Power Transmission - Couplings

Our advanced selection of power transmission couplings includes many varieties of general purpose flexible beam couplings, bellows couplings and jaw couplings, as well as various K and membrane varieties.

We also stock a full selection of accessories such as torque discs, flanges, inserts, and joints available from leading brands including Ruland, Huco, Lenze, and RS Pro.

What are the main differences between common transmission coupling types?

  • Backlash-free, general purpose flexible beam couplings are used in a variety of motion-control applications, from aviation and lab equipment to robotics and medical devices.
    • They’re especially commonly found where a motor is connected to a pump, or in numerous types of factory automation equipment and machine tools, where their key role is to help transmit power from a motor source.

  • Bellows couplings are designed and milled to create a low inertia, zero-backlash coupling that needs less maintenance over time.
    • Bellows couplings can accommodate all forms of misalignment and have a balanced design for reduced vibration at high speeds.
    • They’re best suited to applications where precise positioning is required, such as in material handling or general automation and assembly.

  • Jaw couplings are used in electrical motor and internal combustion systems to connect two shafts and transmit torque smoothly with reduced power loss.
    • Jaw couplings are designed to prevent sudden shock loading, and to accommodate shaft misalignment due to thermal expansion or manufacturing error.

  • We also stock a range of other transmission coupling types, including:
    • Barrel gear coupling hubs and sleeves
    • CV boots
    • HRC coupling flanges and inserts
    • Oldham style coupling hubs and torque disks
    • Universal joints and universal/lateral offset couplings

Guides & Articles

article1_image

In our comprehensive guide, we look at what o-rings and seals are, what they’re used for, as well as the different types that are available.

article1_image

The only guide you will ever need to understand what gasket paper is, how it's used and what's currently available.

Related Products
These miniature couplings are highly flexible and have ...
Description:
These miniature couplings are highly flexible and have excellent torsional rigidity. Two Joints with an Interconnecting Shaft. Allows for Greater Misalignment-40°C to +120°C Temperature Range.
Ruland JD32/51-92Y is a zero-backlash jaw coupling spider ...
Description:
Ruland JD32/51-92Y is a zero-backlash jaw coupling spider designed to fit Ruland hubs that have an OD of 2.000" (50.8mm). It is a component in a three-piece design consisting of two aluminum hubs and an elastomeric insert called the spider ...
The Ruland jaw coupling spider design has 57.2mm ...
Description:
The Ruland jaw coupling spider design has 57.2mm OD to fit the Ruland hub. It is made from polyurethane 98 Shore, a hardness allowing the highest torque capacity with limited compliance. This design allows for a highly customizable coupling that ...
The industry standard general duty jaw coupling. Generally ...
Description:
The industry standard general duty jaw coupling. Generally used for connecting a wide range of equipment including pumps, compressors, gear reducers, line shafts, conveyors and most types of rotating machinery. Quick, simple to install. Hubs in sintered iron as standard. ...