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A similar rotational bearing comprising a rotating arc or ring sliding in the groove of a stationary arc, used in machinery to allow a workpiece to be moved relative to a fixed tool.
A shaft, held by a bearing, at each end or side of a rotatable object.
1964 December, “Beyond the Channel: Belgium: Conveyance of molten iron”, in Modern Railways, page 432:
To discharge, the conveyor is rotated laterally on its trunnions and the metal flows into a ladle carried on a travelling crane, which conveys it to the converter.
A similar rotational bearing used in automotive suspensions.
