Spring Engaged Clutch - Regular Duty

End of Shaft Bored, Pilot Mount Friction Clutches

  • Industrial friction clutch is engaged with spring pressure
  • A fixed amount of torque is transmitted
  • To release clutch, air pressure is applied to overcome the spring pressure
  • End of Shaft
  • Spring Engaged friction clutch slides on shaft and is fixed with set screws and a customer supplied key
  • No anti-rotation arm required
  • Friction clutches are designed for horizontal mounting. If vertical mounting is required, consult engineering for options
  • Spring engaged friction clutches are suitable for applications requiring the clutch to remain engaged in the absence of air pressure or during a loss of power
  • Not suitable for cycling applications
  • Maximum RPM varies by model. Please consult the detail sheets (below). Consult engineering if the intended application exceeds the listed maximum RPM.
Design Features
  • Industrial friction clutches are bored to suit up to the maximum shown for easy installation
  • Machined pilot for easy mounting of pulley or sprocket
  • Includes rotary air seal
Regular Duty Spring Set Friction Clutches
Friction Clutch Repair Kits & Parts
Click here or view PDF detail sheets
below for more information.

Download Product ManualPrint Page

Product No. Friction Lining Coefficient Torque (Lb-In) Release Pressure (PSI) Maximum Bore with Standard Keyway
(Inches / Millimeters)
Length (Inches) Outside Diameter (Inches) Detail Sheet Request 3D CAD Model
E3D3R-STH High 506 77 1.000 / 24 6.13 4.00 View PDF request
E4D3R-STH High 1,137 75 1.250 / 31 6.81 5.00 View PDF request
E5D3R-STH High 2,424 78 1.440 / 38 7.63 6.28 View PDF request
E6D3G-STH High 5,318 76 2.000 / 52 9.09 8.25 View PDF request

Additional Information
Mach III industrial friction clutch units are solidly constructed and feature hang-up resistant drives to provide reliable power transmission. The clutch pilot is machined for easy mounting of a sprocket or pulley in the field, or, Mach III can provide the sprocket or pulley pre-mounted on the industrial friction clutch when it ships from our factory. Friction clutch 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 an industrial friction clutch for use in a new or retrofit application.

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