Curved Jaw Shaft Coupling  by Guardian

Guardian Coupling is a maintenance free, axial plug-in, easy assembly curved jaw coupling. It also compensates for axial, radial and angular shaft misalignments. Guardian has provided unmatched reliability and efficiency in the most demanding applications.

  • Vast selection of hub materials: Aluminum, Sintered Steel, Plain Steel, Stainless Steel
  • Urethane and Hytrel spiders
  • Maintenance free and fail safe design
  • Two hub designs, (regular,large) to fit your requirements


  • Standard Style Couplings - Aluminum hubs available up to size 48/60; Sintered Steel hubs available from size 19/24 to 28/38; Plain Steel hubs available from size 38/45 to 90/100, and Stainless Steel hubs available from size 24/32 to 48/60. Standard set screw furnished unless otherwise requested.
  • Clamping Hub Style Couplings - Machined steel hubs; Statically balanced hubs; Axial plug-in, fail safe design. SAE Spline with cross clamp
  • Stainless Steel Style Couplings - Corrosion resistant; Ideal for Food Processing Machinery, Printing and Paper Equipment, Textile Machinery, Water Treatment Plants, Power Washing Equipment, Pharmaceutical Plants, Offshore Equipment and Military Applications


Hub Types:

  • Straight Shaft Hubs
  • Splined Shaft Hubs with Cross-Clamp
  • Tapered Shaft Hubs

Hub Materials and Sizes:

  • Materials: Aluminum, Plain Steel & Stainless Steel (Note: Not all sizes are available in all material options)
  • Two hub designs to fit your requirements: Regular (low mass), Large (larger bores)

Insert Material Options:

  • 80Sh-A Blue, Polyurethane - Excellent damping
  • 92Sh-A White, Polyurethane - Moderate damping, general applications
  • 98Sh-A Red, Polyurethane - High torque applications
  • 64Sh-D Green, Hytrel - Higher torque, high temperature