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Flexible Couplings Specifications

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Coupling Type




   Coupling Type:       
   Your choices are...
 
      
 
   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 allow the beam to flex.  A helical coupling is a type of a slit coupling and has a continuous, helical slot in the center section, machined through to the bore.  Both coupling types have no backlash and constant velocity with angular misalignment. They can operate at high speeds with no lubrication.
 
   Magnetic
 
     Permanent magnets are mounted on shafts separated by a nonmagnetic barrier. Magnetic coupling provide torque ratings to 500 ft.-lb. and can eliminate the need for seals.
 
   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 that will shear or tear in over-torque 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.
 
   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.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Coupling Dimensions




   Design Units:       
   Your choices are...
 
      
 
   English
 
     The primary dimensions are designed in English units such as inches or fractions of an inch.
 
   Metric
 
     The primary dimensions are designed in metric units such as millimeters or centimeters.
 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   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, etc.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
   Coupling Length
 
     The overall length of the coupling.
 
   Search Logic:      All matching products will have a value less than or equal to the specified value.
Alignment & Motion




   Angular Misalignment
 
     Maximum angular misalignment between coupled shafts that the coupling can accommodate.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Axial Misalignment
 
     Relative axial motion allowed by the coupler between shafts.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   Parallel Misalignment
 
     Maximum parallel offset between shafts that the coupling can accommodate.
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
Performance Specifications




   Rated Torque
 
     Maximum service torque for which the coupling is rated.
 
   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.
   Rated Speed
 
     Maximum rated rotational speed of coupling.
 
   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.
   Torsional Stiffness
 
     Torsional stiffness is expressed in torque per unit angular deformation (e.g. the required torque to deform coupling one degree, etc.).
 
   Search Logic:      All matching products will have a value greater than or equal to the specified value.
   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.
Environment




   Operating Temperature
 
     This is the full-rated range of operating temperature.
 
   Search Logic:      User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
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