Conveying Quality
Couplings
Introduction
A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or objects.
Types of Coupling
Rigid coupling
Rigid coupling is used only whenever the misalignment between equipment shafts is very small or no misalignment is present in the system. When the equipment is appropriate to carry the reactionary load produced from trying to flex rigid couplings. This type of coupling mostly prefers for vertical applications such as vertical pump. In those cases, rigid couplings are a very effective means of connecting machine shafts. But the rigid couplings used to connect two shafts of two rotating equipment and that allow transmitting power and torque from one machine to another machine. That also can be used if machines that have shafts of different sizes.
Jaw couplings
The jaw coupling is a material flexing coupling that transmits torque through compression of an elastomeric spider insert placed between two intermeshing jaws.
sleeve coupling
The sleeve coupling transmits low to medium torque between connected equipment in shear through an elastomeric insert with male splines that mate with female hub splines. The insert material is typically epdm, neoprene or hytrel and the insert can be a one or two piece design.
Beam coupling
A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path resulting in a curved flexible beam of helical shape. Since it is made from a single piece of material, the beam style coupling does not exhibit the backlash found in some multi-piece couplings. Another advantage of being an all machined coupling is the possibility to incorporate features into the final product while still keep the single piece integrity.
disc coupling
The disc coupling’s principle of operation has the torque transmitted through flexing disc elements. It operates through tension and compression of chorded segments on a common bolt circle bolted alternately between the drive and driven side. These couplings are typically comprised of two hubs, two discs packs, and a center member. A single disc pack can accommodate angular and axial misalignment. Two disc packs are needed to accommodate parallel misalignment.
diaphragm coupling
Diaphragm couplings utilize 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, across the spool or spacer piece, and then from inside to outside diameter. The deflection of the outer diameter relative to the inner diameter is what occurs when the diaphragm is subject to misalignment. For example, axial displacement attempts stretch the diaphragm which results in a combination of elongations and bending of the diaphragm profile.
Roller chain coupling
Roller chain type couplings consist of two radially sprocketed hubs that engage a strand of double pitch roller chain. Chain couplings are used for low to moderate torque and speed applications. The meshing of 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 typically brushed onto the chain and a cover is used to help keep the lubrication on the coupling.
gear couplings
Gear couplings transmit the highest amount of torque and the highest amount of torque in the smallest diameter of any flexible coupling. Each coupling consists of two hubs with crowned external gear teeth. The hubs mesh with two internally splined flanged sleeves that are bolted together. Gear couplings accommodate angular and axial misalignment by the rocking and sliding of the crowned gear teeth against the mating sleeve teeth. Parallel misalignment is accommodated by having two adjacent hub/sleeve flex points. Gear couplings require periodic lubrication depending on the application. They are sensitive to lubrication failures but if properly installed and maintained, these couplings have a service life of 3 to 5 years and in some cases they can last for decades.
tire coupling
These couplings have a rubber or polyurethane element connected to two hubs. The rubber element transmits torque in shear. It reduces transmission of shock loads or vibration.
Flexible pin bush coupling
We are offering wide range of flexible pin bush flexible pin bush coupling to our customers. This product is manufactured under the tight surveillance of qualified professionals using top quality material and the latest techniques in tune with set market norms
Brake drum coupling
We offer an array of brake drum couplings that is manufactured using qualitative raw material sourced from reliable vendors. Our brake drum couplings are made from finest quality materials such as cast iron, alloy steel, stainless steel, mild steel and many more materials. Brake drum couplings provide two-fold point of flexible coupling as well as provided that brakedrum for increasing brake within the same space. The coupling can be used with all kinds of brakes with shoes; electromagnetic, thruster, band etc. The material of the couplings is high grade cast iron / carbon steel. We also offer brake drum couplings as per clients’ requirements and specifications. These brake drum couplings follow stringent quality tests before being dispatched to our clients.
Nylon gear coupling
Nylon gear coupling are available in various technical specifications and we also customize these couplings as per our client’s requirements and specifications. We offer these couplings at very economical prices.
Muff coupling
Muff couplings are the simplest type of rigid coupling for transmitting high torques at high speeds where misalignment is neither present nor desired. Our muff couplings are made from the best quality materials such as cast iron, stainless steel, alloy steel and many more materials and are available in various sizes. We also customize muff couplings as per our client’s requirements and specifications.
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