Couplings are devices used to connect two rotating shafts in order to transmit power and provide an easy and quick connection or disconnection between the two components. Because they play such a pivotal role, couplings can make the difference between smoothly running machinery and downtime on the factory floor while you make costly repairs.
A properly chosen and installed shaft coupling should have the following properties:
- Can be easily connected or disconnected.
- Transmits the full power of the shaft.
- Holds the shafts in perfect alignment.
- Has no projecting parts.
When choosing replacement couplings, it’s critical to match the appropriate coupling to the job, whether you need flexibility, lower maintenance or high torque load protection. Here’s an overview of some basic types of couplings and how they differ:
Gear couplings. These types of couplings involve a flexible joint that is fixed to each shaft, which are both connected by a third shaft, called a spindle. Gear couplings allow for angular displacement and have high torque densities. Falk produces Lifelign gear couplings, an innovative design that features high bore capacities and can offer savings up to 35 percent over similarly-styled brands.
Grid couplings. Grid couplings are a simple, cost-effective alternative to gear couplings. Falk grid couplings are easier to install, and because of their innovative “replace in place” design, there is no need to move or re-align hubs or shafts. Grid couplings also have longer life due to their unique design and manufacturing process.
Fluid couplings. Considered by many to be the latest in coupling technology, fluid couplings provide smooth acceleration, mechanical overload protection and protection against shock loads. The Falk True Torque fluid couplings allow very precise startup characteristics and come in a variety of sizes.
Elastomer couplings. Elastomer couplings are made with a polyurethane element that’s flexible to minimize the potential for misalignment. Their high-tech design allows for easy replacement and higher capacity ratings at a competitive cost. They’re also non-lubricated, which means they don’t require the maintenance of other couplings.
The ideal coupling for any application is determined by a variety of factors, including stiffness, balance, operating speed, shaft gaps, bore fit options and environmental conditions. If you’re not sure how to select the ideal coupling for your job, consult a qualified power transmission specialist.
Posted under Products/Services, Uncategorized on Friday, January 21st, 2011