
Model Numbers: B603, 603, B603ZZ, 603ZZ
Brands Carried: MISUMI, NSK, NTN, EZO
Bearing Sizing: ID 3mm X OD 9mm X W 3mm, 3 mm Ball Bearing
Bearing Seals: Open, Double Shielded
For more 603 ball bearings and seal options — we have hundreds visit MISUMI.
Select Part Numbers to Buy 603 Ball Bearings
| Bearing Seals | MISUMI | NSK | NTN | EZO (SPB-USA) |
|---|---|---|---|---|
| Open Type | B603 | – | 603 | 603 |
| Single Shielded | – | – | – | – |
| Double Shielded | B603ZZ | 603ZZ | 603ZZ | 603ZZ |
| Rubber Sealed | – | – | – | – |
Please select between the four options above:
Open Type:

B603 Ball Bearing
603 Ball Bearing

B603 Ball Bearing
603 Ball Bearing
Single Shielded:


Double Shielded:

B603ZZ Ball Bearing
603ZZ Ball Bearing

B603ZZ Ball Bearing
603ZZ Ball Bearing
Rubber Sealed:


Miniature Ball Bearings 603 – 3X9X3mm Description
The 603 is a 3 mm Ball Bearing that can be used in many rotary and factory automation applications. The 603 Miniature Ball Bearings is an open style bearing. The 603ZZ ball bearing has a single row raceway and it is shielded on each side. The 603 3 mm Ball Bearing Inner Dimension 3mm X Outer Dimension 9mm X Width 3mm is an open style ball bearing designed for high rotational speeds and high dynamic loads.
603 Ball Bearings 3X9X3mm Specifications & Dimensions
| Universal | 603 |
|---|---|
| Type | Ball |
| Inner/Outer Ring Material | Steel |
| Precision | Grade 0 |
| Inner Dimension d(Ø) | 3 |
| Outer Dimension D(Ø) | 9 |
| Width B (or T)(mm) | 3 |
| Retainer Type | Punching |
| Load Direction | Radial |
| Specifications/Environment | Standard |
| Number of Raceway Ring Rows | Single Track |
| Size Standards | Metric Series |

Miniature Ball Bearings 603 – Technical Specifications/Dimensions
Single Shielded Ball Bearings
Double Shielded Ball Bearings
Rubber Sealed Ball Bearings
Other Ball Bearing Series

