Eaton airflex equivalent dalin 20vc1000 clutch that is ventilated constriction clutch is designed to withstand brake and clutch applications where large inertia loads and sustained slippage would mormally result in loss of torque and reduced operating life. The torque is transmitted by torque bar, not by the sidewalls of the actuating tube, the tube is loose and contained within the housing which is formed by a rim and two side plates, which are replaceable .The torque bar are held in position by the side plates which cross through the cavities of the aluminus brake shoes.Pressurizing the air tube forces the brake shoe to engage around a cylindrical drum.The release springs in the torque bar cavities of the brake shoes retract the brake shoe when the actuating tube pressure has been released. Size:14vc1000, 16vc1000, 20vc100, 24vc1000, 28vc1000, 32vc1000, 38vc1200, 42vc1200, 46vc1200, 52vc1200, 51vc1600, 66vc1600, 76vc1600