Electric Brakes and Clutches ATT Series – Advanced Technology Brakes and Clutches Advanced Technology – A new design concept! Warner Electric’s ATT Series clutches and brakes are rugged and durable. Besides providing the ultimate in long life and durability, the ATT units are easily repairable... and, for the first time, mounting a standard sheave, pulley or sprocket to the clutch is a snap. AT Clutches and Brakes are completely assembled at the factory and have been specifically designed to match the torque ratings of standard motors, reducers, and other power transmission components. Easy to select and easy to install. Features: ATT Tension Clutches and Brakes Ideal for intermediate range applications Both brake and clutch models for winders and unwinders .284 to .9 thermal horsepower capacity Brake wear faces replaceable on the shaft for limited downtime Full range of control options. See pages 40-41. Unit Size Continuous Operation Overcurrent E-Stop Torque Notes 1. Dynamic torque is constant over a speed range of 0–600 RPM 2. Overcurrent is not used on clutch applications for tensioning Selection RPM ATT Clutch ATT Brake Heat Input (x1000 lb.ft./min.) Consult Factory

Electric Brakes and Clutches ATT Series – Advanced Technology Brakes and Clutches Special Coil Designs High temperature coil wire improves durability in the face of high temperature environments and high cycle rates or high inertia cycling that generate large amounts of heat. High temperature Teflon leads are very resistant to accidental abrasion and cutting. Complete Control Capability Optional Accessories Warner Electric offers a number of optional accessories as well as rebuild kits, which may make an ATT clutch or brake easier to apply to your machine. See pages 40-41 for controls. Replaceable...

Electric Brakes and Clutches ATT Series – Advanced Technology Brakes and Clutches ATTB Brake Two piece friction disc replaceable without disassembly of unit in most applications. Long life, low noise. Rugged, two-piece replaceable steel wear surface and precision cast iron components. Superior wear life, torque capacity and magnetic characteristics. Rugged spline drive for maximum durability. Sealed, high-temperature coil with tough Teflon lead wires for easy power connections. UL recognized. Flange mounted. Specifications Mechanical Data Electrical Data Resistance (ohms) Power (watts)

Electric Brakes and Clutches ATT Series – Advanced Technology Brakes and Clutches F Wire Protector included with Brake Customer shall maintain: 1. Squareness of brake mounting face with armature hub shaft within .006 T.I.R. 2. Concentricity of brake mounting pilot diameter with armature hub shaft within .010 T.I.R. Shaft Bore and Keyway Dimensions Model Unit Bore Key ATTB-55 Model Unit Bore Key ATTB-25 For replacement parts list and exploded view drawing, see page 160.

Electric Brakes and Clutches ATT Series - Advanced Technology Brakes and Clutches Rugged spline drive Easy sheave mounting. Optional sheaves and pulleys available from Warner Electric. Many other industry-standard sheaves and pulleys adaptable through simple boring and key seating Sealed, high-temperature coil with tough Teflon lead wires for easy power Sealed heavy-duty bearings with high- temperature lubricant maintain tight running efficiency Long life, quiet operations. Friction disc replaceable without disassembly of unit in most applications. Easily visible friction disc indicates when...

Electric Brakes and Clutches ATT Series – Advanced Technology Brakes and Clutches Dimensions .875 (22.25) Wire Protector included with Clutch Key and Retaining Ring included with Clutch Optional Restraining Strap Clearance for 1/4" bolts Shaft Bore and Keyway Dimensions Model Unit Bore ATTC-25 .5025 .5005 Bore-to-size data drawing for pulley, sheaves, and sprockets. See Bore-to-size data below. 1/4-20 UNC thru. (2) Jackscrew Holes on X dia. V Detail View Bore-to-size Requirements Bore-to-size data drawing for pulley, sheaves, and sprockets. See Bore-to-size data below. Bore-to-Size Data No. of...