This Yokomo YOKBB850P 5x8x2.5mm Super Precision Bearing is a compact metal ball bearing intended for RC-scale rotating components. Its dimension set (5x8x2.5mm) matches common small shaft and hub fits used in electric touring, pan car, and micro-scale models where a low-profile precision bearing is required.
In practice this bearing serves as a drop-in option for shafts, idlers, and small gearbox outputs where consistent rolling performance reduces friction and heat. The neutral construction and tight tolerance help maintain predictable response under tuning changes to gearing and motor load.
Installation notes: press or gently tap the bearing into a matching bore using a sleeve that contacts the outer race only, avoid applying force to the inner race, and check axial play after seating. Regular light maintenance with appropriate bearing oil helps preserve smooth rotation in dustier outdoor use.
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