Spring Applied Clutch - Heavy Duty

Through Shaft Bored, Pilot Mount Friction Clutches

  • Heavy duty friction clutch is applied with spring pressure
  • A fixed amount of torque is transmitted
  • To release clutch, air pressure is applied to overcome the spring pressure
  • Through Shaft/Mid Shaft or End of Shaft
  • Spring applied friction clutch slides on shaft and is fixed with set screws and a customer supplied key
  • Anti-rotation arm required
  • Clutch is designed for horizontal mounting. If vertical mounting is required, consult engineering for options.
  • Heavy duty spring applied 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
  • Made to order, bored to fit the shaft size you specify up to the maximum shown for easy installation
  • Splined drive and toothed friction discs for heavy duty service
  • Machined pilot for easy mounting of pulley or sprocket
  • High torque in compact unit
Heavy Duty Spring Set Friction Clutches
Heavy Duty Clutch Repair Kits & Parts
Click Here or View PDF detail sheets
below for 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
E5A2K-STH High 3,133 75 1.56 / 40 6.57 7.53 View PDF request
E6A2K-STH High 4,723 78 2.000 / 52 7.38 8.25 View PDF request
E8A2K-STH High 8,324 77 2.50 / 66 9.00 10.25 View PDF request
EAA2K-STH High 13,182 76 2.75 / 72 10.00 12.63 View PDF request
EBA2K-STH High 23,733 77 3.50 / 95 10.73 14.97 View PDF request

Additional Information
Mach III spring applied 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 clutch when it ships from our factory. Spring applied 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 spring applied clutch for use in a new or retrofit application.

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