Flexible coupling

A coupling is a gadget used for connecting two shafts together at their ends for the intended purpose of transmitting power.
Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.
The primary reason for couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end motion or both.
By careful selection, installation and maintenance of couplings, substantial savings can be made in decreased maintenance costs and downtime.
3 main types of couplings:
1. Rigid coupling a rigid coupling is definitely a unit of hardware used to join two shafts within a electric motor or mechanical program. It could be used for connecting two separate systems, such as a electric motor and a generator, or even to fix a connection within a single program. A rigid coupling can also be added between shafts to lessen shock and use at the main point where the shafts meet.
When joining shafts within a machine, mechanics may choose between flexible and rigid couplings. While flexible units present some movement and give between the shafts, rigid couplings will be the most reliable choice for precise alignment and protected hold. By specifically aligning the two shafts and holding them firmly set up, rigid couplings help to maximize performance and raise the expected existence of the machine. These rigid couplings are available in two basic designs to fit the desires of different applications. Sleeve-style couplings will be the least expensive and easiest to make use of. They consist of an individual tube of material with an inner size that’s equal in proportions to the shafts. The sleeve slips over the shafts therefore they meet in the middle of the coupling. A number of set screws can be tightened so they touch the top of each shaft and hold them set up without passing all the way through the coupling.
Clamped or compression rigid couplings can be found in two parts and fit together around the shafts to form a sleeve. They provide more versatility than sleeved models, and can be used on shafts that are fixed in place. They generally are large enough to ensure that screws can move all the way through the coupling and into the second half to ensure a secure hold.
Flanged rigid couplings are designed for heavy loads or industrial equipment. They contain short sleeves encircled by a perpendicular flange. One coupling is placed on each shaft therefore the two flanges fall into line face to encounter. A series of screws or bolts can then be installed in the flanges to hold them collectively. Because of the size and durability, flanged products can be used to bring shafts into alignment before they are joined collectively. Rigid couplings are used when precise shaft alignment is required; shaft misalignment will impact the coupling’s performance as well as its life.
2. Flexible coupling flexible couplings are accustomed to transmit torque in one shaft to another when both shafts are somewhat misaligned. Flexible couplings can accommodate varying examples of misalignment up to 3° and some parallel misalignment. Furthermore, they can also be utilized for vibration damping or noise reduction.This coupling is used to safeguard the driving and driven shaft members against harmful effects produce due to misalignment of the shafts, sudden shock loads, shaft expansion or vibrations etc.
3. Torque limiter coupling made to slip the torque out from the shaft to prevent harm to the engine or the application form

What is the difference between rigid coupling and flexible coupling?
Couplings are split into classes: Rigid and Flexible. As compared withflexible couplings, rigid couplings have limited program. Rigid couplings do not have the ability to compensate for shaft misalignments and so are therefore used where shafts already are positioned in exact lateral and angular alignment.
What are the advantages of flexible coupling?
Versatile couplings accomplish the objective of any kind of coupling, but their advantageover rigid couplings is definitely they accommodate the unavoidable misalignment between shafts in a few machinery. Versatile couplings also allow for a amount of axial movement between the coupled shafts as may occur due to thermal expansion.
What are the types of coupling?
What is Coupling? Types of Shaft Couplings
Rigid Couplings.
Versatile or Compensating Couplings.
Clutches to are a type of Coupling – We will the working on them separately.
Flanged Pin Bush Couplings.
Bibbly Coupling.
Gear Tooth Coupling.
Tyre couplings.
Elastomeric Couplings – This includes jaw type and S-flex couplings.
Couplings are devices used to connect two shafts together and so are divided into two categories: Rigid and Flexible. Both are used for the purpose of transmitting power, rigid couplings being even more limited in applications in comparison with versatile couplings. Rigid couplings are utilized where shafts are already positioned in specific lateral and angular alignment. Their design will not enable any misalignment between shafts, but are generally able to transmit even more power than versatile couplings. Versatile couplings are created to accommodate misalignment between shafts and different types of load circumstances. Many styles and types of couplings can be found. For successful coupling selection, application conditions should be clearly understood.


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