Shaft Couplings

Forms of Couplings
Class: Couplings
Write-up Tags:Couplingcouplingsdiaphragm couplingsdisc couplingsgear couplingsgrid couplingsjaw couplingsmaterial flexing couplingsmechanical flexing couplingsroller chain couplingssleeve couplingstire couplingstypes of couplings
Coupling fall into two key classes: Material Flexing and Mechanical Flexing. The materials flexible kinds obtain their flexibility from stretching or compressing a resilient material, for instance rubber, or from the flexing of thin metallic discs or grid. Material flexing couplings usually do not demand 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 call for lubrication.

Material Flexing Couplings
Materials flexing couplings typically usually do not need lubrication and operate in shear or compression and are capable to accept angular, parallel and axial misalignment.

Examples of materials flexing couplings are jaw, sleeve, tire, disc, grid and diaphragm couplings.
– Jaw Couplings
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The jaw coupling is often a materials flexing coupling that transmits torque thru compression of an elastomeric spider insert positioned in between two intermeshing jaws.
Flex component is typically manufactured from NBR, polyurethane, Hytrel or Bronze
Accommodates misalignment
Transmits torque
Made use of for torsional dampening (vibration)
Very low torque, standard purpose applications
– Sleeve Coupling
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The sleeve coupling transmits lower to medium torque involving connected tools in shear by an elastomeric insert with male splines that mate with female hub splines. The insert material is usually EPDM, Neoprene or Hytrel plus the insert generally is a a single or two piece design and style.
Reasonable misalignment
Torsional dampening (vibration)
End float with slight axial clearance
Reduced to medium torque, standard goal applications
– Tire Coupling
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These couplings have a rubber or polyurethane component linked to two hubs. The rubber component transmits torque in shear.
Reduces transmission of shock loads or vibration.
High misalignment capability
Quick assembly w/o moving hubs or connected gear
Moderate to higher velocity operation
Wide array of torque capacity
– Disc Coupling
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The disc coupling?¡¥s principle of operation has the torque transmitted via flexing disc components. It operates as a result of tension and compression of chorded segments on a widespread bolt circle bolted alternately among the drive and driven side. These couplings are typically comprised of two hubs, two discs packs, along with a center member. A single disc pack can accommodate angular and axial misalignment. Two disc packs are required to accommodate parallel misalignment.
? Enables angular parallel and axial misalignment
? Is often a genuine constrained finish float style and design
? A zero backlash style and design
? High speed rating and balance
– Diaphragm Coupling
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Diaphragm couplings use a single or a series of plates or diaphragms for the flexible members. It transmits torque from the outside diameter of a flexible plate to the inside diameter, throughout the spool or spacer piece, then from inside to outside diameter. The deflection with the outer diameter relative towards the inner diameter is what happens when the diaphragm is topic to misalignment. For example, axial displacement attempts stretch the diaphragm which benefits in a combination of elongations and bending of the diaphragm profile.
? Permits angular, parallel and high axial misalignments
? Utilized in higher torque, higher pace 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 quantity of torque along with the highest sum of torque in the smallest diameter of any flexible coupling.

Every single coupling includes two hubs with crowned external gear teeth. The hubs mesh with two internally splined flanged sleeves which are bolted with each other. Gear couplings accommodate angular and axial misalignment through the rocking and sliding of your crowned gear teeth towards the mating sleeve teeth. Parallel misalignment is accommodated by possessing two adjacent hub/sleeve flex points. Gear couplings need periodic lubrication depending on the application. They're sensitive to lubrication failures but if correctly set up and maintained, these couplings have a service lifestyle of 3 to 5 years and in some instances they are able to final for many years.
– Grid Couplings
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Grid couplings consist of 2 radially slotted hubs that mesh using a serpentine strip of spring steel the grid supplies torsional damping and flexibility of an elastomer but the strength of steel. Grid couplings transmit torque and accommodate angular, parallel and axial misalignment from one hub for the other by the rocking and sliding of the tapered grid while in the mating hub slots. The grid cross part is usually tapered for improved hub get in touch with and less complicated assembly. As there's movement between contacting hub and grid metal components, lubrication is required.
– Roller Chain Coupling
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Roller Chain style 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 your sprocket teeth and chain transmits torque and the related clearances accommodate angular, parallel and axial misalignment.

Chain couplings require periodic lubrication based on the application. The lubrication is ordinarily brushed onto the chain plus a cover is applied to help maintain the lubrication on the coupling.
To understand far more about each of the various kinds of couplings, visitthe EP Coupling Web page.
Mechanical Energy Transmission ¡§C Shaft Coupling replacement technologies.
Replaces Spicer, Lovejoy, Beam, Bellows and Jaw style shaft couplings
EP Coupling may be the newest in shaft coupling design and style, beam, bellows and jaw couplings all operate at large pace but very low angle of misalignment.
Within the other end universal joints can manage greater quantities of misalignment but at reduced speeds and continual servicing.
EP Coupling being a hybrid versatile coupling can do each.
Enhancing on existing coupling engineering we provide numerous diverse versions which enables a 0 to 25?? operational angle of utilization
No internal elements ¡§C No bearings to get consistently lubricated and substitute , this saves you time and money.
One particular Piece layout 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 can be scaled up or down to suit person buyer requirements.?
Customizable ¡§C Have a certain form/function the spring/ball settings might be altered to match most applications.

