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Multiple Disc Pulley Clutch (EPC)

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Carlyle Johnson's electric multiple disc pulley clutch units - also known as sheave clutches - incorporate a standard electromagnetic multiple disc design with an oil shear principle to enhance service life.

Oil is squeezed from between the friction discs as the pulley clutch is engaged, and the shearing oil transmits the engagement torque. This process significantly reduces heat along the surface of the friction disc. The heated oil is then forced to the outside of the housing for greater heat dissipation.

EPC pulley clutches are often mounted on devices where the unit needs to be routinely disengaged from the main power source.

CJM is able to modify our standard electromagnetic clutch pulley models to meet your specific needs - rely on our experience to modify our existing production line or to build a custom multiple disc pulley clutch solution.

Specifications / Dimensions

Model refers to clutch number. Sheave / pulley clutches are available in several sizes with standard operating voltages from 6 to 240 VDC. The most typical applications are PTO clutch assemblies that operate at 12 VDC. The motion control experts at Carlyle Johnson are always available to help recommend the correct model, or even custom design units for special applications.
Dimensions / Ratings
Model A B C Bore* D E F Keyway
EPC - 0475 6.125 1.29 1 1/4 or 1 3/8 6 4.55 3.5 1/4 x 1/8
EPC - 0625 6.75 1.29 1 1/4 or 1 3/8 7.5 5.48 4.25 1/4 x 1/8
*Available in other sizes. Model refers to clutch number.
** Heat sinks are required for applications operating at speeds greater than 1800rpm and/or high cycle rates.
Operating Characteristics
Model Dyn. Torque(lb. ft.) Static Volts DC* Current Amps Power Watts Speed**
EPC - 0475 75 150 12 or 24 4.2 / 2.1 50 1800
EPC - 0625 150 300 12 or 24 4.2 / 2.1 50 1800
Sheave No. O.D. Bore P.D. Belt Type Keyway
PSA - 0600 6.15 3.751 / 3.753 6 "B" 1/2 x 1/4
PSA - 0700 7.15 3.751 / 3.753 7 "B" 1/2 x 1/4
PSA - 0800 8.15 3.51 / 3.753 8 "B" 1/2 x 1/4

In addition to our standard Multiple Disc Pulley Clutch (EPC), our engineering department can custom design and manufacture a new component to meet your specific requirements. If you have further questions or would like to discuss your specific needs, please contact us.

Images & Drawings

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Features of EPC Pulley Clutch Units

The EPC multiple disc pulley clutch is suitable for harsh applications, providing long life span due to its unique oil shear multiple disc design, with life expectancies greater than ten times that of single plate, dry clutches.

When fully sealed, this pulley clutch operates in a bath of type A automatic transmission fluid, which helps to protect the component from damage from environmental conditions and wash-downs.

Designed to mount in minutes, EPC pulley clutches are proven dependable, largely due to a design that incorporates long-wearing self-adjusting multiple disc units, creating a pulley clutch that "really works" under tough conditions.

Advantages

  • Suitable for harsh environments
  • Full-enclosed durable housing for easy outside wash down
  • Long-lasting lift expectancy greater than 10X single-plate, dry clutches
  • Easy Installations
  • Dependable disc design excels in demanding conditions

Operation

  • Torque Range 15 lb. ft. - 300 lb. ft.
  • Std. operating voltages 6 to 240 VDC
  • Self-adjusting multiple disc units
  • Mounts to a motor, pump or jack

Customization

  • Standard pulleys available
  • Several exterior finishes available
  • Custom designs and alterations available

Typical Applications

  • Gasoline engines
  • Pumps
  • Generators
  • Conveyors
  • Gear boxes

Contact Our Multiple Disc Pulley Clutch Experts

If you have questions about a standard or custom electromagnetic clutch pulley, our team is here to help. Simply fill out the form on this page or reach out to a member of our team, and we will be in touch shortly. We look forward to speaking with you about your multiple disc pulley clutch requirements.

Downloads

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EPC Clutch Specification Sheet
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Upload a CAD for a custom electric clutch design.

Further downloads including certificates, instruction manuals and product images are available to you in our Download Center:

Downloads