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Drive Couplings

SureMotion® Drive Couplings


SureMotion Drive Couplings and Bore Reducers


  • Jaw / Spider Couplings

  • Double Loop Couplings

  • Oldham Couplings

  • Beam-Style Servo Couplings

  • Bore Reducers

Rotating shaft-driven mechanical components are commonly used in all forms of machinery that perform the various processes and functions of modern industry.
  • Shaft misalignment will place stresses on shafts and related parts of the assembly such as bearings, which can result in early failure of both.

  • Shaft ends can be misaligned radially or angularly, exhibit axial displacement, or experience a combination of all three.

  • Drive couplings can be used to compensate for shaft misalignment, whether the misalignment is an intentional or an unintentional part of the design.


Jaw CouplingsJaw Couplings
Most commonly specified coupling type - cost effective.
  • Aluminum hubs available with different bore diameters in same coupling
  • Polyurethane center "spiders" available in different durometers for different degrees of shock and vibration reduction
  • A complete jaw/spider coupling assembly consists of two hubs and one spider, each of the same "size" and each purchased separately
  • The two same size hubs can be of different "bore" diameters, if needed for the application.
  • Fail-safe operation
  • Electrical isolation
  • Wide torque range
  • High axial misalignment range
  • Wide operating temperature range: -40 to 100 C (-40 to 212 F)
  • Not recommended for applications where inertia is a factor
Double Loop CouplingsDouble Loop Couplings
Outstanding resistance to acids, alkalis, solvents, oils, grease, ozone.
  • High torsional rigidity
  • One-piece design
  • Hubs made of series 300 stainless steel
  • Double loop made of DuPont Hytrel
  • Corrosion protection
  • Wide operating temperature range: -40 to 100 C (-40 to 212 F)
  • Electrical isolation
  • Damping of shock and vibration
  • Speeds up to 3,000 RPM
  • Not recommended for applications where inertia is a factor
Oldham CouplingsOldham Couplings
Mechanical "fuse" prevents damage to other components in over-torque conditions.
  • Large radial misalignment capability
  • Hubs made of aluminum 2011 T8
  • Center discs made of Delrin
  • Zero backlash
  • Corrosion-resistant
  • Non-magnetic
  • Operating temperature range: -20 to 60 C (-4 to 140 F)
  • Electrical isolation
  • Absorbs shock and isolates vibration
  • Dampens resonance
  • Speeds up to 3,000 RPM
  • Low inertia
Servo CouplingsServo Couplings
Flexibility of bellows coupling plus torsional stiffness and strength of disc coupling.
  • Stainless steel set-screw couplings
  • Hubs made of 416 stainless steel
  • Flex beams made of 420 stainless steel
  • Zero backlash
  • Corrosion-resistant
  • Bore reducers available to fit a wide variety of bore combinations
  • Very wide operating temperature range:
    for 24/7 applications: -73 to 191 C (-100 to 375 F)
    for intermittent applications (<8hr): -73 to 232 C (-100 to 450 F)
  • Speeds up to 10,000 RPM
  • Torque up to 300 lb-in
Bore ReducersBore Reducers
For use in all SureMotion drive coupling hubs to reduce bore size.
  • Split-collar design with 2 set screw flats will not mark shaft
  • 25% greater holding power than standard split collar
  • Hardened stainless steel
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