SB 23 Disc brake with an automatic wear compensator and self-centering device. Brake torque range: 935 - 3520 Nm Application: Main Hoist Boom Hoist Trolley Advantages: Low maintenance caused by self centering Automatic we......SB 23 Disc brake with an automatic wear compensator and self-centering device. Brake torque range: 935 - 3520 Nm Application: Main Hoist Boom Hoist Trolley Advantages: Low maintenance caused by self centering Automatic wear compensator Symmetric design Compact construction Technical data: Adjustable brake torque Brake torque 935-3520 Nm Brake disc diameter 355-630 mm Weight 125 kg .