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A Brief Guide On The Different Types Of Gear Couplings Available
Couplings are used to attach two shafts at their ends. Precisely, these are mechanical devices that are used to transmit the torque in between the two non-coaxial shafts. Generally, gear couplings include a flexible joint that is joined to each of the shafts and there is a third shaft known as spindle which fixes the two joints. Well maintained and properly functioning gear couplings are very important for better performance of gears.
Well designed gear couplings are expected to take in the misalignment forces, thus saving some of the most important components from any kind of harm. A gear coupling generally includes a clutch with an input connection. The tension generated when the coupling connects the trailer and tractor units and the slippage of the clutch is well controlled in answer to monitored tension. This is very important to maintain the speed of the trailer unit when it is driven which is more or less same as the speed of the tractor unit.
Types of gear couplings
There are different types of gear couplings used in different types of machines, like:
Flexible couplings: Flexible couplings are very good in transmitting the torque efficiently while allowing radial, axial and angular misalignment as well. This kind of flexibility allows parts of coupling to move without much or no resistance at all even if some kind of misalignment occurs. This does not allow the development of any kind of bending or axial stresses. These are easy to install and they require no maintenance, no lubrication and offers noise less operation.
Rigid couplings: These are especially designed to fix the two shafts together so that there is no motion developed between them. This particular design is used for some specific kind of equipment that requires alignment of the two shafts. Rigid couplings are only used when the alignment between the two shafts can be maintained properly throughout the operation period.
Grid couplings: Grid couplings are generally made of corrugated steel grids that can be easily bent to balance the load brought by misalignment.
Chain couplings: These are not exactly gear couplings but are similar to it. In chain couplings, a roller chain connects the sprockets on the end of each of the shaft.
Solid and magnetic coupling: Solid couplings are firm structures and magnetic and solid couplings do not require lubrication. They allow the two shafts to stay connected to transmit the torque.
Features of gear couplings
A perfect gear coupling should have the following features:
- No reaction or backlash
- Low weight
- High torque capacity
- Reduce vibration
- A good number of designs of shaft attachments
- A space-saving size
- High RPM that is well balanced to AGMA categories
- Should be torsionally rigid
- A high torque
So, here are the different types of gear couplings available and a brief study to help you understand heir uses.
About the Author
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