A coupling is a device used to connect two shafts at their ends for the purpose of transmitting power. The primary purpose of a coupling is to join two pieces of rotating equipment while permitting some degree of misalignment, end movement, or both. Couplings do not normally allow disconnection of shafts during operation, but specialty torque-limiting couplings can slip or disconnect by design if/when the determined torque limit is exceeded. with careful selection, installation and maintenance of couplings, substantially reduced maintenance costs and downtime can be achieved.

Coupling Suppliers

  • Miki Pulley is a world-class provider of shaft couplings engineered for superior performance. They test all couplings for quality, durability, and longevity and offer customization for specialty applications.
  • Rainbow Precision Products are factory distributors of couplings from top manufacturers. From jaw couplings and flex couplings to roller chain shaft couplings and sleeve couplings, they have solutions for any application.
  • Tri-Tec Manufacturing produces flux drive magnetic couplings in compliance with DOD standards. The company supplies couplings to the US Navy and other customers with exceptionally high quality standards.
  • Zero-Max, Inc. has created innovative solutions to servo motion control problems for over 60 years, including shaft couplings, adjustable speed drives, and keyless lock bushings.


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