Typical applications for this type of Dry Clutch or brake would be as a primary drive or braking system between the motor source and the drive gearbox. These types of clutch construction usually consist of a combination of multiple plates of special heat treated steel, combined with a combination of organic or non-asbestos synthetic material plates. They are available in single plate units or multiple plate units; much favored in the packaging, textile, printing, food processing, book making, wood processing and special purpose machine industries.
At Keith Price, we can offer a wide range of dry type single disc or multi disc clutch and brake units in a variety of torque ratings in both 'stand alone' or clutch brake combination sets that are exchangeable & compatible with other similar units from other manufacturers.
Typical torque rating we are able to offer would be from 10Nm to 10000 Nm for multi plate units and 3Nm to 2500 Nm for single plate units.
Our single plate ''dry'' clutch and brake units are without slipring and are rated as zero backlash, using a simple construction design & little on going maintenance. Micro clutches are available from 0.3 Nm to 3Nm
Typical manufacturers would be Warner, Coremo, KEB, Lenze, Simplatroll, Shinko, Ogura, Ortlinghaus, Mayr, Wichita, Stromag, and Matrix. Baruffaldi.
Typical Machine Tool applications would be such as Butler Elgamill, Huron, Mecof, Sachmann, Sheet metal machines such as shears, presses, etc.
Regarding the double clutch & brake combination units we offer ''backlash free'' Electromagnetic Clutch & Brake Combination systems in open or enclosed versions. ( versions up to IP 65 protection standard for IP 44), that offer a  high production cycle due to a high frequency on-off operation that is possible.
These units are easy to install, and suitable for any type of motor due to wide range of versions available in torque ratings from 6 Nm to 2500 Nm.

Telescopic Slipring Brushes: We stock an array of slipring brushes as used to operate electromagnetic slipring clutches. They are available in telescopic types with M14, M16 & M18 threads in varied lengths to suit all clutch manufacturers. We also stock caliper type. A selection of types we keep are EMS, SK4, TSN, TSK, TSL, EMS 2A, EMS 2A/40, EMS 2A/60, EMS 22 mm, Tourco caliper type

General information:
The Telescopic Brushes are required for good transfer of electrical current to the clutch slipring. The above brushes are suitable for ''wet application'' (runs in oil) and can be used in a 24 volt DC supply. They are designed to give good transfer of electrical supply to the clutch slipring despite the presence of an oil film. To ensure satisfactory power supply to the clutch, the special ''wire type brush'' insert should be pressure loaded enabling it to penetrate the oil film and give a good contact. If this is not achieved, burning of the slipring is imminent, resulting in the clutch being rendered non functional.
''Dummy brushes'' are sometimes used (these are the same as normal brushes, but are not connected to a power source). The reason some manufacturers use these ''Dummy brushes'' is to provide an oil wiping action for the brush that delivers the power supply, especially when slipring velocities exceed 10 M/second.
Proper installation with minimum vibration is essential for long life of the brush. The brush should be secured directly into the machine casting or a strong support bracket, rigid enough to prevent any vibration. The brushes should be connected to the positive pole of the 24 volt DC supply. The life of the brush will be substantially reduced if the power supply is connected to the negative pole (earth), or if the negative pole has a poor connection.
We can offer technical data on this issue if required.

Brush construction wet operation:
The telescopic brush is made up of a screw body of the size stated in each type. The brush insert is so designed that its construction has an inner & outer brush, performing a good wiping action & ensuring a good contact. Secondly the outer and inner brush  are designed to have different natural frequencies in order to ensure this good contact in the presence of vibration, because only one brush at a time can be in resonance, resulting in a prolonged brush life.

Brush construction dry operation:
Current supply brushes for dry operation have a special carbon compound insert. It is essential to prevent oil and grease from the slipring and slipring brush if the clutch is to perform satisfactory.

Both the long and the short versions are available and there are different designs to suit all applications. Dummy brushes are not required in dry applications.

Freewheel Clutches (Indexing, Overrunning & Backstop Clutches): Various types are available for use in worm gear boxes etc. These units are interchangeable with Renolds, Stieber, Spraag and other renowned international manufacturers and are used extensively in material handling and mining machines etc. Some are used in machine tools such as Adcock & Shipley, TOS etc.

Electromagnetic Fail-safe Brakes:
These units are available in AC or DC supply with a simple air gap & torque adjustment operating system, resulting in a very low wear rate or operation. These units have an Asbestos free dual surface friction lining, giving a stable and rugged unit with they can be equipped with an optional accessory for a manual release.
Typical applications could be material handling equipment such as hoists, cranes & textile machinery.

Electromagnetic Spring applied holding brakes:
These units are a very reliable and safe in operation, giving a low wear rate of operation, due to the unit’s surface hardened armature disc friction elements. They are manufactured to class 4 insulation in torque rating from 1 Nm to 160 Nm. for servo motors & up to 400 Nm for other applications.
Typical applications would in conjunction of all servo motors, packaging and medical machinery, & automation equipment such as robotic units

 Permanent Magnet Clutches and Brakes:
Used in dry operation, they give a very high level of backlash free reliability. These Permanent Magnetic clutches and Brakes give optimum constant torque at high operating temperatures. Typical applications would be in electric motors, especially servo motors. Torque 2 Nm- 160 Nm.

