Industrial Disc Brake
47Pages

INDUSTRIAL DISC BRAKES A D V A N C E D B R A K I N G T E C H N O L O G Y PRODUCT BROCHURE

Twiflex Limited, with headquarters in Twickenham, England, specialise in the design, manufacture and supply of Advanced Braking Technology for Industrial Applications. With extensive in-house design, engineering, manufacturing and assembly facilities, Twiflex have a well-deserved reputation for quality and precision. Founded in 1946, Twiflex have supplied approximately 500,000 brakes, frequently for critical applications, around the World. From textile machines in Bolton to the World's deepest mine shaft in South Africa, Twiflex brakes enjoy a premier status amongst Engineers and Operators...

1 APPLICATIONS BRAKE SYSTEM OVERVIEW BRAKE CALIPER RANGE MU Series MS Series MR Series MX Series GMX Series GMR Series Modular Series DISC AND HUB ASSEMBLIES PNEUMATIC CONTROLLERS INTENSIFIERS MONITOR UNITS HYDRAULIC POWER UNITS BRAKING CALCULATIONS c o n t e n t s 2 4 6 8 11 15 20 25 28 35 36 37 38 39 40 1 2 3 4 5 6 7 8 9 In accordance with our policy of continual product improvement we reserve the right to amend the specification of any Twiflex product without prior notification. All dimensions are nominal

2 1 Applications Disc brakes are used on conveyors for four main reasons: An emergency stop For normal stopping and parking Where one conveyor feeds another and there is a risk of over spill Wherever there exists a risk of personal injury particularly under ground The brakes may be fitted to the tail drum, driving drum or motor shaft, but with long over ground conveyors, Twiflex recommend that the brake is fitted to the up stream end to prevent a catapult effect due to reversal of belt tension. Twiflex has developed brake controllers ranging from simple on/off to the more sophisticated...

3 Twiflex brakes are fitted to the main propulsion system for three main reasons: Maintenance purposes, particularly while under way To assist and improve manoeuvrability Safety: the ability to stop the propellers turning in a very short time The brake is usually mounted on the gearbox output flange, particularly when reversing gears are fitted, often in conjunction with Twiflex air start clutches and flexible couplings. Twiflex brakes are used on Naval ships around the world, in particular the Royal Navy, and by many tug and merchant fleet operators. Twiflex disc brakes are designed to...

4 2 Brake system overview Brake calipers Twiflex manufacture and supply a large range of discs and mounting hubs. These can be supplied pilot bored or fully machined to suit your mounting arrangements. Discs can be supplied to fit shaft couplings. Twiflex can also supply special discs for specific applications, examples include a split disc for marine applications. Twiflex offer the largest range of industrial disc brake calipers in the world. The majority of direct acting brake calipers are fitted with a retraction device. The spring applied brakes are retracted by pneumatic or hydraulic...

5 Pneumatic controllers Twiflex offer a range of controllers and interfacing devices that allow pneumatic brake calipers to be connected to an air supply and interface with a control system. We also offer tension controllers that provide a well-proven and economic method of web tension control for the paper, textile, plastics and steel strip industries. Hydraulic power units Twiflex offer several types of electro-hydraulic power units. These units require careful selection since pressure and capacity must be compatible with both the type and number of calipers employed. The LC range of...

3 6 Brake caliper range MU s e r i e s Maximum Pressure 7 bar Maximum Braking Force = 0.72kN@ 7 bar Weight of caliper and thruster - 0.8kg Weight of thruster only – 0.05kg Volume displacement of thruster at 6mm stroke = 4ml MU Disc brake caliper DS2500 Maximum Pressure 5 bar Maximum Braking Force = 2.75kN@ 5 bar Weight of caliper and thruster - 1.9kg Weight of thruster only – 1.15kg Volume displacement of thruster at 13mm stroke = 46ml The ‘MU’ series of disc brake calipers is the smallest in the Twiflex range and is designed for light duty stopping and holding duties. Left or right hand...

7 MU s e r i e s MUS2 Spring applied – Pneumatically released MUS3 Spring applied – Pneumatically released MUS4 Spring applied – Pneumatically released MUH Mechanically applied – Hand operated Maximum Pressure = 7bar Minimum Pressure for full retraction = 4.3bar Maximum Braking Force = 0.6kN Weight of caliper and thruster – 1.36kg Weight of thruster only – 0.61kg Volume displacement of thruster at full retraction = 20ml 150 200 250 300 350 400 460 515 0 1 32 3 Disc Diameter mm Braking Torque Nm Air Pressure – bar 0 25 50 75 100 125 150 Maximum Pressure = 7bar Minimum Pressure for full...

3 8 Brake caliper range MS s e r i e s 216 135 73 73 ø120 165 Maximum Pressure 7 bar Maximum Braking Force = 1.44kN @ 7 bar Weight of caliper and thruster - 2.6kg Weight thruster only - 0.9g Volume displacement of thruster at full stroke = 150ml MS Disc brake caliper DS2500 Maximum Pressure 7 bar Maximum Braking Force = 2.76kN @ 7 bar Weight of caliper and thruster - 3.8kg Weight of thruster only - 2.1kg Volume displacement of thruster at full stroke = 300ml The Twiflex MS disc brake calipers are used with brake discs 12.7mm thick.They may be used with the majority of Twiflex actuators. The...

9 MS s e r i e s MSE Pneumatically applied – Spring released MSG Pneumatically applied – Spring released MSF Mechanically applied – Lever operated Maximum Pressure 7 bar Maximum Braking Force = 0.29kN @ 7 bar Weight of caliper and thruster - 2.08kg Weight of thruster only - 0.41kg Volume displacement of thruster at full stroke = 8ml 250 300 350 400 460 515 610 7 6 5 4 3 2 1 0 Disc Diameter mm Braking Torque Nm Air Pressure – bar 0 10 20 30 40 50 60 70 80 90 Maximum Pressure 7 bar Maximum Braking Force = 0.76kN @ 7 bar Weight of caliper and thruster - 2.06kg Weight of thruster only - 0.39kg...