Shaft Couplings

Forms of Couplings
Category: Couplings
Short article Tags:Couplingcouplingsdiaphragm couplingsdisc couplingsgear couplingsgrid couplingsjaw couplingsmaterial flexing couplingsmechanical flexing couplingsroller chain couplingssleeve couplingstire couplingstypes of couplings
Coupling fall into two key categories: Material Flexing and Mechanical Flexing. The materials flexible kinds acquire their versatility from stretching or compressing a resilient material, including rubber, or from the flexing of thin metallic discs or grid. Material flexing couplings tend not to call for lubrication, with 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
Materials flexing couplings typically usually do not demand 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 can be a materials flexing coupling that transmits torque thru compression of an elastomeric spider insert positioned concerning two intermeshing jaws.
Flex element is typically made from NBR, polyurethane, Hytrel or Bronze
Accommodates misalignment
Transmits torque
Made use of for torsional dampening (vibration)
Very low torque, general goal applications
– Sleeve Coupling
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The sleeve coupling transmits lower to medium torque involving connected gear in shear through an elastomeric insert with male splines that mate with female hub splines. The insert materials is generally EPDM, Neoprene or Hytrel along with the insert is usually a a single or two piece style.
Moderate misalignment
Torsional dampening (vibration)
End float with slight axial clearance
Very low to medium torque, common purpose applications
– Tire Coupling
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These couplings have a rubber or polyurethane component linked to two hubs. The rubber element transmits torque in shear.
Lowers transmission of shock loads or vibration.
Large misalignment capacity
Quick assembly w/o moving hubs or linked tools
Reasonable to substantial pace operation
Broad array of torque capacity
– Disc Coupling
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The disc coupling?¡¥s principle of operation has the torque transmitted by way of flexing disc components. It operates by way of tension and compression of chorded segments on a popular bolt circle bolted alternately involving the drive and driven side. These couplings are generally comprised of two hubs, two discs packs, plus a center member. Just one disc pack can accommodate angular and axial misalignment. Two disc packs are wanted to accommodate parallel misalignment.
? Enables angular parallel and axial misalignment
? Can be a true limited end float style
? A zero backlash design and style
? Large speed rating and balance
– Diaphragm Coupling
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Diaphragm couplings utilize a single or possibly a series of plates or diaphragms for the flexible members. It transmits torque in the outside diameter of the versatile plate to your within diameter, throughout the spool or spacer piece, after which from within to outdoors diameter. The deflection from the outer diameter relative for the inner diameter is what happens once the diaphragm is topic to misalignment. Such as, axial displacement attempts stretch the diaphragm which effects inside a mixture of elongations and bending in the diaphragm profile.
? Allows angular, parallel and substantial axial misalignments
? Utilized in high torque, substantial velocity applications
Mechanical Flexing Couplings
The mechanical flexing couplings accept misalignment from rocking, rolling or sliding of metal surfaces. All metal mechanical flexing couplings require 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 as well as the highest volume of torque inside the smallest diameter of any flexible coupling.

Just about every coupling includes two hubs with crowned external gear teeth. The hubs mesh with two internally splined flanged sleeves which have been bolted with each other. Gear couplings accommodate angular and axial misalignment through the rocking and sliding from the crowned gear teeth towards the mating sleeve teeth. Parallel misalignment is accommodated by owning two adjacent hub/sleeve flex factors. Gear couplings require periodic lubrication depending on the application. They can be delicate to lubrication failures but if correctly installed and maintained, these couplings have a support life of 3 to 5 years and in some instances they will last for decades.
– Grid Couplings
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Grid couplings include 2 radially slotted hubs that mesh with a serpentine strip of spring steel the grid offers torsional damping and flexibility of an elastomer but the strength of steel. Grid couplings transmit torque and accommodate angular, parallel and axial misalignment from a single hub to your other through the rocking and sliding of the tapered grid during the mating hub slots. The grid cross part is generally tapered for much better hub get in touch with and easier assembly. As there is certainly motion involving contacting hub and grid metal components, lubrication is required.
– Roller Chain Coupling
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Roller Chain type couplings consist of two radially sprocketed hubs that engage a strand of double pitch roller chain. Chain couplings are employed for low to moderate torque and velocity applications. The meshing with the sprocket teeth and chain transmits torque and also the related clearances accommodate angular, parallel and axial misalignment.

