Equipped with a lining wear compensator, the USB model provides a combination of spring and weight applied braking capabilities and was designed for smooth operation and minimal maintenance.

SIBRE USB Thruster Disc Brake Design Advantages

• Robust design with all bearings and pivot points fitted with close tolerance bushes.
• Pins made of rust and acid resistant stainless steel
• Optimized lever geometry resulting in maximum ratio and generous lining clearance
• Braking torque independent of disc rotating direction
• Square spring tube with graduated torque scale to facilitate torque adjustment
• Easily replaceable and low cost brake linings, asbestos free quality for high circumferential speed up to 85 m/sec. and max. disc temperature of up to 850°C
• Reduced maintenance by means of SIBRE-wear-compensator
• Equal clearance due to SIBRE-synchronisation linkage

SIBRE USB Thruster Disc Brake Design Characteristics

• Brake force increased by more than 70 % due to optimized position
• Increased utilization factor of available release force by means of springs with low c-rate
• Increased efficiency and life time of bushings due to centric application of spring force
• The knee lever provides the requested dead weight and forms an enclosure protecting the uppermost hinge points and the tension rod against dust and damages
• The SIBRE synchronization linkage, known since many years from the SIBRE drum brakes, was incorporated in this new disc brake and guarantees an equal and synchronous movement of brake arms. A manual adjustment of equal air-gap is no longer required.
• Lean and compact envelope dimensions
• No more right handed or left handed design

USB Thruster Disc Brake Torque Ratings

• USB2-05: 0 Nm – 610 Nm
• USB3-I: 390 Nm – 5020 Nm
• USB3-I-M: 370 Nm – 4000 Nm
• USB3-III: 2650 Nm – 31850 Nm
• USB-C 31: 390 Nm – 4830 Nm
• USB-C 32: 1400 Nm – 5500 Nm
• USB-C 33: 2450 Nm – 16900 Nm
• USB-C 53: 900 Nm – 23000 Nm

SIBRE USB Thruster Disc Brakes Data Sheets

• usb3-iii
• usb3-i
• usb3-i-m
• usb2-05
• sb-c-53 usb-c-33
• usb-c-32
• usb-c-31
• options-usb3
• lining-wear-compensator l
• imit-switches-and-manual-release