MagnaDrive Breakthrough Technology

MagnaDrive MagnaDrive replaces the physical connection between motors and loads with a gap of air. This air gap eliminates harmful vibration, wear and tear, enhances energy efficiency, increases motor life and protects equipment from overload damage. MagnaDrive’s patented technology transmits power across an air gap with motor and load completely disconnected. The result? Improved reliability, money saved on energy and maintenance, and a big change in the way factories and other industrial and commercial facilities operate.

Principle of Operation

The main components of the MagnaDrive constant speed and delay start magnetic couplings (MGE, FGC, MGD/MGTL) are a Magnet Rotor (1) that is surrounded by a Conductor Rotor (2). The Magnet Rotor and Conductor Rotor are NEVER IN CONTACT with each other. Torque is transmitted through an air gap (3) in the coupling by the relative motion between the Conductor Rotor and extremely powerful permanent magnets contained in the Magnet Rotor. This relative motion creates a magnetic field in the Conductor that forms a very strong flux field with the magnets thereby transmitting torque across the space between the Magnet Rotor and Conductor Rotor components.

MagnaDrive - Principle of Operation

The couplings also have two hubs (4) that are connected to the motor and load shafts with a unique locking mechanism. In addition to all of the components above, the MagnaDrive Adjustable Speed Drives (ASD) also include an actuator mechanism (5) to adjust the air gap spacing between the Conductor Rotor and the Magnet Rotor thus permitting speed control.

MagnaDrive - Locked Rotot Current Comparison MagnaDrive - Coulings

MagnaDrive Couplings provide a disconnected, Cushioned Start. Because the motor does not have to overcome load inertia, the Peak Demand Current and duration of Inrush are reduced significantly. This Cushioned Start results in energy savings (see Graph) and reduced equipment wear. For many applications a lower Peak Demand Current may contribute to lower electrical power rates. Also, the Coupling air gap can be adjusted during installation to operate a pump, fan or blower at less than maximum flow, with sizable energy savings based on the centrifugal Affinity Laws.

Read more about MagnaDrive Couplings

A Wide Range Of Industries And Applications

MagnaDrive - Industry and Applications

Typical Industries and Markets

  • Mining & Cement
  • Power Generation
  • Oil & Gas
  • Chemical Processing
  • Pulp & Paper
  • HVAC
  • Water & Wastewater
  • Irrigation
  • Maritime
  • General Manufacturing
  • And many more

Typical Applications

  • Pumps
  • Fans, Blowers
  • Conveyor Belts, Bucket
  • Elevators & Other Bulk
  • Handling Equipment
  • Compressors
  • Centrifuges
  • Chippers, Shredders
  • Pulpers, Re-Pulpers
  • Crushers, Hammermills
  • Mixers

Product Range

MagnaGuard Standard Couplings (MGE / FGC) MagnaGuard Delay Couplings (MGD) MagnaGuard Torque Limiting Couplings (MGTL) MagnaDrive Adjustable Speed Drives (ASD)
MagnaGuard 1 MagnaGuard-1 MagnaGuard-2 MagnaGuard-3
Image-5 Image-6 Image-7 Image-8
Technical Data
1/2 to 5,000 Hp
0.37 to 3,700 kW
10 to 2,000 Hp
7.5 to 1,500 kW
10 to 2,000 Hp
7.5 to 1,500 kW
10 to 4,000 Hp
7.5 to 3,000 kW
  • No Physical Connection Between Motor and Load
  • Eliminates Vibration Transfer Between Motor and Load
  • Permits Shock Loading
  • Increases Seal and Bearing Life
  • Cushioned Start / Stop
  • Low Maintenance
  • Lower System Downtime
  • Accepts Misalignment
  • Simple Installation
  • Efficient Torque Transfer
  • Up to 70% Energy Savings
  • Lowest Total Cost of Ownership
  • Green Technology
Special Features
• Meets ANSI B73 and API 610 Standards (MGE only) • Advanced Soft Start & Stop • Advanced Soft Start & Stop
• Advanced Overload Torque Protection
• Self-resetting
• Variable Speed Control
• Completely Disengaged Start-up
Ideal for Applications Subject to:
• Vibration, Pulsating Loads, Periodic Load Seizure, Thermal Expansion, and Shock Loading
• Tight Space Constraints • Tight Space Constraints
• Higher Starting Inertia / Torque
• More Frequent Load Seizures
• Higher Starting Inertia / Torque
• A Need For Process Control
• Higher Starting Inertia / Torque