Machine Design

Tiny, turntable bearings

With designers looking for compact bearings for turntable applications such as positioning and inspection tables or radar antenna mounts, Kaydon Bearings Div., Muskegon, Mich., designed the Real-Slim TT Series of thinsection bearings.

With designers looking for compact bearings for turntable applications such as positioning and inspection tables or radar antenna mounts, Kaydon Bearings Div., Muskegon, Mich. (kaydon.com), designed the Real-Slim TT Series of thinsection bearings. Bores range from 1.5 to 6 in., and the units are 0.25-in. tall. They feature an extended radial-bearing section that increases rigidity. Optional preloads and clearances can be ordered to meet torque and deflection requirements. They also have steel races and steel-reinforced seals, letting the bearings withstand harsh operating environments.

The bearings use a single fourpointcontact-ball radial design with a single row of balls and a gothic-arch raceway. One-piece separators reduce friction, and the thin-section bearings can be equipped with internal or external spur gears. Bearings are cleaned and packaged in a Class-10,000 clean room, and up to Class-100 clean-room standards are available.

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