Flexible Couplings Specifications

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Coupling Type


	Coupling Type:
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	Coil Spring		Coiled springs are used to couple shafts. This coupling type is used in instrument and low horsepower applications.
	Double Loop Coupling		Double loop couplings consist of a solid elastomeric element with two U-shaped webs that connect the shaft attachment hubs. This coupling type permits a relatively high degree of axial misalignment.
	Elastomeric "Tire" Shape		Shaft hubs are attached to either side of an elastomeric "tire." This coupling type accommodates angular and parallel misalignment, as well as end-float.
	Flexible Link		Three cantilevered beams or links are arranged in a triangle and attached to hubs and torque sleeves. Flexible links handle angular, parallel, and axial misalignment.
	Gear / Multi-Jaw		Gears with external teeth are mounted on shafts. A sleeve with internal teeth fits over the gears. This widely used coupling style provides high torque and allows axial misalignment, but usually needs lubrication and good shaft alignment.
	Helical / Slit		Helical or slit couplings prevent backlash and provide constant velocity with angular misalignment. They are designed for high speeds and do not require lubrication. Helical and slit couplings are flexible beams machined from a solid piece of material with a bore through the center. Slit couplings have several slits, machined on the periphery of the coupling that allows the beam to flex. A helical coupling is a type of a slit coupling that has a continuous, helical slot machined through the bore in the center section. Both coupling types have no backlash and constant velocity with angular misalignment. They can operate at high speeds with no lubrication.
	Magnetic Disc		Magnetic disc couplings feature two opposing, face-to-face disc halves, each with a series of magnets. The torque is transmitted across an air gap from one disc face to the other.
	Metal Bellows		Metal bellows couplings are designed for high speeds and light-duty applications. They prevent backlash and do not provide cyclic speed variation.
	Metal Contoured Diaphragm		Torque is transferred through contoured, metallic diaphragms. This coupling type provides high horsepower and revolutions per minute (RPM).
	Roller / Silent Chain		Sprockets on each shaft are coupled by a chain or chains. This coupling style is suitable for heavy duty, high torque applications.
	Schmidt Coupling		Torque is transmitted through a series of plates connected by links. Schmidt couplings permit large lateral misalignment.
	Shear Coupling		Shear couplings contain metal inserts for shaft attachment inside an elastomeric coupling, which will shear or tear in overtorque or machine jam conditions to prevent motor or machine damage.
	Sliding Block / Oldham		Slotted or jawed flanges on shafts transmit torque through a captured sliding disk or block.
	Steel Grid		Slotted flanges on each shaft are coupled by a flexible steel band that is laced through the slots. This coupling type provides good shock absorption.
	Spider Coupling		Spider couplings use an elastomeric ring with multiple radial arms in between a rigid component on each side: drive and driven. The elastic component allows for some axial and radial misalignment. Spider couplings can assist in absorbing shock loads due to high acceleration, deceleration, or change of direction.
	Torsionally Flexible Coupling		Torsionally-flexible couplings incorporate an elastomer member and have the ability to dampen vibration, absorb shock, and twist without causing damage. Torsion forces are applied when one end of the device moves in one direction, while the other end either remains fixed or moves in the opposite direction.
	Wafer / Flexible Disc		Torque is applied through sheet metal plates mounted to shafts and intermediate plates by two-point supports. This coupling type is suitable for light to moderate duty applications.
	Other		Other unlisted, specialized, or proprietary coupling types.
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Coupling Dimensions


	Bore Diameter		Bore diameter is the internal diameter for mating to the motor or shaft-end.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Coupling Diameter		The outside diameter of the coupling; includes the housing and other dimensional considerations.
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	Coupling Length		The overall length of the coupling.
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Alignment & Motion


	Angular Misalignment		The maximum angular misalignment between coupled shafts that the coupling can accommodate.
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	Axial Misalignment		Relative axial motion allowed by the coupler between shafts.
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	Parallel Misalignment		The maximum parallel offset between shafts that the coupling can accommodate.
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Performance Specifications


	Rated Torque		Maximum service torque for which the coupling is rated.
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	Rated Speed		Maximum rated rotational speed of coupling.
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	Torsional Stiffness		Torsional stiffness is expressed in torque per unit angular deformation (e.g. the required torque to deform coupling one degree).
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	Backlash		Backlash is the rotational position loss due to a direction change. It is measured in angular units such as degrees.
	Search Logic:		All matching products will have a value less than or equal to the specified value.

Flexible Couplings Specifications

Coupling Type:

Bore Diameter:

Coupling Diameter:

Coupling Length:

Angular Misalignment:

Axial Misalignment:

Parallel Misalignment:

Rated Torque:

Rated Speed:

Torsional Stiffness:

Backlash:

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