These Heavy Duty Swing Clamps swing into position then clamp straight down onto the workpiece for direct downward pressure. The arm swings completely out of the way to allow for easy loading and unloading of the workpiece. Ideal for repetitive clamping operations. The tapped end of the clamp arm allows for a clamping tip to be added. Mounts from the bottom with four mounting holes. Mounting bases are available that allow top side mounting. The body, cam and handle are made from 4140 alloy steel. The clamp arm is made from 1045 alloy steel. Parts are heat treated with a black oxide finish. The handle is made from black plastic.

To operate: load the workpiece, turn the adjustment knob to rotate and lower the clamp arm over the workpiece. Rotate the handle to apply full clamping force to the workpiece. The 400 series provide 786 lbs of clamping force, the 500 series provides 1,348 lbs of clamping force. Part numbers ending with R have a clockwise clamping direction, part numbers ending in L have a counter clockwise clamping direction.