Being made from two counter wound springs implies it absorbs shock force without damage
Spring style allows greater angle of utilization without damaging parts?
ISO9001 2007 manufactured
The patented EP style and design will allow 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 consistent maintenance.
So how does it operate? The design and style is quite simple, the sets of springs are counterwound so one particular tightens while another loosens and visa versa.
This will allow the coupling to get the job done in both forward and reverse.
Its simplicity doesn?¡¥t finish there, the only thing inside the center of the coupling is often a single ball bearing this lets the coupling to pivot allowing for maximum flexibility, this suggests 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 components leads to rapid failure.
So no bearings suggests no frequent servicing or worse replacement.
One particular 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 far better The versatile coupling is powered from the springs, but because it is usually a pair of springs it effectively can be a metal bar, add the ball bearing it turns into a versatile metal bar.
So this indicates additional torque and still have the flex that would destroy a standard universal or frequent velocity joint.
Substantial speed/low speed ¡§C Now flex coupling technology is split into two most important areas, higher speed, low torque, small angle of misalignment and reduce velocity, higher torque, greater angle of misalignment.
Various couplings applications, same product ¡§C Flexible/High pace couplings are Beam couplings, elastomeric, bellows couplings and jaw style couplings which can run at large speed 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 take care of is quite small.
EP?¡¥s flexible coupling remains torsionally rigid at reduce angles at large pace, with far more torque than say a standard beam coupling, with the added flexibility if required.
Reduce velocity couplings like universal joints can do the job at substantial torque and larger degrees of misalignment but they have inner parts that need to get constantly maintained.
If not greasing for lubrication and bearing replacement and also the angles of misalignment they can operate at is constrained as well, as too much will lead to bearing failure.
Our flex coupling can meet the larger torque demands as well as the increased flexibility while needing no maintenance as you would have to with using universal joints.
1 product multiple uses. Why would you use different products if you didnt need to when one product will do it all, a no upkeep, higher speed, higher torque, increased angle of misalignment capable versatile coupling.
Three models and counting ¡§C To date we have 3 models the czep150, czep300 as well as the czep500
czep150 is capable of handling 150ft lbs of torque and be applied at 25??.
czep300 is capable of handling 300 ft lbs of static torque and operate at angles of 25??
czep500 can handle 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 fit your tools.
We want to work with you, so make contact with us and lets work together 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 to the front axle driveshaft and some are attached for the 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 from the plates with differentiating pace, causing a torque transfer from your faster spinning axle on the slower spinning axle. Therefore, slight speed difference is required for torque transfer.
If the rear wheels and driveshaft are slipping and turning faster than the front, friction among the plates increases due for the generated shear from the fluid, slippage is reduced, the rear wheel spin is reduced and the torque from the input shaft is transferred on the front.
A viscous coupling might be installed 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 electrical power is transferred to just a single axle. 1 part from the viscous coupling is connected towards the driving axle, another part is connected to the driven axle. When driving wheels slip, viscous coupling locks and torque is transferred to the other axle. This is an automatic all wheel drive system.
The disadvantage of a viscous coupling is that it engages too slowly and makes it possible for 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 inside 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 after that 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 diverse speeds while cornering. When excessive wheelspin occurs on one particular with the axles, viscous coupling locks the differential and equalizes the speeds of each axles. Torque is transferred to wheels that have traction. This is 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 offer a lot more holding energy 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 provide far more holding electrical 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 Versatile Shaft Couplings
High-Misalignment Vibration-Damping Precision Versatile Shaft Couplings
Also called double-loop couplings, these have a versatile center that minimizes vibration and compensates for higher parallel and angular shaft misalignment.
Servomotor Precision Flexible Shaft Couplings
Capable to deal with substantial twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications.
High-Speed Precision Versatile Shaft Couplings
That has a bellows concerning 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 extra misalignment than other precision couplings?auseful for low-torque, high-precision applications such as instrumentation and motion control.
Electrically Isolating Servomotor
Precision Flexible 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 parts 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 Versatile Shaft Couplings
Connect shafts and ball screws to high-speed servomotors and stepper motors?athese shaft couplings manage four times more speed than standard servomotor couplings.
Flexible Shaft Couplings
Set Screw Versatile Shaft Couplings
Each and every hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place.
Clamping Versatile Shaft Couplings
Designed to grip evenly around your shaft, these couplings give far more holding energy 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 lifestyle of bearings, seals, and motors.
Clamping High-Parallel-Misalignment
Versatile Shaft Couplings
Clamping High-Parallel-Misalignment Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings offer 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 Flexible Shaft Couplings
Just about every 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 handle increased angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they're normally 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 versatile spring steel wraps around the teeth of the two hubs to absorb sharp, momentary load increases that can come from motor startups, emergency braking, or sudden impact with hard objects.
Metal-Detectable Versatile Shaft Couplings
Designed for use in food-processing applications, where a fraying spider could contaminate a batch, these couplings possess 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 Versatile
Heat-Resistant Shaft Couplings
Cleaned and Bagged Flexible Heat-Resistant Shaft Couplings
Flexible Shaft Couplings for Continuous Motion
High-Speed Vibration-Damping
Versatile Shaft Couplings
High-Speed Vibration-Damping Flexible Shaft Couplings
Use these gear-shaped couplings for high-speed and high-torque applications.
Vibration-Damping Versatile Shaft Couplings
A flexible tire on these couplings safeguards elements on your shafts by reducing vibration and shock.
High-Torque Versatile Shaft Couplings
By using a rugged roller-chain design and style, these couplings supply excellent torque and angular misalignment capacities.
Ultra-High-Torque Versatile Shaft Couplings
That has a rigid gear style, these steel couplings transmit far more torque than other couplings of the same size.
Lightweight Flexible Shaft Couplings
Made with lightweight nylon sleeves, these gear couplings need 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 to the other; there?¡¥s no contact among the components, so they won?¡¥t wear. Couplings compensate for angular and parallel misalignment.