Quick release mounting for a turntable bearing

A quick release mounting for a turntable bearing of a load handling device or the like comprising, in combination, upper works carried by a rotatable bed, arcuate plates fixedly secured to the bottom of the rotatable bed, a rotatable outer bearing race in engagement with the arcuate plates and providing support for the rotatable bed and upper works, a stationary inner bearing race fixed to a lower works and having gear teeth along its inner circumference, a rotatable pinion gear which engages said gear teeth, said outer bearing race being rotationally supported by the inner bearing race by ball bearings so that as the pinion gear rotates it causes the upper works to rotate along with the outer race relative to the inner race, an arcuate beam slidably mounted on the rotatable bed for engagement with the outer bearing race, means for moving the arcuate beam into and out of engagement with the outer race, a clamping latch pivotably mounted on the rotatable bed so that its one end engages the outer bearing race on the side of the outer race diametrically opposite the arcuate beam, said arcuate beam and clamping latch providing engagement with the outer race to counteract tipping moments of the upper works while at the same time providing for quick engagement and disengagement with the outer race.