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A&F Corporation, a paper industry machinery builder, recently completed the start-up of a slitter/ rewinder machine at a U.S. paper mill. The slitter/ rewinder is used for processing heavy paperboard into liner-board for beverage packaging. 

The machine's web unwind-stand has an unusually high torque requirement, which Dover Flexo Electronics (DFE) was able to meet with a large (thirty-inch diameter), heavy-duty pneumatic tension brake: the new 3000 Series Dual Disc brake.  DFE supplied three of these brakes for use on the single unwind stand built by A&F. 

The paperboard (150 to 450 lb.) being run is 128 inches wide and from rolls that weigh 24,000 pounds starting with a roll diameter of 90 inches.  The line runs at a speed of about 3,500 feet per minute and at 2,800 pounds of total tension. The application requires 127,000 in-lbs (11,000 ft-lbs) of torque from the brake system.

The 3000 series Dual Disc brake, Dover's largest, was designed to meet heavy industrial demand, particularly from the paper industry, and has been added to DFE's range of brake products as the largest brake the company manufactures.

The 3000 series brake is offered with DFE's unique Universal Actuator system, which allows quick changeover of worn friction pads when replacement is necessary.  All Heavy-Duty Dual Disc brakes from DFE are covered by a 5-Year Warranty and a separate "No-Squeal" Warranty. 

Download a copy of DFE's new Dual Disk Brake Catalog.  ( This is a 1mb file.) 
 
 

-- Glyn Green
Technical Support Manager
techsupport@dfe.com
January 2001