Spring actuated actuators mount on either side of the brake. Hydraulic connections can be rotated 360 deg around actuator axis. Shoes are mounted with detent pins for quick replacement. SPC shoes fit on BD Model caliper brakes for longer life and higher peak input rate. All pivot points have life lubricated bearings. Optional discs from 12 to 24 in Dia. Disc speeds up to 3200 RPM with 14 in discs. QD bushing compatible, for shaft sizes up to 3-7/8 in. Nexen® Air Champ® Caliper Brake, Spring Actuated Hydraulic Released Open Standard Coefficient, 21698 in-lb Static Torque, 1500 psi Maximum, 32 to 150 °F, 16.8 in L x 12.55 in H Dimensions