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Shaft Couplings

Do you need to join two shafts together? Do you need to connect your motor to a drive shaft? How about an engine to a pump? Sounds like you’re in the market for a shaft coupling. We have many different types of couplings for almost any application imaginable.

Rigid Shaft Couplings

Chain Shaft Couplings

rigid

A rigid coupling is a unit of hardware used to join two shafts within a motor or mechanical system. It may be used to connect two separate systems, such as a motor and a generator, or to repair a connection within a single system. A rigid coupling may also be added between shafts to reduce shock and wear at the point where the shafts meet.
chain
Chain Couplings transmit torque through two hubs with hardened sprocket teeth and a double width roller chain.

Jaw Shaft Couplings

Gear Shaft Couplings

jaw

A jaw coupling is a type of motion control (servo) coupling designed to transmit torque (by connecting two shafts) while damping system vibrations, which protects other components from damage. Jaw couplings are composed of three parts: two metallic hubs and an elastomer insert called an element, but commonly referred to as a “spider”.
gear
A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear. It consists of a flexible joint fixed to each shaft. The two joints are connected by a third shaft, called the spindle.
Each joint consists of a 1:1 gear ratio internal/external gear pair. The tooth flanks and outer diameter of the external gear are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equivalent to rotating splines with modified profiles. They are called gears because of the relatively large size of the teeth.

Grid Shaft Couplings

Disc Shaft Couplings

grid
A grid coupling connects a gear drive to a belt pulley, which is mainly used on low-speed shafts
disc
Disc couplings are torsionally rigid, have low inertia, and operate with zero-backlash making them ideal for precise positioning systems in industries such as test and measurement, semiconductor, solar, and printing.

Universal Shaft Couplings

universal
Gear couplings and universal joints are used in similar applications. Gear couplings have higher torque densities than universal joints designed to fit a given space while universal joints induce lower vibrations. The limit on torque density in universal joints is due to the limited cross sections of the cross and yoke. The gear teeth in a gear coupling have high backlash to allow for angular misalignment. The excess backlash can contribute to vibration.