The Tamiya 42368 850 sealed ball bearings are aimed at improving rotational consistency and reducing friction in motion-critical parts. Hobbyists will find these useful for achieving steadier movement without complex servicing routines.
These 850 sealed bearings are suitable for locations such as the centre shaft in TRF420 and TA07MS platforms and various M-chassis gear spots. Upgrading from plastic or open bearings to rubber-sealed units usually improves alignment and rotation smoothness.
Rubber seals allow access for cleaning and relubrication, which is more convenient than sealed metal shields. After cleaning, a drop of low-friction oil helps preserve smooth operation and extends bearing life.
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