One Way Sprag Cam Backstop Clutch Mr750/Mr800/Mr900/Mr1000

Installation and Usage
1. MR Series Cam Clutch is used for outer race overrun in highspeed applications. 
2. For attaching a pulley, a gear, or a sprocket to the clutch, insert the clutch into the hub of the said device, and screw the bolts (high tension) into the tapped holes on the clutch. The tolerance of the bore hub should be H6 or H7 of ISO R773. 
3. When mounting the clutch on a shaft, apply pressure to the clutch inner race, but never to
The outer race. 
4. Allow for a clearance between the top of the clutch keyway and the top of the key for pressure ventilation. A pressure ventilation hole is provided on the keyway of the clutch inner race. 
6. When the clutch receives a shock load or is designed for use at full torque capacity, it is
Better to use it on an unannealed or hardened shaft. 
7. Thrust load should be taken up by other devices, not by the Cam Clutch. 
8. MR Series Cam Clutch includes special keys (hardened) which have a special height
Dimension. The depth of the key groove for the shaft should comply with ISO R773. 
9. Forced lubrication is recommended for continuous operation. 
Dimensions and Capacities (Dimensions in mm)



Lift-off (Outer race rotation type)
MR Series Cam Clutch is structured so that the cam rotates together with the outer race when the outer race overruns. As shown in the figure, the spring force (Fs) works to make the cam come in contact with the inner and outer races with fixed pressure. Conversely, the eccentric force (FC), which works on the cam when overrunning, applies a moment in the direction where the cam does not contact the inner and outer races. Accordingly, when the overrunning speed is increased, the eccentric force (FC) increases and the movement is augmented over the movement caused by the spring force. Next, the cam lifts off from the inner race and loses contact with it. This phenomenon is called "lift-off. " In this state, there is no friction on the cam and it continues overrunning as long as the bearing lasts. 



Applications of one way clutch bearing: 

Air cleaning plants; Gear Reducers, Conventional and Nuclear Power Plants, Agricultural machines; Automotive Industry, Clay Pigeon Traps, High Voltage Switchgear, Buchet elevators; Compressors; Conveyors; Cranes and hoists; Dry cleaning machinery; Duplicator equipment; Fish net machines; Heat-treatment furnaces; Induced draft fans; Multi-states conveyors; Packaging machinery; Printing machinery; Pumps; Punch presses and feeders; Power plants; Refinery equipment; Speed reducers; Standby power units; Textile looms; Two-speed grinders; Two-speed shiftovers; Washing machines; Wire winding machinery. Rolling Mills, Roller Coaster, Fitness Machines, Industrial Fans, Vertical Pumps


Gear Reducers

Here one-way clutches are used as integral backstops in drive systems for conveyors, industrial fans, pumps, crushers, mixers, kilns and turbines. One-way clutches are also widely used as overrunning clutches in auxiliary or pony drives and dual-drive systems. We offers solutions for long life and maintenance free operation. 


Printing Machines

The classic application in printing machines is the inking roller auxiliary drive. But one-way clutches have also been used extensively as indexing devices, to provide an inexpensive and reliable means of achieving a mechanical variable speed drive for the inking roller main drive. 
We know-how results in inexpensive, customised solutions even for the most demanding applications. 


Conventional and Nuclear Power Plants

R&B backstops are used extensively on pumps used in the primary and secondary cooling systems of power generating equipment. R&B is certified to KT 1401 as an authorised supplier for the nuclear power industry. 



Textile Machines

There is a wide range of applications for R&B clutches in textile machinery, especially in circular knitting machines, thread preparation, bobbin winding and looms. In applications using sprag clutches the special Formchrome finish used in our ball bearing series of one-way clutches offers an exceptionally long life in overrunning applications. 


Automotive Industry

There is a wide range of applications in the automotive manufacturing sector. Overrunning clutches on conveyor systems and engine test bed starter mechanisms, exhaust fan backstops in spray painting booths. The multiplicity of designs offered by R&B offers the designer the best opportunity to achieve the perfect "fit". 

Clay Pigeon Traps

In this common application a one-way clutch is used as a backstop to prevent the arm of the trap "bouncing" back after a launch. The rugged R&B roller-ramp design provides a reliable solution for this demanding but price sensitive application. 



