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 most important classes: Material Flexing and Mechanical Flexing. The materials flexible styles obtain their flexibility from stretching or compressing a resilient material, including rubber, or through the flexing of thin metallic discs or grid. Material flexing couplings don’t require 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.

Materials Flexing Couplings
Material flexing couplings normally never require lubrication and operate in shear or compression and are capable 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 usually a material flexing coupling that transmits torque thru compression of an elastomeric spider insert positioned concerning two intermeshing jaws.
Flex element is generally manufactured from NBR, polyurethane, Hytrel or Bronze
Accommodates misalignment
Transmits torque
Applied for torsional dampening (vibration)
Low torque, standard function applications
– Sleeve Coupling
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The sleeve coupling transmits minimal to medium torque among connected products in shear via an elastomeric insert with male splines that mate with female hub splines. The insert material is ordinarily EPDM, Neoprene or Hytrel and the insert could be a one or two piece design.
Reasonable misalignment
Torsional dampening (vibration)
Finish float with slight axial clearance
Reduced to medium torque, common goal applications
– Tire Coupling
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These couplings possess a rubber or polyurethane element connected to two hubs. The rubber element transmits torque in shear.
Lowers transmission of shock loads or vibration.
Substantial misalignment capacity
Easy assembly w/o moving hubs or linked gear
Moderate to large pace operation
Broad range of torque capacity
– Disc Coupling
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The disc coupling?¡¥s principle of operation has the torque transmitted via flexing disc aspects. It operates by means of stress and compression of chorded segments on a frequent bolt circle bolted alternately involving the drive and driven side. These couplings are ordinarily comprised of two hubs, two discs packs, and also 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 really a accurate limited finish float design
? A zero backlash layout
? High velocity rating and balance
– Diaphragm Coupling
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Diaphragm couplings use a single or possibly a series of plates or diaphragms for your flexible members. It transmits torque from the outdoors diameter of a flexible plate for the within diameter, across the spool or spacer piece, and after that from inside to outdoors diameter. The deflection in the outer diameter relative on the inner diameter is what occurs when the diaphragm is topic to misalignment. For instance, axial displacement attempts stretch the diaphragm which results in a mixture of elongations and bending in the diaphragm profile.
? Enables angular, parallel and high axial misalignments
? Utilized in higher torque, substantial pace applications
Mechanical Flexing Couplings
The mechanical flexing couplings accept misalignment from rocking, rolling or sliding of metal surfaces. All metal mechanical flexing couplings call for lubrication.
Examples of mechanical flexing couplings are gear, grid and roller chain couplings.
– Gear Couplings
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Gear couplings transmit the highest amount of torque as well as the highest volume of torque during the smallest diameter of any flexible 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 collectively. Gear couplings accommodate angular and axial misalignment from the rocking and sliding with the crowned gear teeth against the mating sleeve teeth. Parallel misalignment is accommodated by having two adjacent hub/sleeve flex factors. Gear couplings need periodic lubrication based on the application. They can be delicate to lubrication failures but when effectively installed and maintained, these couplings have a support life of 3 to five many years and in some instances they’re able to final for decades.
– Grid Couplings
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Grid couplings consist of two radially slotted hubs that mesh using a serpentine strip of spring steel the grid supplies torsional damping and versatility of an elastomer however the strength of steel. Grid couplings transmit torque and accommodate angular, parallel and axial misalignment from a single hub for the other through the rocking and sliding of the tapered grid 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 among contacting hub and grid metal components, lubrication is required.
– Roller Chain Coupling
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Roller Chain variety couplings consist of two radially sprocketed hubs that engage a strand of double pitch roller chain. Chain couplings are made use of for very low to moderate torque and pace applications. The meshing with the sprocket teeth and chain transmits torque and the linked clearances accommodate angular, parallel and axial misalignment.

Chain couplings require periodic lubrication based on the application. The lubrication is normally brushed onto the chain and a cover is used to aid keep the lubrication on the coupling.
To find out more about each of the various kinds of couplings, visitthe EP Coupling Webpage.
Mechanical Electrical power Transmission ¡§C Shaft Coupling substitute technologies.
Replaces Spicer, Lovejoy, Beam, Bellows and Jaw variety shaft couplings
EP Coupling could be the newest in shaft coupling design and style, beam, bellows and jaw couplings all operate at substantial velocity but very low angle of misalignment.
To the other end universal joints can deal with higher quantities of misalignment but at decrease speeds and constant servicing.
EP Coupling being a hybrid flexible coupling can do both.
Bettering on present coupling technologies we supply many different versions which permits a 0 to 25?? operational angle of utilization
No internal parts ¡§C No bearings to become regularly lubricated and replace , this saves you money and time.
One particular Piece style and design indicates no broken yokes or hubs.
Substantial speed- Runs at up to 7000 RPM
Torsionally rigid at very low angles of misalignment
Scalable ¡§C the EP unit may be scaled up or down to suit individual client necessities.?
