MR105-2RS Ball Bearings 10 Pack, 4mm ID x 9mm OD

These MR105-2RS ball bearings are miniature deep groove bearings made from bearing steel with double rubber seals. They measure 4mm inner diameter by 9mm outer diameter and come in a 10-pack.

The double rubber seal design protects the bearing races and rolling elements from dust, moisture, and contamination. This makes them suitable for use in both clean and moderately harsh environments.

The bearings feature a low friction design that reduces energy loss during operation. This combination of protection and efficiency makes them well suited for high-speed applications where smooth, reliable performance is required.

These bearings are commonly used in skateboard wheels, inline skates, electric motors, and other small machinery where compact size and consistent rotational performance matter. Installation is straightforward, and the sealed design minimises maintenance requirements over their service life.

Check your application’s inner and outer diameter requirements before ordering to ensure these dimensions are the right fit for your equipment.