Bestons are Australian distributors of industrial clutches and brakes from respected US company Eaton-Airflex. These quality parts are used throughout industry around the world. They can be found on all types of machinery - from equipment that mines raw materials to the machines that produce finished products.
Also see other transmission lines from Bestons:
Explore the ranges below and call Bestons today to discuss which product best suits your needs.
Eaton-Airflex CB clutch and brake assemblies are used in:
The type CB element assembly is designed and built to provide dependable clutch or brake service in the most exacting industrial applications. It is suited to high speed, cyclic operations, as well as for coupling and general power transmission.
Element torque capacity is dependent upon the applied pressure and rotating speed. Catalog ratings are given at 75 psi (5,2 bar) and zero rpm. Maximum recommended pressure is 110 psi (7,6 bar).
CB elements are available in 20 sizes which are identified by the drum diameter (in inches) on which they constrict and the width (in inches) of its friction lining. For instance, size 16CB500 is designed to constrict on a 16 inch (406 mm)diameter drum and has a friction lining width of 5 inches. The smallest CB element will constrict on a 3 inch (76 mm) diameter drum and the largest on a 45 inch (1143 mm) diameter drum.
Eaton-Airflex CM element assemblies were designed primarily for the marine industry for use on diesel driven reverse-reduction gears.
In addition to providing all of the CB element features, the CM's ventilated friction shoes permit clutch slippage at low energy rates during vessel maneuvering, as well as cycling engagements at high energy rates. Rim registering allows triple element assemblies.
The CM is used in applications where moderate slippage is encountered which would shorten the operating life of a CB element.
Torque capacities up to 3,236,000 Ib-in, 365.000 N-m.
Eaton-Airflex VC clutch and brake assemblies are used in:
The Eaton-Airflex type VC element assemblies are designed and built for severe clutching and braking applications on heavy duty equipment. They are unmatched for high starting loads and sustained slippage where heat generated tends to lower efficiency and shorten the operating life of conventional clutches.
Their high torque ratings permit use of smaller diameter units which lower contact velocity on high speed applications. Ventilated construction permits passage of cooling air, to rapidly dissipate heat from the friction shoes. Torque is transmitted from the side plates of the elements through torque bars to the friction shoes.
Torque capacities up to 15,189,000 Ib-in, 1.706.629 N-m.
Eaton-Airflex E clutch and brake assemblies are used in:
The type E elements are primarily used as slip clutches or tension brakes; however, they can also be used for general power transmission service. Torque is transmitted from the friction shoes to the element housing through torque bars. Engagement occurs when air expands the actuating tube forcing the friction shoes against the inside diameter of the drum. Release springs assist shoe disengagement and counteracts centrifugal force.
E elements are ideal for moderate to heavy duty clutch and brake service. They are suited for medium speed cyclic applications which are subject to large thermal loads.
Torque capacities up to 1,010,000 lb-in, 114.000 N-m.
Eaton-Airflex VE clutch and brake assemblies are used in:
Airflex VE elements were specially designed for greater heat dissipation capacity in an expanding type element. Available in a limited number of sizes, they offer all of the type E features.
VE elements are ideal for moderate to heavy duty clutch and brake service. They are suited for medium speed cyclic applications which are subject to large thermal loads. When used with an air agitating ventilated drum, the VE element provides excellent slip clutch and tension brake service.
Torque capacities up to 221,000 lb-in, 24.950 N-m.
Eaton-Airflex EB clutch and brake assemblies are used in:
Airflex EB element assemblies are used in both clutch and brake service with light starting loads. The EB is similar in design to the CB except that it is an expanding type unit. The primary function of the EB design and construction is the Airflex torsional resilient principal made possible by the transmission of power through the side walls of the flexible neoprene and cord actuating tube.
EB elements are suited for slow speed applications having moderate starting and stopping loads. They are used as slip clutches and tension brakes for lighter torque and horsepower applications.
