Shaft Couplings

Forms of Couplings
Category: Couplings
Posting 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 material flexible sorts acquire their flexibility from stretching or compressing a resilient material, which include rubber, or from the flexing of thin metallic discs or grid. Material flexing couplings usually do not need lubrication, with all the exception of grid couplings.

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

Materials Flexing Couplings
Material flexing couplings ordinarily will not need lubrication and operate in shear or compression and are ready 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 really a materials flexing coupling that transmits torque thru compression of an elastomeric spider insert placed between two intermeshing jaws.
Flex component is usually manufactured from NBR, polyurethane, Hytrel or Bronze
Accommodates misalignment
Transmits torque
Employed for torsional dampening (vibration)
Low torque, common purpose applications
– Sleeve Coupling
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The sleeve coupling transmits minimal to medium torque among linked tools in shear through an elastomeric insert with male splines that mate with female hub splines. The insert materials is typically EPDM, Neoprene or Hytrel as well as insert can be quite a one or two piece style.
Reasonable misalignment
Torsional dampening (vibration)
End float with slight axial clearance
Lower to medium torque, standard objective applications
– Tire Coupling
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These couplings possess a rubber or polyurethane component connected to two hubs. The rubber element transmits torque in shear.
Reduces transmission of shock loads or vibration.
Large misalignment capability
Uncomplicated assembly w/o moving hubs or linked products
Moderate to higher pace operation
Wide array of torque capacity
– Disc Coupling
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The disc coupling?¡¥s principle of operation has the torque transmitted by flexing disc elements. It operates by means of tension and compression of chorded segments on the widespread bolt circle bolted alternately involving the drive and driven side. These couplings are typically 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 desired to accommodate parallel misalignment.
? Will allow angular parallel and axial misalignment
? Can be a genuine restricted end float style and design
? A zero backlash design
? Higher velocity rating and balance
– Diaphragm Coupling
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Diaphragm couplings utilize just one or maybe a series of plates or diaphragms to the flexible members. It transmits torque from your outside diameter of the flexible plate to the inside diameter, across the spool or spacer piece, after which from within to outside diameter. The deflection of the outer diameter relative towards the inner diameter is what takes place once the diaphragm is subject to misalignment. For instance, axial displacement attempts stretch the diaphragm which success in a mixture of elongations and bending on the diaphragm profile.
? Enables angular, parallel and substantial axial misalignments
? Utilized in substantial 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 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 amount of torque from the smallest diameter of any versatile coupling.