Electromagnetic Wrap-string Clutches and Brakes:
These specialist units give very high accurate poisoning with a high torque to size ration, resulting in very quick response times with no adjustments necessary for the unit’s life span. The units are controlled by heavy duty solenoid coils giving total reliability in the operation of the unit.

Electromagnetic clutches used in the textile industry:
Electromagnetic clutch & brake drives for textile weaving looms are custom developed for accurate control of ''Pick Finders'', in modern Rapier Looms. They are excellent for the ''slow motion'' control of ''Jacquard Dobby'' & Jacquard motion. Very high torque for their small dimensions operation at vibration free, very low noise and can tolerate temperatures up to 150 deg C.
These units were specially designed for modern high speed Wearing Rapier Looms that can be possibly used on Air-Jet & Water Jet Looms. Available in torque ratings from 180 Nm to 1400 Nm.

Electromagnetic Compressor Clutches:
Self cleaning, and maintenance free operation for the control of air conditioning in modern day automobiles, such as busses, passenger cars, trucks, tractors & any other wheeled or tracked vehicles

Electromagnetic Fan clutches:
These units are a low cost clutch for all sizes of engines, giving benefits such as economic fuel consumption, increasing engine life and controlling pollution levels etc. Custom manufactured units are available to suit most engines as used in buses and trucks. Torque 70 Nm to 460 Nm are available.

Mechanical Multi Disc Torque Limiters:
These torque limiter clutches are low maintenance, low wearing with a clutch plate material of both steel on steel or sintered bronze on steel construction available. Upon application, we can offer special versions with sensors and electronics that give very accurate results, and can be operated via remote control.
These systems are especially used in the pharmaceutical industry, packaging machinery, fabric and paper material processing machinery & food processing machinery environment etc.
Our standard versions that are available on application are 10 Nm to 300 Nm, but are manufactured up to 30000 Nm in torque.

Freewheel Clutches: (Indexing, Overrunning & Backstop Clutches):
Roller-ramp transmission elements, very high torque transmitting elements.
Various types are available for use in worm gear boxes etc. These units are interchangeable with Renolds, Stieber, Sprag and other renowned international manufacturers and are used extensively in material handling, mining machines, heavy duty printing machines, conveyors for mining industry, packaging and agriculture equipment etc.
Torque range available: 20Nm to 1000000 Nm.
They are manufactured in a variety of designs including ''individual spring loaded'' , ''D shape sprag'',  ''Free action PCE'' etc
Some are used in machine tools such as Adcock & Shipley, Maho milling machines, TOS lathes, Gulian,  etc.

Mechanical Operated Clutch: We can have manufactured single or double acting units with a torque carrying capacity of 20 Nm to 2000 Nm.
Mechanical operated clutch and brake multi disc units are traditionally used on radial drills, lathes, auto lathes etc. Typical application would be found in Anselmi, Archdale, Asqith, Behringer, Binns & Berry, Breda, Broadbent, Butler Elgamill, Churchill, Cincinnati, CMT, Colchester, Craven, Csepel, Dainichi, Defum, DeVieg, Dorian, Dean Smith & Grace, Clovis, Elliot, Famot, Forges DeGilly, Fritz Werner, Froriep, Gambin,

Sometimes known as serrated tooth clutches. Used in applications where extreme torque is required such as feed mechanisms, & on some CNC machines within the turret tool changer system. These units are manufactured in a range of torques from 20 Nm- 100000 Nm.
These Tooth clutches can be operated in both 'wet & 'dry applications, the construction comprising of a 'potted coil creating a magnetic flux when power activated. Engagement is via a nitride steel tooth ring and a similar material manufactured armature disc. Springs are often used to ensure that 2 tooth components are kept apart when the clutch is de- energized. Most of these clutches operated on 24 Volt DC power, but on application can be supplied on other options.
They are available in Slipring or Non Slipring types
A point of good practice is to ensure that no speed differential should be evident while the tooth clutch is being engaged, except where there are torsionally flexible elements on the input and output drives. In which case slight speed differential is permitted.
The tooth profile is available in many configurations, such as 'saw tooth clockwise' , 'saw tooth anti clockwise', 'overload tooth form', 'spaced tooth form', 'Stepped tooth clockwise', 'stepped tooth anti clockwise', & 'self locking' these can be discussed on application, however the most common types found in machine tool applications are  the 'standard' or 'standard backlash free'
Depending on the clutch type required, they are available with a vas array of bore sizes and types from plain bore to spline bore in Slipring models, and face mounting holes in non slipring models.
These special clutches are used in very large milling machines, lathes and boring mills such as  Asqith Floor Borers, Makino CNC Machining Centers, Poreba Lathes & Sachman Bed Mills etc.,

Our overseas principles are able to supply all types of OM and generic clutch disc as used in automatic transmission in  heavy earth moving equipment and machinery. Types of equipment includes: Allison,  Beml loaders, Caterpillar, Clark, Cummings, Daewoo, Demag, Eder, JCB, Haulpak, Hind, Hitachi, Marion shovels, Hyundai, Komatsu, Poclain, Volvo, Samsung, Tata P&H, Terex, Twin Disc, ZF, etc. The range extends to diverse applications such as fixed heavy plant machinery, forging machines, marine gearboxes and mining and construction machinery.