Torque capacities up to 98,580 lb-in, 11.130 N-m.
Eaton-Airflex ER couplings are used in:
Airflex ER couplings are expanding units with neoprene facing. As such, they combine the advantages of a flexible and disconnect coupling. Engagement of the element should occur when there is no speed differential between driving and driven shaft.
ER elements are used as shaft couplings or holding brakes where engagement occurs at zero speed differential between element and drum. The ER is ideal for applications in which a disconnect is required without stopping the prime mover or in which the driving and or driven equipment must be frequently withdrawn from the drive.
Torque capacities up to 118,000 lb-in, 13.300 N-m.
Eaton-Airflex AS and AR clutches are typically used in:
Airflex hydraulic clutches are multiple-disc units available in stationary or rotating cylinder design. They are intended for use with a spray, splash or through the shaft lubricating system; where high speeds are encountered and a high torque/small envelope ratio is required. They are also suitable for air actuation.
Type AS utilises a bearing mounted, stationary actuating cylinder which permits a direct external connection to the clutch. The AS design eliminates any centrifugal head on the actuating fluid which could prevent clutch disengagement.
Torque capacities up to 26,000 lb-in, 2.550 N-m.
Eaton-Airflex DC clutches and brakes are typically used in:
Airflex DC clutches and brakes are available in single and multiple disc designs. They feature a favorable torque to size ratio and low inertia friction disc assemblies.
DC type elements are physically smaller than most other type clutches and brakes with the same torque capacity. They feature a low inertia friction disk assembly which reduces the overall inertia that must be started or stopped. There is also an option for split friction disks which allow for removal of the friction disks without disturbing other components of the drive system in mid-shaft element arrangement.
The DC element features a long wearing, self lubricating PolyPak seal which eliminates premature twisting failure and requires no external lubrication.
Torque capacities up to 2,061,000 lb-in, 233.000 N-m.
Eaton-Airflex DBA Spring-Applied brakes are typically used in:
Airflex DBA disc style brakes are spring-applied and air or hydraulically released. Brake discs are either solid or ventilated. Solid brake discs are used in applications requiring a heat sink and/or where engagement is infrequent. Ventilated discs are recommended for high speed cyclic applications. Equal torque is developed in either direction of rotation.
DBAV elements feature large friction areas which allow the brakes to absorb and dissipate high energy loads associated with high cyclic and high inertia stops. They require minimum adjustment for lining wear. Single disk units require no wear adjustment and dual disc units require only one wear adjustment during the long life of the friction material.
Torque capacities up to 386,630 lb-in, 43.050 N-m.
Eaton-Airflex DBB Spring-Applied brakes are typically used in:
Airflex DBB disc style brakes are spring-applied and air or hydraulically released. Their torque capacities and heat dissipation characteristics make them ideal for cyclic applications. Equal torque is developed in either direction of rotation.
The DBB element features a low inertia friction disc assembly which reduces the overall inertia that must be stopped. It also features optional split friction discs. This allows for the removal of friction discs without disturbing other components of the drive system in mid-shaft brake arrangement.
DBB elements feature long wearing, self lubrication PolyPak seals which eliminate premature twisting failure and require no external lubrication.
Torque capacities up to 2,535,750 lb-in, 286.524 N-m.
Eaton Airflex DBBS disc style brakes are spring-applied and air or hydraulically released. The DBBS style is offered in applications requiring higher speed operation or where precise balance of the rotating components is required. Their torque capacities and heat dissapation characteristics make them ideal in high speed, non-cyclic applications. Equal torque is developed in either direction of rotation.
Torque capacities up to 2,530,000 lb-in, 372.586 N-m.
Eaton-Airflex CBC clutch/brake combinations are applied in:
The Airflex CBC unit combines an air actuated disc clutch and spring-applied disc brake into a compact package, which can be readily adapted to new or existing flywheel drives. Designed primarily for high cyclic punch press service, the unit has been applied on a wide variety of high speed, high cyclic applications.
