – |
| Double Shielded | B638ZZ | 638ZZ | 638ZZ |
| Rubber Sealed | – | – | – |
Please select between the four options above:
Open Type:
638 Ball Bearing
638 Ball Bearing
Single Shielded:
Double Shielded:
B638ZZ Ball Bearing
638ZZ Ball Bearing
B638ZZ Ball Bearing
638ZZ Ball Bearing
Rubber Sealed:
Miniature Ball Bearings 638 – 8X28X9mm Description
The 638 is a 8 mm Ball Bearing that can be used in many rotary and factory automation applications. The 638 Miniature Ball Bearings is an open style bearing. The 638ZZ ball bearing has a single row raceway and it is shielded on each side. The 638 8 mm Ball Bearing Inner Dimension 8mm X Outer Dimension 28mm X Width 9mm is an open style ball bearing designed for high rotational speeds and high dynamic loads.
638 Ball Bearings 8X28X9mm Specifications & Dimensions
| Universal | 638 |
|---|---|
| Type | Ball |
| Inner/Outer Ring Material | Steel |
| Precision | Grade 0 |
| Inner Dimension d(Ø) | 8 |
| Outer Dimension D(Ø) | 28 |
| Width B (or T)(mm) | 9 |
| Retainer Type | Punching |
| Load Direction | Radial |
| Specifications/Environment | Standard |
| Number of Raceway Ring Rows | Single Track |
| Size Standards | Metric Series |
Miniature Ball Bearings 638 – Technical Specifications/Dimensions
Single Shielded Ball Bearings
Double Shielded Ball Bearings
Rubber Sealed Ball Bearings
Other Ball Bearing Series
