Air Applied Flexible Clutch Couplings - Regular Duty

Couple Two Shafts with Slight Angular Misalignment and/or Parallel Offset

  • Friction clutch coupling engages with air pressure, spring released when air is exhausted
  • Torque is linear in response to air pressure applied
  • Set screws and customer supplied key connect the clutch mechanism to one shaft and the coupling hub to a second, fully supported shaft
  • Anti-rotation arm required to prevent rotation of the air housing
  • Clutch couplings are designed for horizontal mounting. If vertical mounting is required, consult engineering for options
  • Note: Clutch coupling mechanism DOES NOT support flexible coupling half
  • Flexible clutch couplings connect/disconnect two fully supported shafts
  • Maximum RPM varies by model. Please consult the detail sheets (below). Consult engineering if the intended application exceeds the listed maximum RPM.
Design Features
  • Elastomeric element compensates for up to 3 degrees of angular misalignment and up to 0.040 parallel offset between shafts
  • Both clutch mechanism and coupling bored to suit up to the maximum shown (US & Metric) to accept differing shaft sizes
  • Available with either high or low* coefficient friction linings for same price
Flexible Clutch Couplings Regular Duty
Clutch Coupling Repair Kits & Parts
Click here or view PDF detail sheets
below for more information.

Download Product ManualPrint Page

Product No. Friction Lining Coefficent Torque @ 80 PSI (Lb-In) Maximum Bore with Standard Keyway
(Inches / Millimeters)
Length (Inches) Outside Diameter (Inches) Detail Sheet Request 3D CAD Model
C2H2R-STH High 190 0.500 / 12 4.66 2.58 View PDF request
C3H2R-STH High 555 1.000 / 24 7.16 4.00 View PDF request
C3H2R-STL Low* 370 1.000 / 24 7.16 4.00 View PDF request
C4H2R-STH High 1317 1.250 / 31 9.30 5.13 View PDF request
C4H2R-STL Low* 878 1.250 / 31 9.30 5.13 View PDF request
C5H2R-STH High 2587 1.438 / 38 9.70 5.69 View PDF request
C5H2R-STL Low* 1725 1.438 / 38 9.70 5.69 View PDF request
C6H2G-STH High 5397 2.000 / 52 12.14 7.63 View PDF request
C6H2G-STL Low* 3598 2.000 / 52 12.14 7.63 View PDF request

*Low coefficient lining models are offered for applications where a small amount of slip is required or a narrower torque range is necessary. For continuous slip or tension control applications, a SensiFlex® clutch should be used.

Additional Information

Mach III flexible clutch couplings are solidly constructed to provide reliable power transmission. Flexible clutch coupling 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 flexible clutch coupling for use in a new or retrofit application.

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