Chain couplings demand periodic lubrication depending on the application. The lubrication is generally brushed onto the chain along with a cover is applied to help hold the lubrication on the coupling.
To find out more about all the different types of couplings, visitthe EP Coupling Web page.
Mechanical Power Transmission ¡§C Shaft Coupling substitute engineering.
Replaces Spicer, Lovejoy, Beam, Bellows and Jaw variety shaft couplings
EP Coupling could be the latest in shaft coupling style, beam, bellows and jaw couplings all operate at large velocity but low angle of misalignment.
On the other finish universal joints can deal with greater quantities of misalignment but at decrease speeds and consistent upkeep.
EP Coupling as being a hybrid flexible coupling can do both.
Enhancing on existing coupling technology we supply quite a few various versions which allows a 0 to 25?? operational angle of usage
No internal components ¡§C No bearings to be consistently lubricated and replace , this saves you money and time.
One particular Piece design and style indicates no broken yokes or hubs.
Large speed- Runs at up to 7000 RPM
Torsionally rigid at reduced angles of misalignment
Scalable ¡§C the EP unit could be scaled up or right down to suit person consumer requirements.?
Customizable ¡§C Have a distinct form/function the spring/ball settings is often changed to match most applications.
Distinctive shaft sorts or sizes, we do AGMA/ANSI, SAE, & DIN bore/keyway and spline bore?¡¥s.
Being made from two counter wound springs implies it absorbs shock force without damage
Spring design and style permits greater angle of usage without damaging components?
ISO9001 2007 manufactured
The patented EP design and style permits for larger angle of utilization without deformation with all the torque transfer seen with Universal Joints, giving the performance of the Universal joint without the frequent servicing.
So how does it work? The design and style is quite simple, the sets of springs are counterwound so 1 tightens while another loosens and visa versa.
This will allow the coupling to work in each forward and reverse.
Its simplicity doesn?¡¥t end there, the only thing from the center of the coupling can be a single ball bearing this lets the coupling to pivot allowing for maximum flexibility, this indicates no bearings.
Bearings are a constant servicing issue, they cannot run in harsh environments like water, mud, sand, dust and dirt as any intrusion by any of those factors leads to rapid failure.
So no bearings signifies no continual servicing or worse replacement.
One 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 improved The flexible coupling is powered by the springs, but because it can be a pair of springs it effectively can be a metal bar, add the ball bearing it turns into a versatile metal bar.
So this implies extra torque and still have the flex that would destroy a standard universal or continual velocity joint.
High speed/low velocity ¡§C Now flex coupling engineering is split into 2 most important areas, large pace, lower torque, small angle of misalignment and decrease pace, larger torque, greater angle of misalignment.
Different couplings applications, same product ¡§C Flexible/High velocity couplings are Beam couplings, elastomeric, bellows couplings and jaw type couplings which can run at higher pace 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 quantity of torque these flex couplings can manage is quite small.
EP?¡¥s flexible coupling remains torsionally rigid at reduce angles at substantial velocity, with far far more torque than say a standard beam coupling, with all the added versatility if wanted.
Lower pace couplings like universal joints can work at high torque and larger degrees of misalignment but they have internal elements that need to become regularly maintained.
If not greasing for lubrication and bearing replacement and also the angles of misalignment they’re able to operate at is restricted as well, as too much will lead to bearing failure.
Our flex coupling can meet the higher torque demands and also the increased versatility while needing no maintenance as you would have to with using universal joints.
1 product multiple uses. Why would you use various products if you didnt need to when one product will do it all, a no servicing, substantial velocity, substantial torque, increased angle of misalignment capable versatile coupling.
Three models and counting ¡§C To date we have three models the czep150, czep300 plus the czep500
czep150 is capable of handling 150ft lbs of torque and be utilized 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 far more as time goes on.
We have all the splines and keyways you need to match your products.
We want to do the job with you, so speak to us and lets function 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 in the silicone fluid. Some plates are attached on 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 speed. The silicone fluid resists the shear generated in it through the plates with differentiating velocity, causing a torque transfer from the faster spinning axle towards the slower spinning axle. Therefore, slight velocity difference is needed for torque transfer.
