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Jaw Coupling Manufacturers

A jaw coupling is a broadly helpful power transmission coupling that likewise can be utilized in movement control of servo applications. It is intended to transmit torque by interfacing two shafts while damping framework vibrations and obliging misalignment, which shields different segments from harm.
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Structural Features of Jaw Coupling

Jaw couplings are composed of three parts: two metallic hubs and an elastomer insert called an element, commonly referred to as a “spider.” The three parts press fit together with a jaw from each hub fitted alternately with the lobes of the spider. Jaw coupling torque is transmitted through the elastomer lobes in compression.

The elastomer of the spider can be made in different materials and hardness, which allows the user to customize the coupling to serve their application best. Considerations for elastomer selection include the ability to dampen vibration, the ability to handle misalignment, operational temperature range, speed of equipment, and chemical conditions.

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Reasons to Consider Using Jaw Couplings

Jaw coupling hubs and spiders connect two drive shafts to transfer power while absorbing shock and vibration and accommodating misalignment. This helps to protect the components from damage. Jaw coupling assemblies consist of two hubs and a spider insert with a jaw from each hub fitted alternately with the lobes of the spider. Spider inserts can be replaced when they become worn or damaged. The coupling will continue to operate even if the spider insert fails, allowing the drive system to be properly shut down before replacing the spider.

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Zero-Backlash Design
Jaw couplings are a three-piece assembly comprised of two jaw coupling hubs that press fit onto a jaw coupling spider. The press fit concentrates forces on the center of the spider’s limbs and allows the coupling to operate with zero backlashes.
Low Replacement Cost
They serve as the wear element in jaw couplings and make for an inexpensive, simple replacement compared to other styles of coupling that require complete replacement at the end of their useable life.
High Customizability
Hubs with the same outer diameter can be mixed and matched and are manufactured in clamp or set screw styles, and can have inch, metric, keyed, or keyless bores. A selection of three elastomer spiders triples the potential combinations, giving designers a variety of ways to optimize their system.
Fail Safe Design
If the spider fails or is otherwise compromised the jaws of the hubs interlock for direct power transmission, allowing the machine to be shut down safely. When this type of failure occurs, the spider can be replaced allowing full coupling performance to be restored.

Products

Featured Jaw Couplings for Sale

XL Type High-Quality Jaw Flexible Couplings

Jaw couplings are compression coupling that controls motion by transmitting torque and damping vibrations that could cause damage to other system components. They are composed of a polyurethane-based elastomeric part called a spider that joins two hubs made of sintered metal, aluminum, standard steel, stainless steel, bronze, or iron. These three parts are press-fitted together, with a jaw from each hub fitting into the elastomeric element’s grooves.

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AL Type Aluminum Jaw Coupling

AL-type aluminum jaw coupling, the main body is made of high-strength aluminum alloy. It’s working occasions with frequent starting, forward and reverse rotation, medium and high speed, medium torque, and high reliability, such as metallurgy, mining, chemical industry, lifting, light industry, textile, water pump, fan, etc. Suitable for servo motor, stepper motor, spindle drive, lifting platform, machine tool drive, and gearbox motor.

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H Type Highest Torque Jaw Couplings

The H-type coupling is widely used in mechanical equipment, such as pump drives and drive systems. The metal parts of the H-type coupling are made of high-quality cast iron GG-25; simple structure, compact dimensions, easy to manufacture, low cost, convenient mounting, and dismounting. And its elastomer is made of synthetic rubber, which has a stable transmission of torque and a small embrittlement effect.
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SW Type Jaw Spider Flexible Coupling

Jaw couplings are composed of three parts: two metallic hubs and an elastomer insert called an element, commonly referred to as a “spider.” The three parts press fit together with a jaw from each corner fitted alternately with the lobes of the spider. Jaw coupling torque is transmitted through the elastomer lobes in compression. The elastomer of the spider can be made in different materials and hardness.
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SS Type Stainless Steel Curved Jaw Couplings

The curved jaw couplings can be used in many applications and as an all-purpose coupling. The basic design of the curved jaw couplings allows for a higher torque capacity in a compact design. The curved tooth has a greater contact area which gives it a high torque capacity and reduces edge pressure. It will accommodate axial, radial, and angular shaft misalignments. The hubs are produced from various materials, including aluminum, gray, iron, steel, sintered, and stainless steel.
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L Type Standard Jaw Coupling

L-type standard jaw coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). It consists of two standard L-type hubs and one spider. L-type standard jaw couplings are resistant to oil, dirt, grease, sand, and moisture and do not require lubrication. One drawback of jaw couplings is that they lack misalignment capability. Jaw couplings are used as motor couplings for pumps, gearboxes, compressors, blowers, mixers, and conveyors for industrial manufacturing applications.
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Pumps

Gearboxes

Compressors

Blowers

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FAQ

Knowledge About Jaw Coupling

The Working Principle of Jaw Coupling?

All elastomeric couplings are classified according to how their elastomeric elements transmit torque between driving and driven hubs – the element is either in compression or shear.

In jaw couplings, the element is loaded in compression between the jaws of mating hubs. These jaws operate in the same plane, with the driving hub jaws pushing towards the driven hub jaws. Legs of the elastomeric spider transmit and cushion the force between the driving and driven jaws by being compressed between them.

This contrasts to shear-type couplings, in which driving and driven hubs operate in separate planes, with the driving hub pulling the driven hub through an elastomeric element suspended between them. Here, the element transmits and cushions the force between hubs by being stretched between them.

Operating Temperature Range and Material of Jaw Coupling?

Jaw couplings are designed to operate without lubricant in many instances and function well in the presence of dirt and other particulates. Jaws can be manufactured in steel, aluminum, and stainless steel and often in bronze, ductile iron, and powdered metal. Spiders may be made of polyurethane, natural rubber, urethane, hytrel, and in special cases, soft metals such as bronze for low speed, high torque applications.

The involute teeth of the elastomeric inserts are crowned in order to avoid edge pressure on the tooth flanks and so avoid undesirable axial thrust. The puncture proof spider coupling can be loaded extremely high since the elastic elements are submitted to compression and not to bending moments of force. The elastomer gear ring, made of a newly developed polyurethane of various degrees of shore hardness, has important advantages in comparison with the standard polyurethanes. It is non-ageing, with resistance against hydrolysis (can be used in tropical conditions), non-abrasive, has a high self-damping effect and is also resistant to oil and ozone. It can be used with temperatures ranging from -40°C to +120°C.

There is a chart below to show the characteristics of each material commonly used for jaw couplings:

The Applications of Jaw Couplings?

Jaw couplings are resistant to oil, dirt, grease, sand, and moisture and do not require any lubrication. One drawback of jaw couplings is that they lack misalignment capability. Unlike a bellows coupling which is flexible, jaw couplings will come apart if the axial motion is too great. Angular or parallel misalignment can cause it to bear higher loads than other similar couplings. Jaw couplings have the basic shape of gear but are quite different from gear couplings. Jaw couplings do not use the large blunt teeth to move or rotate, as would be the case in a set of gears. Instead, they provide interlocking action for the spider and hub, keeping the assembly together while providing effective vibration dampening. Jaw couplings are used as motor couplings for pumps, gear boxes, compressors, blowers, mixers, and conveyors for industrial manufacturing applications.

Jaw Coupling Manufacturers and Suppliers

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