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MODELS: GBA, GBAM, GBB, GBBM, GBC, GBCM, GBD, GBDM, GBE, GBEM
CAUTION: This product contains rotating parts which could cause injury at time of installation.
Appropriate protective guards should be installed by the user according to his use of this product.
All of the information herein is the exclusive proprietary property of Maxcess International, and is disclosed with the
understanding that it will be retained in confidence and will neither be duplicated nor copied in whole or in part nor
be used for any purpose other than for which disclosed.
Copyright 2008, all rights reserved.
Periodically there will be updates to this manual. The latest version is available at www.magpowr.com or by calling
1-800-MAGPOWR (624-7697).
THEORY OF OPERATION
The brake construction consists of two stators, a rotor, a coil assembly, magnetic powder, and two
bearings. The bearings support and align the rotor with the stators, and allow the rotor to rotate within the
brake assembly. The magnetic powder occupies the space between the stators and the rotor, and
represents a key element in the operation of the brake.
The stators are connected to the machine frame through a torque arm and remain stationary. The rotor is
connected to a rotating machine shaft, which supports the weight of the brake. The magnetic powder
functions as the adjustable bond or link between the stators and the rotor. It is the medium for the
transmission of torque.
An electric current in the coil creates a magnetic field (flux), which passes through the stators, magnetic
powder, and the rotor. The flux aligns the powder particles, forming a bond or link between the stators
and the rotor. The strength of the bonding action (torque) is proportional to the amount of current in the
coil. The torque is transmitted to the rotating shaft through the rotor.
MECHANICAL INSTALLATION
1. The rotor shaft centerline must be mounted within 30° of the horizontal plane.
2. Prior to installation, manually check the rotation of the rotor to observe that it is smooth and free of
binding or scraping.
3. Mount the brake on the shaft and tighten the two set screws.
4. Attach a torque arm between the extension bolt and the machine frame with a "loose" or "floating"
mount to prevent binding forces on the brake bearings. The torque arm will prevent the rotation of the
brake stators. Protective guards should be installed by the user according to his use of this product.
850A169-1
03/09 Rev. H
222 W. Memorial Road, Oklahoma City, OK 73114-2317
Phone: 1-800-624-7697
www.magpowr.com
INSTRUCTION MANUAL
GLOBAL SERIES BRAKE
1
Fax: 405-755-8425
E-mail: magpowr@magpowr.com
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Summary of Contents for Magpowr GLOBAL Series
- Page 1 Copyright 2008, all rights reserved. Periodically there will be updates to this manual. The latest version is available at www.magpowr.com or by calling 1-800-MAGPOWR (624-7697). THEORY OF OPERATION The brake construction consists of two stators, a rotor, a coil assembly, magnetic powder, and two bearings.
-
Page 2: Electrical Installation
ELECTRICAL INSTALLATION For both 24vdc and 90vdc devices: 1. Connect vdc power source to the terminals marked 1, 2. 2. Connect protective grounding circuit* to the terminal marked with the P.E. symbol NOTE: Both the functional-earth and protective-earth connections to ground are mandatory. The protective-earth ground connection is required for safety and regulatory compliance. -
Page 3: Maintenance
MAINTENANCE Due to its small number of moving components and its basic design, maintenance of the brake is generally necessary only after extended service. When a problem appears in the system, ensure that all couplings, belts, etc., and the control device are functioning properly. Use the Troubleshooting guide below to determine the cause of the problem. - Page 4 Remove the powder fill screw (and washer for GBA, GBAM, GBB & GBBM only) from the right stator. For all other models remove the blind rivet. NOTE: Discard all bearings, powder seals, gaskets, snap rings and magnetic powder. These parts must be replaced, and are included in the repair kit. RE-ASSEMBLY IMPORTANT: Re-assembly of the brake must be performed in a clean, dry area.
- Page 5 Support the left stator assembly on a bench with the cross–drilled holes facing up. Wrap a 6" x 6" (152 mm x 152 mm) piece of stiff paper, thin plastic, or shim stock around the rotor shaft, forming a sleeve. This will allow the powder seal to slide over the end of the rotor shaft and the external snap ring groove.
- Page 6 Install the collar and set screws onto the rotor shaft. COIL RIGHT STATOR LEFT STATOR COIL AND GASKET COIL GASKETS CONFIGURATION ON GBC AND GBD MAGNETIC POWDER ROTOR ASSEMBLY POWDER FILL SCREW INTERNAL SNAP RINGS EXTERNAL SNAP RINGS 9 COLLAR POWDER SEALS PARTS LIST BEARINGS 6...