If the rear wheels and driveshaft are slipping and turning faster than the front, friction involving the plates increases due for the generated shear during the fluid, slippage is reduced, the rear wheel spin is reduced as well as the torque in the input shaft is transferred to your front.
A viscous coupling might be put in in two ways:
viscous coupling acting instead of the center differential
Viscous Coupling Acting Instead Of the Center Differential
In this case, in normal conditions, all power is transferred to just a single axle. One particular part with the viscous coupling is connected to the driving axle, another part is linked 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 a 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 that has a slight delay, causing sudden change in 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 sensitive to uneven tread wear on front and rear tires. This is why Volvo first reduced the pre-tensioning in 2000 and 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 energy to all wheels and lets them turn at distinctive speeds while cornering. When excessive wheelspin takes place on 1 in the axles, viscous coupling locks the differential and equalizes the speeds of both axles. Torque is transferred to wheels that have traction. This is actually a full-time all wheel drive system.
Viscous coupling can also be integrated into the rear differential.
Precision Flexible Shaft Couplings
Clamping Precision Versatile Shaft Couplings
Designed to grip evenly around your shaft, these couplings supply more holding power than set screw couplings without marring the shaft.
Set Screw Precision Flexible 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 present extra holding power than set screw couplings without marring the shaft.
Set Screw Vibration-Damping
Precision Versatile Shaft Couplings
Set Screw Vibration-Damping Precision Versatile Shaft Couplings
Just about every hub includes a set screw, which bites into your shaft to hold the coupling in place.
High-Misalignment Vibration-Damping
Precision Flexible Shaft Couplings
High-Misalignment Vibration-Damping Precision Flexible Shaft Couplings
Also called double-loop couplings, these have a flexible center that decreases vibration and compensates for substantial parallel and angular shaft misalignment.
Servomotor Precision Versatile Shaft Couplings
In a position to handle high twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications.
High-Speed Precision Versatile Shaft Couplings
With a bellows between two hubs, these couplings deal with all kinds 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 additional misalignment than other precision couplings?auseful for low-torque, high-precision applications like instrumentation and motion control.
Electrically Isolating Servomotor
Precision Flexible Shaft Couplings
Electrically Isolating Servomotor Precision Versatile 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 manage four times more pace than standard servomotor couplings.
Flexible Shaft Couplings
Set Screw Flexible Shaft Couplings
Each 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 offer far more holding power than set screw couplings without marring the shaft.
High-Torque Set Screw Versatile Shaft Couplings
The thick split spider on these couplings can take on twice as much torque as standard spiders, extending the existence of bearings, seals, and motors.
Clamping High-Parallel-Misalignment
Versatile Shaft Couplings
Clamping High-Parallel-Misalignment Versatile Shaft Couplings
Designed to grip evenly around your shaft, these couplings provide a lot more holding energy than set screw couplings without marring the shaft.
Set Screw High-Parallel-Misalignment
Versatile Shaft Couplings
Set Screw High-Parallel-Misalignment Versatile Shaft Couplings
Each hub includes a set screw, which bites into your shaft to hold the coupling in place.
High-Angular-Misalignment Flexible Shaft Couplings
Also known as Schmidt couplings, these manage larger angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they’re generally employed with conveyor rollers and roller feeds in printing and packaging machines.
Machinable-Bore Versatile Shaft Couplings
Customize the bore of these versatile 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 flexible spring steel wraps around the teeth of both 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 Flexible Heat-Resistant Shaft Couplings
Versatile Shaft Couplings for Continuous Motion
High-Speed Vibration-Damping
Flexible Shaft Couplings
High-Speed Vibration-Damping Flexible 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
By using a rugged roller-chain design, these couplings present excellent torque and angular misalignment capacities.
Ultra-High-Torque Versatile Shaft Couplings
Using a rigid gear design, these steel couplings transmit far more torque than other couplings in the same size.
Lightweight Flexible Shaft Couplings
Produced with lightweight nylon sleeves, these gear couplings demand 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 1 half of these couplings to the other; there?¡¥s no contact amongst the elements, so they won?¡¥t wear. Couplings compensate for angular and parallel misalignment.


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