Shaft Couplings

Types of Couplings
Category: Couplings
Write-up Tags:Couplingcouplingsdiaphragm couplingsdisc couplingsgear couplingsgrid couplingsjaw couplingsmaterial flexing couplingsmechanical flexing couplingsroller chain couplingssleeve couplingstire couplingstypes of couplings
Coupling fall into two main classes: Materials Flexing and Mechanical Flexing. The material flexible varieties obtain their flexibility from stretching or compressing a resilient material, for example rubber, or from the flexing of thin metallic discs or grid. Material flexing couplings never call for lubrication, using the exception of grid couplings.

The mechanical flexing couplings accept misalignment from rocking, rolling or sliding of metal surfaces. All metal mechanical flexing couplings demand lubrication.

Materials Flexing Couplings
Material flexing couplings commonly usually do not call for lubrication and operate in shear or compression and are in a position to accept angular, parallel and axial misalignment.

Examples of material flexing couplings are jaw, sleeve, tire, disc, grid and diaphragm couplings.
– Jaw Couplings
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The jaw coupling is actually a materials flexing coupling that transmits torque thru compression of an elastomeric spider insert placed involving two intermeshing jaws.
Flex component is normally manufactured from NBR, polyurethane, Hytrel or Bronze
Accommodates misalignment
Transmits torque
Utilized for torsional dampening (vibration)
Reduced torque, basic goal applications
– Sleeve Coupling
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The sleeve coupling transmits minimal to medium torque concerning connected tools in shear as a result of an elastomeric insert with male splines that mate with female hub splines. The insert material is ordinarily EPDM, Neoprene or Hytrel along with the insert is usually a 1 or two piece design and style.
Reasonable misalignment
Torsional dampening (vibration)
End float with slight axial clearance
Low to medium torque, general function applications
– Tire Coupling
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These couplings have a rubber or polyurethane element connected to two hubs. The rubber component transmits torque in shear.
Minimizes transmission of shock loads or vibration.
Substantial misalignment capability
Effortless assembly w/o moving hubs or connected tools
Reasonable to higher pace operation
Broad array of torque capability
– Disc Coupling
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The disc coupling?¡¥s principle of operation has the torque transmitted as a result of flexing disc elements. It operates by means of tension and compression of chorded segments on a typical bolt circle bolted alternately in between the drive and driven side. These couplings are commonly comprised of two hubs, two discs packs, plus a center member. A single disc pack can accommodate angular and axial misalignment. Two disc packs are necessary to accommodate parallel misalignment.
? Lets angular parallel and axial misalignment
? Can be a true restricted finish float design
? A zero backlash design
? Higher speed rating and stability
– Diaphragm Coupling
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Diaphragm couplings make use of a single or maybe a series of plates or diaphragms for the versatile members. It transmits torque through the outside diameter of a versatile plate for the within diameter, throughout the spool or spacer piece, after which from within to outdoors diameter. The deflection in the outer diameter relative for the inner diameter is what occurs when the diaphragm is subject to misalignment. One example is, axial displacement attempts stretch the diaphragm which effects in the mixture of elongations and bending of the diaphragm profile.
? Permits angular, parallel and higher axial misalignments
? Utilized in large torque, large speed applications
Mechanical Flexing Couplings
The mechanical flexing couplings accept misalignment from rocking, rolling or sliding of metal surfaces. All metal mechanical flexing couplings demand lubrication.
Examples of mechanical flexing couplings are gear, grid and roller chain couplings.
– Gear Couplings
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Gear couplings transmit the highest sum of torque plus the highest sum of torque within the smallest diameter of any versatile coupling.

Every coupling consists of two hubs with crowned external gear teeth. The hubs mesh with two internally splined flanged sleeves that happen to be bolted with each other. Gear couplings accommodate angular and axial misalignment through the rocking and sliding in the crowned gear teeth towards the mating sleeve teeth. Parallel misalignment is accommodated by having two adjacent hub/sleeve flex factors. Gear couplings call for periodic lubrication based on the application. They are delicate to lubrication failures but if adequately installed and maintained, these couplings have a service lifestyle of three to five years and in some cases they are able to final for many years.
– Grid Couplings
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Grid couplings consist of 2 radially slotted hubs that mesh by using a serpentine strip of spring steel the grid offers torsional damping and versatility of an elastomer but the strength of steel. Grid couplings transmit torque and accommodate angular, parallel and axial misalignment from one hub to the other by way of the rocking and sliding of the tapered grid during the mating hub slots. The grid cross segment is usually tapered for superior hub get hold of and easier assembly. As there is motion among contacting hub and grid metal elements, lubrication is needed.
– Roller Chain Coupling
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Roller Chain sort couplings include two radially sprocketed hubs that engage a strand of double pitch roller chain. Chain couplings are used for reduced to moderate torque and velocity applications. The meshing of the sprocket teeth and chain transmits torque along with the connected clearances accommodate angular, parallel and axial misalignment.

