G-Series Engine Bearing 12x28x8mm K603406001 for Zenoah G200,G231,G240,G260,G270,G290  [K603406001]

12x28x8mm Ball Bearing for Small Zenoah Engines

This Zenoah K603406001 is a 12x28x8mm steel ball bearing designed for use in RC engine rotating assemblies. It fits the G-series engine models listed in the title and acts as a direct replacement to restore smooth rotation and reduce friction where worn bearings affect engine behavior.

Installation notes: remove the old bearing carefully to keep debris out of the crankcase or gearbox, press the new bearing straight into its seating bore without tilting, and verify shaft alignment before final assembly. Use a small amount of an RC-appropriate lubricant on the rolling elements during reassembly for an easier initial break-in.

Tuning and maintenance role: replacing a worn 12x28x8mm bearing maintains consistent rotational balance in small Zenoah engines, lowers frictional heat under load, and helps prevent accelerated wear on nearby seals and shafts when fitted correctly.