Every single 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 by the rocking and sliding of your 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 depending on the application. They’re delicate to lubrication failures but when appropriately set up and maintained, these couplings have a services existence of 3 to five years and in some instances they might last for many years.
– Grid Couplings
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Grid couplings consist of 2 radially slotted hubs that mesh having a serpentine strip of spring steel the grid gives torsional damping and flexibility of an elastomer but the power of steel. Grid couplings transmit torque and accommodate angular, parallel and axial misalignment from one particular hub to your other by means of the rocking and sliding of a tapered grid while in the mating hub slots. The grid cross section is usually tapered for much better hub make contact with and simpler assembly. As there’s motion concerning contacting hub and grid metal components, lubrication is required.
– Roller Chain Coupling
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Roller Chain kind couplings include two radially sprocketed hubs that engage a strand of double pitch roller chain. Chain couplings are applied for very low to reasonable torque and speed applications. The meshing with the sprocket teeth and chain transmits torque and the associated 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 is applied to assist maintain the lubrication on the coupling.
To find out much more about all of the different types of couplings, visitthe EP Coupling Web page.
Mechanical Power Transmission ¡§C Shaft Coupling replacement technological innovation.
Replaces Spicer, Lovejoy, Beam, Bellows and Jaw form shaft couplings
EP Coupling will be the most current in shaft coupling style and design, beam, bellows and jaw couplings all function at substantial speed but very low angle of misalignment.
Over the other end universal joints are able to handle higher amounts of misalignment but at reduce speeds and frequent maintenance.
EP Coupling like a hybrid versatile coupling can do the two.
Strengthening on existing coupling technologies we present a variety of distinctive versions which allows a 0 to 25?? operational angle of usage
No inner parts ¡§C No bearings to be consistently lubricated and replace , this saves you money and time.
A single Piece style implies 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 individual purchaser requirements.?
Customizable ¡§C Have a certain form/function the spring/ball settings could be modified to fit most applications.
Distinctive shaft types or sizes, we do AGMA/ANSI, SAE, & DIN bore/keyway and spline bore?¡¥s.
Being manufactured from two counter wound springs suggests it absorbs shock force without damage
Spring style permits greater angle of utilization without damaging components?
ISO9001 2007 manufactured
The patented EP design and style lets for larger angle of utilization without deformation using the torque transfer seen with Universal Joints, giving the performance of the Universal joint without the continuous maintenance.
So how does it operate? The style and design is quite simple, the sets of springs are counterwound so one particular tightens while the other loosens and visa versa.
This allows the coupling to perform in both forward and reverse.
Its simplicity doesn?¡¥t end there, the only thing from the center from the coupling can be a single ball bearing this permits the coupling to pivot allowing for maximum versatility, this suggests no bearings.
Bearings are a constant upkeep issue, they cannot run in harsh environments like water, mud, sand, dust and dirt as any intrusion by any of those elements leads to rapid failure.
So no bearings usually means no consistent maintenance or worse replacement.
A single piece design ¡§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 superior The versatile coupling is powered from the springs, but because it is actually a pair of springs it effectively is usually a metal bar, add the ball bearing it turns into a versatile metal bar.
So this signifies extra torque and still have the flex that would destroy a standard universal or constant velocity joint.
High speed/low speed ¡§C Now flex coupling engineering is split into two key areas, substantial velocity, reduced torque, small angle of misalignment and reduce pace, higher torque, greater angle of misalignment.
Distinct couplings applications, same product ¡§C Flexible/High velocity couplings are Beam couplings, elastomeric, bellows couplings and jaw form couplings which can run at substantial 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 decrease angles at large velocity, with far more torque than say a standard beam coupling, with all the added versatility if desired.
Decrease pace couplings like universal joints can do the job at higher torque and larger degrees of misalignment but they have internal parts that need to be continuously maintained.
If not greasing for lubrication and bearing substitute and also the angles of misalignment they will function at is restricted as well, as too much will lead to bearing failure.
Our flex coupling can meet the higher torque demands along with the increased versatility while needing no servicing as you would have to with using universal joints.
One product multiple uses. Why would you use unique products if you didnt need to when one product will do it all, a no servicing, high speed, high torque, greater angle of misalignment capable versatile coupling.
Three models and counting ¡§C To date we have three models the czep150, czep300 and the czep500
czep150 is capable of handling 150ft lbs of torque and be used at 25??.
czep300 is capable of handling 300 ft lbs of static torque and operate at angles of 25??
czep500 can deal with 500ft lbs of static torque .
We are looking at what the market demands so bigger or smaller we will be adding additional as time goes on.
We have all the splines and keyways you need to match your equipment.
We want to function with you, so get hold of us and lets work with each other to solve your versatile coupling issues today.
Viscous coupling is filled with silicone and is not computer controlled. A series of plates with holes and slots turn within the silicone fluid. Some plates are attached to your 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 velocity. The silicone fluid resists the shear generated in it through the plates with differentiating velocity, 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 involving the plates increases due on the generated shear in the fluid, slippage is reduced, the rear wheel spin is reduced plus the torque through the input shaft is transferred on 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 a Center Differential
In this case, in normal conditions, all electrical power is transferred to just a single axle. One part of your viscous coupling is linked to the driving axle, another part is connected to your driven axle. When driving wheels slip, viscous coupling locks and torque is transferred to your other axle. This is an automatic all wheel drive system.
The disadvantage of the 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 using a slight delay, causing sudden change while 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 after which 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 takes place on one of your axles, viscous coupling locks the differential and equalizes the speeds of the two axles. Torque is transferred to wheels that have traction. This is often a full-time all wheel drive system.
Viscous coupling can also be integrated into the rear differential.
Precision Flexible Shaft Couplings
Clamping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings supply much 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 Versatile Shaft Couplings
Designed to grip evenly around your shaft, these couplings deliver extra holding energy than set screw couplings without marring the shaft.
Set Screw Vibration-Damping
Precision Flexible Shaft Couplings
Set Screw Vibration-Damping Precision Versatile Shaft Couplings
Each 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 Flexible Shaft Couplings
Also called double-loop couplings, these possess a flexible center that minimizes vibration and compensates for large parallel and angular shaft misalignment.
Servomotor Precision Versatile Shaft Couplings
Capable to handle high twisting forces as well as misalignment, these couplings are good for high-performance servomotor applications.
High-Speed Precision Flexible Shaft Couplings
With a bellows in between two hubs, these couplings take care of all sorts of misalignment and therefore are good for precision stepper and encoder motion-control applications.
High-Misalignment Precision
Versatile Shaft Couplings
High-Misalignment Precision Flexible 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 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 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 a lot more speed than standard servomotor couplings.
Flexible Shaft Couplings
Set Screw Flexible Shaft Couplings
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 supply far 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 daily life 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 give extra holding power 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 Versatile Shaft Couplings
Also known as Schmidt couplings, these deal with higher angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they’re generally used 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 flexible 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 within 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
Versatile 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 Flexible Shaft Couplings
A versatile tire on these couplings safeguards parts on your shafts by reducing vibration and shock.
High-Torque Flexible Shaft Couplings
By using a rugged roller-chain design, these couplings deliver excellent torque and angular misalignment capacities.
Ultra-High-Torque Versatile Shaft Couplings
Having a rigid gear design and style, these steel couplings transmit a lot more torque than other couplings in the same size.
Lightweight Versatile Shaft Couplings
Produced 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 one particular 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.


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