Chain couplings require periodic lubrication depending on the application. The lubrication is generally brushed onto the chain and a cover 208 Flexible Shaft Couplingis employed to help hold the lubrication over the coupling.
To find out extra about all of the various kinds of couplings, visitthe EP Coupling Web page.
Mechanical Power Transmission ¡§C Shaft Coupling replacement technology.
Replaces Spicer, Lovejoy, Beam, Bellows and Jaw sort shaft couplings
EP Coupling may be the most recent in shaft coupling layout, beam, bellows and jaw couplings all do the job at high pace but minimal angle of misalignment.
About the other end universal joints can manage larger amounts of misalignment but at reduce speeds and consistent servicing.
EP Coupling like a hybrid flexible coupling can do both.
Improving on existing coupling technology we deliver a number of various versions which makes it possible for a 0 to 25?? operational angle of usage
No internal components ¡§C No bearings to be continuously lubricated and replace , this saves you time and money.
One Piece layout signifies no broken yokes or hubs.
Higher speed- Runs at up to 7000 RPM
Torsionally rigid at minimal angles of misalignment
Scalable ¡§C the EP unit may be scaled up or down to suit person client specifications.?
Customizable ¡§C Have a unique form/function the spring/ball settings is usually altered to match most applications.
Distinctive shaft varieties or sizes, we do AGMA/ANSI, SAE, & DIN bore/keyway and spline bore?¡¥s.
Being manufactured from two counter wound springs implies it absorbs shock force without damage
Spring style and design enables greater angle of usage without damaging components?
ISO9001 2007 manufactured
The patented EP design allows for larger angle of usage without deformation using the torque transfer seen with Universal Joints, giving the performance of the Universal joint without the continual servicing.
So how does it get the job done? The layout is quite simple, the sets of springs are counterwound so one particular tightens while the other loosens and visa versa.
This enables the coupling to get the job done in the two forward and reverse.
Its simplicity doesn?¡¥t finish there, the only thing inside the center of your coupling can be a single ball bearing this will allow the coupling to pivot allowing for maximum flexibility, this signifies no bearings.
Bearings are a frequent maintenance issue, they cannot run in harsh environments like water, mud, sand, dust and dirt as any intrusion by any of those aspects leads to rapid failure.
So no bearings signifies no continual upkeep or worse replacement.
A single piece style ¡§C As the product is just hubs and springs the things that can go wrong are greatly reduced, so no cracked yokes or broken propeller joints, no worn out bearings.
Torque ¡§C the bigger the better The flexible coupling is powered through the springs, but because it is actually a pair of springs it effectively is a metal bar, add the ball bearing it turns into a flexible metal bar.
So this implies a lot more torque and still have the flex that would destroy a standard universal or continuous velocity joint.
Substantial speed/low pace ¡§C Now flex coupling technological innovation is split into two major areas, higher velocity, minimal torque, small angle of misalignment and reduce pace, increased torque, larger angle of misalignment.
Diverse couplings applications, same product ¡§C Flexible/High speed couplings are Beam couplings, elastomeric, bellows couplings and jaw type couplings which can run at large velocity maintain torsional rigidity but traditionally can only run at a few degrees of misalignment before starting to wear out.
Add to that because of that small misalignment angles , the amount of torque these flex couplings can deal with is quite small.
EP?¡¥s flexible coupling remains torsionally rigid at reduce angles at high speed, with far additional torque than say a standard beam coupling, with all the added flexibility if necessary.
Reduced pace couplings like universal joints can work at large torque and larger degrees of misalignment but they have inner components that need to be continuously maintained.
If not greasing for lubrication and bearing replacement along with the angles of misalignment they can work at is limited as well, as too much will lead to bearing failure.
Our flex coupling can meet the greater torque demands and also the increased versatility while needing no maintenance as you would have to with using universal joints.
A single product multiple uses. Why would you use distinctive products if you didnt need to when 1 product will do it all, a no maintenance, substantial pace, substantial torque, increased angle of misalignment capable versatile coupling.
Three models and counting ¡§C To date we have three models the czep150, czep300 along with the czep500