Customizable ¡§C Have a particular form/function the spring/ball settings may be altered to match most applications.
Unique shaft kinds or sizes, we do AGMA/ANSI, SAE, & DIN bore/keyway and spline bore?¡¥s.
Being produced from two counter wound springs usually means it absorbs shock force without damage
Spring design permits greater angle of utilization without damaging elements?
ISO9001 2007 manufactured
The patented EP design will allow for larger angle of utilization without deformation together with the torque transfer seen with Universal Joints, giving the performance of a Universal joint without the consistent servicing.
So how does it work? The style is quite simple, the sets of springs are counterwound so one particular tightens while another loosens and visa versa.
This allows the coupling to do the job in the two forward and reverse.
Its simplicity doesn?¡¥t finish there, the only thing within the center of your coupling is actually a single ball bearing this permits the coupling to pivot allowing for maximum flexibility, this usually means no bearings.
Bearings are a continuous 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 means no continuous maintenance or worse replacement.
One particular piece layout ¡§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 much better The flexible coupling is powered through the springs, but because it is really a pair of springs it effectively can be a metal bar, add the ball bearing it turns into a flexible metal bar.
So this suggests more torque and still have the flex that would destroy a standard universal or continuous velocity joint.
High speed/low velocity ¡§C Now flex coupling technological innovation is split into 2 main areas, large speed, minimal torque, small angle of misalignment and reduced pace, increased torque, higher angle of misalignment.
Different couplings applications, same product ¡§C Flexible/High pace couplings are Beam couplings, elastomeric, bellows couplings and jaw variety 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 volume of torque these flex couplings can deal with is quite small.
EP?¡¥s versatile coupling remains torsionally rigid at reduce angles at higher velocity, with far extra torque than say a standard beam coupling, together with the added flexibility if required.
Reduce speed couplings like universal joints can perform at high torque and larger degrees of misalignment but they have inner components that need for being constantly maintained.
If not greasing for lubrication and bearing substitute and also the angles of misalignment they are able to function at is limited as well, as too much will lead to bearing failure.
Our flex coupling can meet the larger torque demands and also the increased versatility while needing no upkeep 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 a single product will do it all, a no upkeep, high pace, large torque, greater angle of misalignment capable flexible coupling.
Three models and counting ¡§C To date we have 3 models the czep150, czep300 plus 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 take care of 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 products.
We want to function with you, so contact us and lets work 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 within 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 pace. The silicone fluid resists the shear generated in it through the plates with differentiating pace, causing a torque transfer through the faster spinning axle to your 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 between the plates increases due for the generated shear from the fluid, slippage is reduced, the rear wheel spin is reduced as well as torque from the input shaft is transferred towards the front.
A viscous coupling can be put in in two ways:
viscous coupling acting instead of the center differential
Viscous Coupling Acting Instead Of a Center Differential
In this case, in normal conditions, all electrical power is transferred to just one axle. One part with the viscous coupling is connected for the driving axle, another part is linked for the driven axle. When driving wheels slip, viscous coupling locks and torque is transferred on 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 which has 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 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 energy to all wheels and lets them turn at diverse speeds while cornering. When excessive wheelspin happens on one particular from the axles, viscous coupling locks the differential and equalizes the speeds of both 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 deliver a lot more holding energy 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 Versatile Shaft Couplings
Clamping Vibration-Damping Precision Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings give a lot more holding power than set screw couplings without marring the shaft.
Set Screw Vibration-Damping
Precision Versatile Shaft Couplings
Set Screw Vibration-Damping Precision Flexible 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 substantial 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
Having a bellows amongst two hubs, these couplings handle all sorts of misalignment and therefore are good for precision stepper and encoder motion-control applications.
High-Misalignment Precision
Flexible 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 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 elements 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
Flexible Shaft Couplings
High-Speed Servomotor Precision Flexible Shaft Couplings
Connect shafts and ball screws to high-speed servomotors and stepper motors?athese shaft couplings handle four times additional speed 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 Versatile Shaft Couplings
Designed to grip evenly around your shaft, these couplings deliver extra holding electrical 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 lifestyle 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 offer far 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
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 larger angular misalignment than other three-piece couplings. Good for applications with varying shaft misalignment, they’re typically used 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 Flexible 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 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 within the rubber will set off a metal detector, alerting you to your 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 Versatile Shaft Couplings
A flexible tire on these couplings safeguards parts on your shafts by reducing vibration and shock.
High-Torque Flexible Shaft Couplings
That has a rugged roller-chain style, these couplings present excellent torque and angular misalignment capacities.
Ultra-High-Torque Versatile Shaft Couplings
That has a rigid gear design, these steel couplings transmit extra torque than other couplings from the same size.
Lightweight Versatile 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 1 half of these couplings on the other; there?¡¥s no contact in between the parts, so they won?¡¥t wear. Couplings compensate for angular and parallel misalignment.