friction clutches - Arten Freios e Embreagens Industriais

Table of Contents◗CLUTCHES“Air Champ” ®HEAVY DUTY CLUTCH & BRAKEELEMENTSDFE & QFE MODEL SERIESThis 16 Model Series ofair-actuated Dual Faced andQuad Faced Elements aredesigned for heavy duty industrialapplications requiring high torqueand low inertia:◗ Static Torque ratings up to302,000 In. Lbs. @ 80 psi (seechart page 60)◗ Maximum Operating Speed up to1600 rpm◗ Thermal Horsepower values upto 14.7 @ 1600 rpm◗ Bore range up to 6.500 inches◗ Thru-Shaft or Shaft-End MountBrake◗ Horizontal Shaft-End mountedClutch Element mounts to acustomer supplied flywheel, gearor pulley◗ Dual Faced Elements have singledisc assemblies, Quad FacedElements have double discassemblies◗ Available with either Standard orHigh coefficient friction linings◗ Single or Double DiscAssemblies available in 4 discsizes◗ Rugged design ensures longproduct life◗ Sealed O-ring piston & cylinderdesign reduces maintenancecosts◗ Air Union Bracket Assemblyincludes flexible hose.With this Heavy Duty Model Series, tough applications are made easy. Each of the16 Models are detailed on the next few pages.◗ PEAK INPUT RATEThe DFE and QFE Series of Clutches and Brakes are designed for applicationsrequiring high torque and low inertia. The peak input rate may be the limiting factorin high inertia starts or stops, even though the Heat Sink Capacity is efficient.The peak input rate capacity is the rate at which the clutch absorbs heat at thefriction interface during the acceleration period while interfaces are slipping, or untilthe load and the clutch are operating at the same speed. See page 368 theEngineering Data Section for information explaining how to calculate the Peak InputRate and how to avoid potential problems.◗ HEAT SINK CAPACITIES & PEAK INPUT RATEHeat Sink Peak Input EffectiveModel Capacity (Ft Lbs) Rate (HP) Interface AreasDFE 1150-S/H 390,000 105 117 in 2DFE 1650-S/H 870,000 204 227 in 2DFE 2200-S/H 1,187,000 297 330 in 2DFE 2500-S/H 1,460,000 363 404 in 2QFE 1150-S/H 780,000 210 234 in 2QFE 1650-S/H 1,740,000 408 454 in 2QFE 2200-S/H 2,374,000 594 660 in 2QFE 2500-S/H 2,920,000 727 808 in 2◗ CONTINUOUS RATED THERMAL HORSEPOWER DISSIPATION VS. RPMThermal Horsepower12108642Dual Faced Elements0 200 400 600 800 1000 1200RPMDFE 2500DFE 2200DFE 1650DFE 1150Thermal Horsepower161412108642Quad Faced Elements0 200 400 600 800 1000 1200RPMQFE 2500QFE 2200QFE 1650QFE 1150Manufactured in the U.S.A. under licenseof Coremo Ocemea - Italy56