Drum Motor Drives feature internal braking.

Press Release Summary:

Drives include RTM electromechanical brake for up to 25 starts and stops per minute. Clutch brake (CBTM) eliminates in-rush of start-up current and provides up to 80 starts and stops per minutes. Horsepower range is from 0.50 to 20.0 hp, and standard face widths range from 16.73 to 39.38 in., depending on motor size. Drum speeds are fixed and range from 28 to 1369 ft/min to match unlimited number of applications. Drives are suitable for high indexing conveyor applications.

Original Press Release:

Drum Motor Drives with Internal Braking Improve Performance in High Indexing Conveyor Belt Applications

A complete line of drum motor drives with internal braking, that provides maintenance-free operation in high indexing conveyor applications, is available from Van der Graaf Inc. The product line includes the RTM brake for up to 25 starts and stops per minute and a patented clutch brake (CBTM) for up to 80 starts and stops per minute. Typical high levels of conveyor drive indexing for barcode scanning, etc. are often found in a wide variety of applications, such as: baggage handling, manufacturing
and assembly lines, packaging operations and document/package handling and palletizing, among others.

The economical RTM brake is an electromechanical brake that provides a higher braking torque when compared to conventional drum motors used in sorting, merging and queue conveyors. The RTM brake motor has an expected service life of 5 million cycles.

The clutch brake CBTM for internally powered drum motor drives allows the internal drum motor to run continuously and engages the pulley shell only when conveyor movement is desired. The 8-1/2-inch diameter drum motor equipped with the clutch brake eliminates the in-rush of start-up current that is a common cause of heat generation in the conveyor drive. Disengaging the clutch brake allows the motor to operate in "neutral", minimizing heat build-up. A cooler running drive is energy efficient and reduces operating costs. Allowing the motor to run continuously also extends service life. The drive motor and clutch brake components are all housed within the shell, but are separated in individual chambers.

Additional Benefits

Drum motor installation is quick and easy requiring less than half the time needed to install exposed conveyor drives. The motor's compact, low-profile design eliminates all external parts, such as: motors, gearboxes, chains or belts, pillow block bearings and associated guards.

Efficient and reliable, the motors run at 96 percent efficiency, saving up to 30 percent on power consumption when compared to external drives. The drum motors with internal braking can operate as either: a normal unit, idler unit or brake unit depending on application requirements.

The drum motors with braking have a horsepower range from 0.50 to 20.0 hp. Standard face widths range from 16.73 to 39.38 inches depending on motor size. Drum speeds are fixed and range from 28 to 1369 ft/min to match an unlimited number of applications.

For more information on Drum Motors with the internal braking contact Van der Graaf Inc., 2 Van der Graaf Court, Brampton, Ontario L6T 5R6 Canada, phone 888-326-1476, fax 905-793-8129, www.vandergraaf.com.

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