D8F3K-STH Spring Engaged Friction Brake Flange Mount Engagement/Disengagement Spring/Air Facing Type High Coefficient Torque - Dynamic 4,326 Pound Inches Minimum Disengagement Pressure 57 PSI Maximum Operating Pressure 80 PSI Maximum RPM 1,650 Bore Range with Standard Keyway 1.250 (32) to 2.375 (66) Inches (mm) Air Volume New 1.05 Cubic Inches Air Volume Worn 2.10 Cubic Inches Finish Aluminum Open or Enclosed Construction Open Mounting Bolt Circle 10.875 Inches Shipping Weight 72 Pounds TORQUE vs. AIR PRESSURE NEW vs. BURNISHED TORQUE The torque output of a new friction brake or clutch can be up to 40% less than the published torque rating. To achieve full design torque, a unit must be cycled under load to burnish the friction surfaces. The exact number of cycles varies by application. When calculating required torque always use a safety factor of 1.5 to 2. It is not recommended to select a product for use at its maximum rated torque for continuous duty. PRODUCT SELECTION Torque capacity is only one factor to consider when making a product selection. Ensure that you will have the right product for the job by contacting our engineering department for application review and selection assistance. 101 Cummings Drive Walton, KY 41094 USA 859-291-0849 machiii.com [email protected]

PARTS KITS The Repair Kit contains common wear items for this product. Users are encouraged to stock one or more repair kits considering the number of units installed and the potential downtime if machinery on which the unit is installed is critical equipment. To obtain current pricing and lead time for parts kits, contact customer service. ADDITIONAL PRODUCT INFORMATION For illustrated guides showing how Mach III products work, selection guidelines, product manuals, and installation and use recommendations: https://machiii.com/resources/how-our-products-work For information about how to order,...