Complete CBC bearing mount flywheel hub packages are available upon request.
Clutch Capacities Up To: 788,000 lb-in, 58.073 N-m. Brake Capacities Up To: 372,000 lb-in, 42.029 N-m
Eaton-Airflex DCB clutch/brake combinations are applied in:
Airflex's DCB combination air-actuated disc clutch and spring-applied disc brake was specifically designed for the can making industry. It is ideally suited for high speed continuously running machinery requiring an extremely fast stop.
Clutch Capacities Up To: 75,000 lb-in, 8.475 N-m. Brake Capacities Up To: 55,000 lb-in, 6.215 N-m
Eaton-Airflex FSPA clutch/brake combinations are applied in:
Airflex FSPA packages feature drum type CB or VC air applied clutches fastened to standard bearing-mounted flywheels. These clutch/flywheel assemblies are then combined with drum type CS and CTE or disc type DBA and DBB spring-applied, air released brakes. Although designed primarily for punch press use, they have found application on all types of cyclic equipment.
Clutch Capacities Up To: 516,000 lb-in, 58.260 N-m. Brake Capacities Up To: 336,200 lb-in, 37.960 N-m
Eaton-Airflex CS brakes are typically used in:
Airflex CS drum style brakes are spring-applied and air released. They automatically engage should an air or electrical loss of power occur. The brake is unidirectional, developing less torque in the reverse direction of drum rotation.
Torque Capacities Up To: 19,800 lb-in, 2.235 N-m.
Eaton-Airflex CTE brakes are typically used in:
Airflex CTE drum style brakes are spring-applied, air released and develop greater torque than the Type CS. Their design and construction are ideal for moderate speed, high torque, cyclic applications. The brake is bi-directional, developing approximately the same torque in either direction of drum rotation.
Torque Capacities Up To: 108,350 lb-in, 12.200 N-m.
Eaton-Airflex WCS brakes are typically used in:
Airflex WCS elements are disc type, externally cooled, spring applied units. They are designed to absorb and dissipate the thermal loads associated with the most severe braking and tensioning applications. The WCS friction couple was developed specifically for continuous slip service and has a dynamic coefficient of friction which is larger than its static coefficient of friction.
The WCS element features a special high coefficient lining which provides 50% higher torque than standard friction linings and provides a 1:1 dynamic to static torque ration.
Torque Capacities Up To: 1,545,000 lb-in, 174.431 N-m. Thermal Capacities Up To: 2,600 HP 1.939 kW
Eaton-Airflex WCSB brakes are typically used in:
Airflex WCSB elements are air applied, water and air cooled, multiple disc brakes designed for heavy-duty brake/tensioning applications. They are similar to the WCB line except for a feature that allows for greater control of the braking/tensioning function.
The WCB element features dynamic tensioning, static holding and emergency stopping which are provided by one brake removing the need for multiple braking systems. It also features a specially formulated friction material, interfacing with a copper alloy surface which eliminates the stick-slip characteristics associated with ordinary frictional devices.
Torque Capacities Up To: 5,058,625 lb-in, 571.119 N-m. Thermal Capacities Up To: 3,900 HP, 2.908 kW
Eaton-Airflex WCB2 and WCBD brakes are typically used in:
Airflex WCB2 and WCBD elements are disc type, externally cooled units. They are designed to absorb and dissipate the thermal loads associated with the most severe clutch and brake applications. The WCB2 and WCBD's friction couple was developed specifically for continuous slip service and has a dynamic coefficient of friction that is greater than its static coefficient of friction.
Special high coefficient linings are also available which provide 50% higher torque than standard friction linings and provide 1:1 dynamic to static torque ratio. The WCB2 element features a specially formulated friction material, interfacing with a copper alloy surface, which eliminates the stick-slip characteristic associated with ordinary frictional devices.