High Voltage Switchgear

Here a one-way clutch is used as a backstop to secure the actuating spring pre-load position. The quality and reliability of the chosen R&B product ensures instantaneous applied torque and a firm "latch". 


Agricultural Machinery

On seed drills a series of one-way clutches is used as an indexing mechanism to provide an infinitely variable speed drive. One-way clutches are also used for overrunning on round bale presses and as backstops for bulk conveyors and silo extractors. R&B ball bearing series sprag clutches and self-contained designs offer simple and effective solutions for many applications in this industry. 


Car Washing Gantries

To avoid damage to vehicles in the event of a drive system failure car washes use overrunning clutches in the horizontal roller drive. R&B ball bearing series and self-contained roller-ramp designs can be very easily incorporated into chain sprockets, timing belt pulleys and other drive elements. 


Rolling Mills

In the steel, and other metals industry one-way clutches are used as overrunning drives in roller conveyors. The speed of the conveyed material can momentarily be accelerated without any effect on the main drive. 

Fitness Machines

R&B ball bearing clutches have proved dependable and durable in the flywheel assembly of superior quality rowing and stepper machines and novel drive systems in bicycles and manually operated wheelchairs. 

Davits (Winches)

R&B one-way clutches are used in combination with brakes to ensure the safe lowering and raising of rescue vessels on ships and off-shore platforms. New industry wide standards are satisfied by R&B design and manufacturing quality. 


Bow Thruster

R&B one-way clutches are used as backstops to prevent reverse rotation of the thruster's propeller when not in operation. Units with centrifugally disengaging sprags offer a solution that can be easily incorporated into the drive gearbox and, under drive conditions, operate contact free to ensure a very long operating life. 

Industrial Fans

One-way clutches are frequently used in multiple fan installations to prevent non driven fans from "windmilling" in the reverse direction. 

Vertical Pumps

Large vertical pumps used in power generating plant cooling systems and for flood control frequently employ a backstop. Larger versions of the R&B high speed backstop are ideal for these applications and may be mounted on the top of the pump or the electric motor. 

When it comes to mechanical One-Way Clutches, our Cam Clutch is the best
This mechanical, unidirectional clutch has a number of cams arranged regularly, providing backlash-free operations. 
· High precision through advanced machining using dedicated machines
· Excellent durability with uniquely heat treated cams
· Secure operation and highly reliable performance




Industry Applications -- Machine Tools
We offers a complete line-up of products, cultivated through our many successes and experience, for any machine tool application. 
Contact one way cam clutch to learn about the total solutions we can provide to customers developing new equipment or reviewing existing models. 



Automotive Manufacturing
You'll find one way cam clutch products used in every section: The formation presses for vehicle bodies and components, the coating process, mounting and assembly process, testing lines, and so on. 


Waste Treatment Plants
One way cam clutch products are used in every process at waste treatment plants. 
We propose the ideal specifications and product for any line or equipment and contribute to recycling and environmental activities. 


Papermaking
You'll find one way cam clutch products used in a variety of processes, from processing wood chips and used paper into pulp to conveying raw fabric and delivering finished products. 


Steelmaking Equipment
You'll find one way cam clutch products used in a variety of processes, from processing wood chips and used paper into pulp to conveying raw fabric and delivering finished products. 


Medical Equipment
A wide range of one way cam clutch products support the needs of the medical industry. They meet customers' needs for quality and functionality and contribute to the creation of reliable equipment. 


Power and Performance for the Mining Industry
Surface Mining
· Drill Rigs
· Rotary Breakers
· Feeder Breakers
· Reclaimers
· Coal Port Loading Facilities
· Tandem Drive Road Graders
· Mining Shovels
· Conveyors
· Diverter Chutes and Flop Gates
Underground Mining
· Shuttle Cars
· Face and Roof Drillers
· Continuous Miners, Bridge Conveyors (Jiffy Conveyors)
Specialty Mining Products
· Power Locks
· Sprockets
· Cam Clutches, Back Stops
· Power Cylinders
· One Touch Inspection Door