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In San Bernardino, California, MacroAir Technologies designs and manufactures air circulation products. One of MacroAir's latest innovations, the six-blade high volume low speed (HVLS) industrial fan outperforms the company's own highly successful ten-blade fan series by requiring 40% less aluminum and 13% less power in its manufacture and it weighs in at 30% less.

"We chose motors with carefully matched gear reducers to provide efficiency, reliability, long life and low noise," says Edward Boyd, MacroAir President. "The compact design and footprint of the Lenze gear motors allow us to do more in less space."

GST & SCF Move Massive Fan Blades

For HVLS fans, MacroAir engineers specified the Lenze Americas GST 05 and GST 06 Gearmotors as well as SCF and SCM Series inverters. According to Houston, the GST Series are part of the Lenze Americas L-Force gearing range. "This is an open, modular system that offers many versatile combinations of gearboxes, geared motors, integrated frequency inverters and accessories. They are truly plug-and-drive, easy to handle and easy to integrate."

Engineer Jeff Johnson is enthused about the Lenze GST gearmotors - the quality of the gears, made from case-hardened steel, and the fact that they are helical as opposed to spur. "Helical gearing has the gear teeth cut at an angle in relation to the axis of rotation as opposed to a spur gear where the teeth are parallel to the axis of rotation", explains Johnson, and he continues, "The advantage to a helical is that there is more tooth contact and more of a 'rolling' effect as the gears mesh; with more contact there is more torque and the 'rolling' effect cuts down on the gear noise."

Eight years ago MacroAir started using Lenze gearmotors for their HVLS fans, and their relationship continues to grow. There is good reason, says company president Edward Boyd, summarizing, "Our customers quickly realize that our HVLS fans operate with a degree of dependability that's hard to match. Our engineers demand and value that same unparalleled dependability and our suppliers deliver just that!".

SCF Series Benefits:

  • Multiple Preset Speeds
  • Micro Size
  • Removable Memory Chip (EPM)

GST Series Benefits:

  • Quiet, Smooth Operation
  • Energy Efficient
  • Case hardened Steel Helical Gears
  • Small Footprint of Gearbox and Motor
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Packaging Application

The PositionServos control the rollers that "draw" the material into the area where the bottom is heat sealed, then the liquid is pumped into it and the material indexes down to the next area where the sides and top are heat sealed. The SMVector controls the main shaft, which also functions as the timing for the sealing dies. Both processes use mechanical cams and/or stepper motors to achieve the moves.

HVAC Solutions

Through Their Mechanical contractor, J.M. Zimmer, Inc., the University of Maryland chose Lenze Americas MCH variable frequency drive to control their pumps, cooling towers and building HVAC system. The MCH drive features a built-in PID set-point controller function as well as the automatic 3-contactor drive bypass, which assures full isolation of the VFD electronics and allows the motor to transfer from 'drive' operation and continue running across