The WCB2 elements work equally well with open or closed loop circulating systems. On mobile equipment, the engine's cooling system can be tapped to provide coolant to the element. In addition to the features of WCB2, the WCBD element has a unique dual piston design for improved controllability.
Torque Capacities Up To: 7,254,450 lb-in, 819.027 N-m. Thermal Capacities Up To: 5,200 HP, 3.878 kW
Created for applications that require a large flow, single passage rotorseal. This design incorporates a mounting flange for attachment to the machinery shaft or assembly. External American National Pipe Threads are provided on the inlet rotorseal shaft to facilitate supply line connections.
Port Sizes - 0.75", 1.0", 1.25", 1.50", 2.0"
Types AA2, B3 and C2
This group of rotorseals will handle most medium volume, single passage requirements. External threads on the seal shaft and standard pipe threads on the inlet port make installations an easy job.
Housing Port Sizes - 1/8", 3/8", 1/2"
Created for applications where axial length is critical and space is not available for an overhung rotorseal. The internal design and components of the Internal Rotorseal are the same as those used in the single passage rotorseals.
Port Sizes - 1/8", 3/8", 1/2"
Dual passage rotorseals allow the transfer of media thru two separate shaft passages located on the same shaft end. Each passage can be used for a different medium; for instance, air for clutch actuation and oil for bearing lubrication. Inlet and outlet ports have American National Pipe Threads. Airflex has five (5) dual passage rotorseal product lines.
The AD features a 1/4"-18 inlet port for each of the passages. Both passage outlets can discharge directly into the shaft end. An optional 1/4"-18 outlet port in the mounting flange could be used for the outer passage. The inner passage nose is sealed on its outside diameter by a pair of "O" rings. The outer passage is sealed to the shaft end with a compression grommet.
The Type ADP rotorseal attaches to the shaft end with a 1"-11 1/2 thread outlet instead of a mounting flange. The outer passage outlet feeds into the end of the machine shaft. The inner passage is a 1/4"-18 port located on a flat of the hex mounting nut.
The BD is similar to the AD, except for a larger diameter mounting flange. The inner passage is sealed with a a flat rubber washer which compresses on the bottom of a counterbore in the shaft end. A compression grommet is used between the shaft end and mounting flange to seal the outer passage.
The FDA type rotorseal is similar in design to the BD rotorseal, and has larger passages. The two inlet ports and the two flange outlet ports for the outer passage are 1/2"-14. Compression grommets are used between the shaft end and mounting flange to seal the inner and outer passages.
Designed to transmit actuating and cooling fluids. The RD can be used with mineral oil, water and air. The rotating seal is provided by a non-metallic sealing ring, held against the rotorseal shaft by a light spring force.
The BTA rotorseal was designed for simultaneous transfer of as many as three different fluids. Three 1/2-14 American National Pipe thread inlet ports on the side of the stationary body provide access to the concentric fluid passages. All three passages can discharge directly into the rotating shaft.
A 1/2-14 port in the mounting flange can be used as an optional outlet for the outer most passage.
The RT rotorseal has two 1" and one 0.5" diameter passageways and is available in a standard cast iron shaft design or a corrosion-resistant model with a brass shaft. The rotating seal is provided by a non-metallic sealing ring, held against the rotorseal shaft by a light spring force. The design promotes positive protection against leakage and minimal seal wear. Ball bearings are used between the stationary and rotating ports to provide rigidity to the rotorseal assembly and to minimize the running torque.
The Airflex quick release valve (QRV) is a pneumatic in-line, three-way valve designed to automatically close upon pressurization and open to exhaust when a pressure drop occurs in the supply line. The valve provides an exhaust port close to the pressurized chamber of the device being controlled rather than exhausting through long supply lines and/or control components. The end result is a reduction in lag time between the signal to exhaust and response.
Models are available with inlet ports suitable for either pipe or tubing connections.
Mufflers are available to reduce exhaust noise.