Mechanical Friction Torque Limiter Mechanisms with Couplings

Continuously Engaged, Momentary Overload Protection

  • Mechanically adjustable, continuously engaged friction torque limiter slips in the event of an overload
  • Torque at which limiter will slip is field adjustable through the tightening or loosening of a nut
  • Adjustment nut is locked in place by set screws when desired torque setting is established
  • Set screws and customer supplied key connect the torque limiter mechanism to one shaft and the coupling hub to a second fully supported shaft
  • Shafts must be accurately aligned to prevent premature failure of the torque limiter
  • Note: Torque Limiter Mechanism DOES NOT support Coupling
  • Momentary overload protection
  • Torque limiters are not recommended in continuous slip or tension control applications. A SensiFlex® clutch or brake should be used instead.
  • 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
  • Both torque limiter mechanism and coupling bored to suit up to the maximum shown (US & Metric) to accept differing shaft sizes
Torque Limiter Mechanisms with Couplings
Torque Limiter Repair Kits & Parts
Click here or view PDF detail sheets
below for more information.

Download Product ManualPrint Page

Product No. Maximum
Torque Setting
Maximum Bore with Standard Keyway
(Inches / Millimeters)
Length (Inches) Outside Diameter (Inches) Detail Sheet Request 3D CAD Model
V2G2R-STL 200 0.500 / 12 2.41 2.58 View PDF request
V3G2H-STL 792 1.000 / 24 4.06 3.50 View PDF request
V4G2H-STL 1,406 1.250 / 31 5.08 4.48 View PDF request
V5G2H-STL 2,736 1.438 / 38 6.09 5.69 View PDF request
V6G1G-STL 3,070 2.000 / 52 8.16 7.34 View PDF request
V6G2G-STL 6,140 2.000 / 52 8.87 7.34 View PDF request
V8G1K-STL 6,066 2.500 / 66 10.19 10.00 View PDF request
V8G2K-STL 12,132 2.500 / 66 11.09 10.00 View PDF request

Additional Information

Mach III torque limiter mechanisms with couplings are solidly constructed to provide reliable power transmission. Torque limiter models can be adapted to accommodate customer needs. See our Custom Design Solutions page for more information. Mach III encourages contact with our engineering department before purchasing a torque limiter mechanism with coupling for use in a new or retrofit application.

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