czep150 is capable of handling 150ft lbs of torque and be employed at 25??.
czep300 is capable of handling 300 ft lbs of static torque and operate at angles of 25??
czep500 can manage 500ft lbs of static torque .
We are looking at what the market demands so bigger or smaller we will be adding more as time goes on.
We have all the splines and keyways you need to fit your gear.
We want to get the job done with you, so speak to us and lets get the job done with each other to solve your flexible coupling issues today.
Viscous coupling is filled with silicone and is not computer controlled. A series of plates with holes and slots turn inside the silicone fluid. Some plates are attached towards the front axle driveshaft and some are attached to your rear axle driveshaft. Normally the plates turn at the same rate without relative motion. The silicone fluid becomes very viscous due to it’s viscoelasticity as soon as the plates rotate at differentiating pace. The silicone fluid resists the shear generated in it through the plates with differentiating speed, causing a torque transfer from your faster spinning axle on the slower spinning axle. Therefore, slight velocity difference is required for torque transfer.
If the rear wheels and driveshaft are slipping and turning faster than the front, friction amongst the plates increases due to your generated shear while in the fluid, slippage is reduced, the rear wheel spin is reduced and also the torque through the input shaft is transferred towards the front.
A viscous coupling may be put in in two ways:
viscous coupling acting instead of a center differential
Viscous Coupling Acting Instead Of the Center Differential
In this case, in normal conditions, all energy is transferred to just a single axle. One part on the viscous coupling is linked on the driving axle, another part is connected to your driven axle. When driving wheels slip, viscous coupling locks and torque is transferred for the other axle. This is an automatic all wheel drive system.
The disadvantage of the viscous coupling is that it engages too slowly and enables for excessive wheelspin before transferring torque to another wheels. This is especially critical in automatic all wheel drive systems – when cornering under acceleration, the rear end is engaged with a slight delay, causing sudden change within the car’s behaviour fron understeer to oversteer. Also, when taking-off in sand, front wheels can become bogged down before all wheel drive is engaged.
In an attempt to reduce the coupling’s activation time, czh always transfers 5% of torque to rear wheels (this is achieved by rear driveshaft rotating slower than front driveshaft in normal conditions, causing viscous fluid warm-up and slight solidification).
At the same time, pre-tensioning the coupling too much leads to undesireable transmission wind-up and makes the system too delicate to uneven tread wear on front and rear tires. This is why Volvo first reduced the pre-tensioning in 2000 then replaced the viscous coupling with epdex clutch on their all wheel drive vehicles in model year 2003
Viscous Coupling Integrated Into The Center Differential
In this case, all wheels are powered at all times. Viscous coupling is integrated into the center differential. Central differential distributes power to all wheels and lets them turn at different speeds while cornering. When excessive wheelspin occurs on a single on the axles, viscous coupling locks the differential and equalizes the speeds of both axles. Torque is transferred to wheels that have traction. This is really a full-time all wheel drive system.
Viscous coupling can also be integrated into the rear differential.
Precision Versatile Shaft Couplings
Clamping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings supply far more holding power than set screw couplings without marring the shaft.
Set Screw Precision Versatile Shaft Couplings
Tighten the set screws to fasten these couplings to your shaft. Set screws bite into the shaft to hold the couplings in place.
Clamping Vibration-Damping
Precision Flexible Shaft Couplings
Clamping Vibration-Damping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings provide more holding energy than set screw couplings without marring the shaft.
Set Screw Vibration-Damping
Precision Versatile Shaft Couplings
Set Screw Vibration-Damping Precision Versatile Shaft Couplings
Each and every hub includes a set screw, which bites into your shaft to hold the coupling in place.
High-Misalignment Vibration-Damping
Precision Versatile Shaft Couplings
High-Misalignment Vibration-Damping Precision Versatile Shaft Couplings
Also called double-loop couplings, these possess a flexible center that reduces vibration and compensates for substantial parallel and angular shaft misalignment.
Servomotor Precision Flexible Shaft Couplings
