The Arrowmax AM-200108 6x12x4mm bearings are built to keep rotations smooth on axles, diff shafts and motor spindles. The rubber seals lock in lubricant while keeping dust and debris out, which is useful on dusty tracks.
These bearings suit many common RC mounting points and are a handy spare for club meets or weekend bashing. Their small footprint reduces friction on fast-spinning components.
Sealed units like the Arrowmax AM-200108 limit contamination so they need less frequent attention. Clean external grime and use a light bearing oil if rotation slows, avoiding solvents that can damage the seal.
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