Good upkeep starts with solid components. The Factory Pro FP-B-SB0509 steel ball bearings are 5x9x3mm and sold in a set of four, suitable for small shafts and tight mounting areas on a range of RC models.
Steel construction provides toughness against everyday loads and helps keep moving parts turning with less resistance. They are a straightforward option for lowering drag in rolling and gear systems without complex modifications.
These bearings fit many common RC roles, from small wheel hubs to gearbox outputs. They are handy for hobbyists who want a compact, robust bearing for routine repairs or upgrades.
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