Encoder Couplings: Some Facts
Encoder couplings used for connecting shafts come in many different styles, sizes, and types – the one you require will depend on your application. There are rigid couplings that are suited for transmitting power, and then there are flexible types to accommodate movement.
Finding the right type of encoder coupling is important for protecting your devices – pumps, motors, and systems. Shafts need to be properly aligned to avoid unnecessary wear and tear, and to avoid too much shifting due to machine vibration.
Encoder Shaft Coupling
Encoder shaft couplings connect two shafts together so that torque can transmit from one shaft to another. The movement of one shaft is then mimicked by the other because of the connection – they also help with transmitting power, which is their primary function. They have additional functions as well:
They can be used to absorb shock and vibration
Couplings can be used to absorb vibration and shock in machinery. They help to manage misalignments better and create flexible movement in applications.
Avoiding misalignment
Shaft misalignment can affect the performance of the coupling depending on how the shaft moves or aligns. In general, when a pump, generator or other piece of equipment is connected by a coupling, any misalignment between the two items increases stress on the shafts. Shaft misalignment can take many forms including:
- End Float – Both shafts have axial movement moving in and out
- Parallel misalignment – Two shafts both of which have different rotation axis
- Angular misalignment – This happens when the shafts are neither, parallel or coaxial
- Torsional flexibility – Caused by shock or vibration creating torsional movement in shafts
Most flexible couplings have flanges
In most instances, flexible couplings are constructed with two flanges, or two hubs, that connect to the shafts during pairing. The materials the couplings are made from can differ depending on the product, including spring discs, nylon, or mechanical connections such as universal joints or gear couplings.
The working environment will affect your choice of coupling
It’s important to remember that couplings can be affected by changes in temperatures, operating conditions, and movement. This is why it’s essential you choose the right type of product for the task to suit the equipment and the application. Consider the environment where the couplings will be working and take make relevant changes to your choice in coupling to ensure that these environmental factors are accounted for.
Couplings improve the efficiency of your equipment
Selecting the right type of flexible or rigid coupling can reduce stress on applications. This will prevent you having to replace shafts and couplings sooner.
ATI Systems provides a range of encoder couplings for different applications. Contact our team to explore our range of equipment and enquire about our other offerings.