Capable to manage higher twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications.
High-Speed Precision Versatile Shaft Couplings
Which has a bellows among two hubs, these couplings take care of all types of misalignment and are good for precision stepper and encoder motion-control applications.
High-Misalignment Precision
Flexible Shaft Couplings
High-Misalignment Precision Versatile Shaft Couplings
Specially designed ridges allow these bellows couplings to compensate for more misalignment than other precision couplings?auseful for low-torque, high-precision applications for example instrumentation and motion control.
Electrically Isolating Servomotor
Precision Versatile Shaft Couplings
Electrically Isolating Servomotor Precision Flexible Shaft Couplings
An acetal plastic spacer at the center of these couplings insulates bearings, encoders, and other shaft components from stray electric current. Use them with servomotors, which sometimes generate current that travels down the shaft and can damage circuit boards, interfere with readings, and cause wear on bearing raceways.
High-Speed Servomotor Precision
Versatile Shaft Couplings
High-Speed Servomotor Precision Flexible Shaft Couplings
Connect shafts and ball screws to high-speed servomotors and stepper motors?athese shaft couplings deal with four times more pace than standard servomotor couplings.
Versatile Shaft Couplings
Set Screw Flexible Shaft Couplings
Just about every hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place.
Clamping Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings deliver a lot more holding power than set screw couplings without marring the shaft.
High-Torque Set Screw Flexible Shaft Couplings
The thick split spider on these couplings can take on twice as much torque as standard spiders, extending the life of bearings, seals, and motors.
Clamping High-Parallel-Misalignment
Flexible Shaft Couplings
Clamping High-Parallel-Misalignment Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings supply far more holding electrical power than set screw couplings without marring the shaft.
Set Screw High-Parallel-Misalignment
Flexible Shaft Couplings
Set Screw High-Parallel-Misalignment Flexible Shaft Couplings
Each and every hub includes a set screw, which bites into your shaft to hold the coupling in place.
High-Angular-Misalignment Versatile Shaft Couplings
Also known as Schmidt couplings, these handle increased angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they’re frequently utilised with conveyor rollers and roller feeds in printing and packaging machines.
Machinable-Bore Flexible Shaft Couplings
Customize the bore of these flexible couplings to align uncommon shaft sizes as well as shafts that have become undersized from wear or oversized from coatings.
Shock-Absorbing Versatile Shaft Couplings
A strip of versatile spring steel wraps around the teeth of each hubs to absorb sharp, momentary load increases that can come from motor startups, emergency braking, or sudden impact with hard objects.
Metal-Detectable Flexible Shaft Couplings
Designed for use in food-processing applications, where a fraying spider could contaminate a batch, these couplings have a metal-detector-grade rubber spider. Small pieces of metal inside the rubber will set off a metal detector, alerting you to the problem.
Cleaned and Bagged Flexible
Heat-Resistant Shaft Couplings
Cleaned and Bagged Versatile Heat-Resistant Shaft Couplings
Flexible Shaft Couplings for Continuous Motion
High-Speed Vibration-Damping
Flexible Shaft Couplings
High-Speed Vibration-Damping Versatile Shaft Couplings
Use these gear-shaped couplings for high-speed and high-torque applications.
Vibration-Damping Flexible Shaft Couplings
A flexible tire on these couplings safeguards components on your shafts by reducing vibration and shock.
High-Torque Flexible Shaft Couplings
Having a rugged roller-chain design, these couplings supply excellent torque and angular misalignment capacities.
Ultra-High-Torque Flexible Shaft Couplings
By using a rigid gear layout, these steel couplings transmit much more torque than other couplings of the same size.
Lightweight Flexible Shaft Couplings
Made with lightweight nylon sleeves, these gear couplings require less energy to move than other high-torque flexible couplings. They compensate for parallel, angular, and axial misalignment.
Noncontact Magnetic Shaft Couplings
Magnetic force transfers torque from a single half of these couplings towards the other; there?¡¥s no contact concerning the elements, so they won?¡¥t wear. Couplings compensate for angular and parallel misalignment.



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SSJ UK Limited
Sara Jones
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TEL: + 44 7944 869861
ADDR.: Bury St Edmunds, Suffolk IP32 7LX, UK

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