Power Transmission Couplings, API Couplings | John Crane Products


Stainless Steel Discs in Factory-assembled Cartridge for Medium-duty Applications

John Crane’s Metastream® T Series metallic membrane couplings, incorporate scalloped, stainless-steel, flexible membranes.  This design gives the most flexible solution for high-torque and misalignment conditions.  The range of TSK/TSC has been specifically designed to meet the exacting standards of API 610 (ISO 13709) and ISO 14691.  With an excellent power to weight ratio and fit-and-forget reliability, the TSK/TSC coupling is ideally suited to meet the pumping, motor, and turbine drive power transmission in oil and gas, petrochemical, power generation, and other critical process industries.


  • California Residents: PROPOSITION 65 WARNING
  • Easy to fit
  • Intrinsic balance meets AGMA class 9
  • Ideally suited to pump applications
  • High misalignment capability.
  • Low imposed forces on machinery, leading to reduced machinery vibration and maximized bearing life.
  • Stainless steel flexible membranes for maximum life.
  • Cartridge transmission unit eases assembly and gives repeatable balance.
  • Overload collars are fitted to protect the flexible membrane in case of severe torsional overload.
  • Anti-fly retention of the spacer in the unlikely event of membrane failure.
  • Puller holes incorporated into hubs as standard.
  • Self-locking feature for security allows the bolts to be used repeatedly without compromising their integrity.
  • Compression and jacking bolt features for easy installation and removal of spacer assembly as standard.



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