Tamiya 42109 - 840 Off-Road Flanged Bearings Pair  [42109]

Tamiya 42109 - 840 sealed flanged ball bearings overview

These compact flanged bearings are targeted at modelers who want dependable rotation with minimal hassle. They balance durability and smoothness for everyday running and light competition.

Sized for low friction

The bearings measure 8mm outer diameter, 4mm inner diameter, and 3mm width, a common compact format that reduces contact resistance and supports steady wheel and gear movement.

Use cases and retention benefits

The flange helps lock the bearing in place inside hubs and bulkheads, decreasing the chance of axial movement during rough running. They suit upgrades, repairs, and routine service in a wide range of RC models.