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    • Bearings

    A record player’s bearings help to isolate the player’s inner workings from load related stress. Typically ball bearings, they can handle both radial and thrust loads. A turntable bearing and motor system has a single ball thrust bearing in the spindle and a second radial bearing which is vibration-isolated from the bearing housing and turntable by resilient material. In a ball bearing, the load is transmitted from the outer race to the ball, and from the ball to the inner race. Since the ball is a sphere, it only contacts the inner and outer race at a very small point, which helps it spin very smoothly. But it also means that there is not very much contact area holding that load, so if the bearing is overloaded, the balls can deform or squish, ruining the bearing.

    There are numerous manufacturers of record player ball bearings. These are typically the same companies that produce the record player in which the bearings operate. Examples include Rega, Roksan, Thorens, and T+A.
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