Motion Control
    Planetary Gearheads

Planetary Gearheads

Micron TRUE planetary gearheads from Boston Gear are ideal for use on high-precision motion control applications that require a high torque-to-volume ratio (ranging from a factor of two to a factor of 100, depending on the ratio), high torsional stiffness, quiet operation, inertial matching and low backlash. These benefits, along with the RediMount motor mounting adapter kit, help stay current with recent improvements in servo motor technology. All of these gearheads are self-lubricating and have high radial load capacity for any given size.

Value:

  • RediMount cost-effective and flexible motor mounting system
  • Precise, compact and low maintenance thanks to TRUE planetary gearing
  • Up to 98% efficiency with the PowerTRUE right-angle gearing
  • Optimum smooth running characteristics, torque capacity and precision thanks to crowned helical gearing

Planetary gearheads increase the torque by the factor of the gearhead ratio and also reduce the motor speed by the gearhead ratio, making it possible to run the motor at a higher, more efficient RPM. The inertia reflected back to the motor is reduced for increased stability. Finally, using a planetary gearhead allows machine builders to use a smaller, less expensive motion control package.

Helical gearing improves the performance of a planetary gearhead by increasing the contact ratio. The contact ratio is defined as the number of teeth in mesh at any given time. The typical contact ratio for spur gearing is 1.5 while the contact ratio for helical gearing is more than doubled to 3.3. The increased contact ratio provided by helical gearing delivers:

  • 30% to 50% more torque capacity than spur type planetary gearing
  • Increased load sharing which results in longer life
  • Smoother and quieter operation
  • A reduction in backlash of 2 arc-min

Micron has the largest selection of planetary gearhead products in the world. With over 2,000 size and ratio combinations to choose from, Micron will have the gearing solution for almost any application.

Available gearheads:

  • PowerTRUE
  • AquaTRUE
  • XTRUE
  • NemaTRUE
  • DuraTRUE
  • ValueTRUE
  • UltraTRUE
  • EverTRUE

PowerTRUE Right-Angle Gearing

PowerTrue right-angle gearheads offer lower backlash accomplished through single-axis mesh adjustment, a compact right-angle design utilizing a high-tech face gear, and whisper-quiet operation due to high contact ratio. Right-angle gear meshes are typically limited to ratios from 1:1 to 3:1 when using standard bevel gears. Compared to these designs, the PowerTRUE 90 gear increases the ratio range to 5:1. The key to higher torque density is a unique tooth design, created by complex machining made practical with advanced CNC equipment and software. In the design, multiple teeth in the face gear simultaneously mesh with a standard involute pinion. The continuous tooth engagement yields a high contact ratio between the gear and the pinion, boosting torques to new levels and efficiency to 98%.

AquaTRUE Watertight Planetary Gearheads

Until now, manufacturers have been unable to use gearheads in many applications involving harsh environments because there was not a product available that met those needs. Micron’s AquaTRUE gearhead combines the high performance and torque capacity of Micron’s TRUE Planetary gearheads with features specifically designed to meet the strict requirements of applications such as food and beverage handling, packaging and dispensing. The AquaTRUE’s IP66/IP67 and IP69K protection is able to handle caustic cleaning chemicals as well as high pressure washdown. The AquaTRUE is engineered to be placed anywhere in the application’s design, regardless of environmental factors, eliminating the cost of additional components such as enclosers, shielding or mechanical transmissions.

XTRUE Gearheads

The XTRUE Series is a new precision gearhead that complements Micron’s existing gearhead line, already the largest selection of planetary gearheads in the world. XTRUE gearheads can move a larger load more easily and quietly through improved load capacity, lower backlash and quieter operation. Experience less downtime with the flexible RediMount system, which mounts to any motor in three easy steps: align, mount and tighten. Simplify replacement with the tapped face output, which enables easy drop-in replacement.

For more information on Planetary Gearheads from Boston Gear (Micron), as well as how Power Motion can help, please contact us. We have locations in St. Louis, Kansas City and Little Rock, providing distributor and automation solutions services for Missouri, Kansas, Arkansas, Nebraska, Southern Illinois, Southern and Western Iowa, Northern Louisiana, Eastern Oklahoma and Northeast Texas. Not all products available in all areas.

Micron TRUE Planetary Gearheads