Flexible Mechanical Friction Torque Limiter Coupling

Overload Protection Between Two Supported Shafts With Slight Angular and/or Parallel Misalignment

  • Continuously engaged friction torque limiter slips when the torque setting is exceeded. Continues to slip until the overload ceases.
  • Each side of the assembly, (1) the torque limiter mechanism and the (2) coupling, is attached to a fully supported shaft creating a connection for the transfer of rotary motion from one shaft to the other.
  • Momentary overload protection.
  • Torque limiters are not recommended in continuous slip or tension control applications. Consider a SensiFlex® tension control clutch or brake.
  • Maximum RPM varies by model. Please consult the detail sheets (below). Consult engineering if the intended application exceeds the listed maximum RPM.
Design Features
  • No reset required after torque limiter slips.
  • The slip torque setting can be adjusted.
  • Elastomeric element compensates for up to 3 degrees of angular misalignment and up to 0.040 parallel offset between shafts.
  • Each side of the assembly is bored and keyed to fit any shaft size up to the maximum shown (US and Metric).
Flexible Mechanical Torque Limiter Couplings
Torque Limiter Coupling
Repair Kits and Parts

View model-specific detail sheets below
for available kits and product codes

Download Product ManualPrint Page


Visit Our Torque Limiter
Application and Use Guide
For Video and Diagrams Showing
How This Product Works

Product No. Maximum
Torque Setting
Maximum Bore with Standard Keyway
(Inches / Millimeters)
Length (Inches) Outside Diameter (Inches) Minimum Shaft Insertion, Mechanism & coupling (Inches) Detail Sheet Request 3D CAD Model
T3H2H-STL 792 0.875 / 21 6.27 4.00 1.75 View PDF request
T4H2H-STL 1,406 1.25 / 31 7.44 5.13 2.06 View PDF request
T5H2H-STL 2,736 1.375 / 38 7.70 5.69 2.06 View PDF request
T6H1G-STL 3,070 2.000 / 52 9.91 7.34 2.37 View PDF request
T6H2G-STL 6,140 2.000 / 52 10.62 7.34 2.37 View PDF request

Additional Information

Mach III friction torque limiters do not disengage upon overload. A means of sensing and stopping the overload condition must be in place or a friction torque limiter will continue to slip, eventually overheating to the point where it is unfit for continued use. See our Torque Limiter Application and Use Guide for more details.

Customization Options

Mach III provides customized torque limiters for applications with unique requirements. Contact our engineering department with your specifications.

3D Model Request


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