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Planetary Gearheads | Planetary Gearhead Products

What makes Thomson's Planetary Gearheads superior?

Until recent years, planetary gearheads were selected for high precision motion control applications based on high torque to volume ratio, high torsional stiffness and low backlash. But as servo motor technology improved, Thomson answered the growing need for planetary gearhead improvements with our high-torque, whisper-quiet helical gearhead. We accomplish this by combining the positive attributes of gear crowning and helical gearing with planetary construction.

Thomson is able to broaden its planetary gearhead capabilities through its technologies, design types and mounting flexibilities to the largest selection of products in the world. With over 2,000 size-and-ratio combinations to choose from, Thomson will have the planetary gearhead solution for almost any application.

  • Direct inline planetary gearheads (DuraTRUE, UltraTRUE, EverTRUE, NemaTRUE, UltraTRUE, XTRUE) offer a variety of housing types from anodized aluminum to stainless steel. The HRC 55-60 steel gears provide superior wear resistance and increased backlash integrity.
  • Right angle planetary gearheads (DuraTRUE, ValueTRUE, NemaTRUE, UltraTRUE) use our PowerTRUE technology utilizing a right angle gear-set mesh in a unique tooth design. This creates higher torque densities and increases the right-angle ratio range up to 5:1, extending the overall gearhead ratio range from 1:1 to 500:1.
  • The Redimount motor mounting system allows an easy, quick connection of our True Planetary gearheads to virtually any motor. The innovative design with adapter sleeve and input housing enables mounting of the planetary gearhead in one working process.
  • Thomson packages the proven performance of NemaTRUE and ValueTRUE planetary gearheads with AKM servomotors to provide a single unit, ready-to-mount integrated solution. Built for high torque applications, AKM gearmotors offer the precision and performance required by the most demanding motion control environments.

AquaTRUE™ True Planetary Gearheads

Thomson's AquaTRUE gearhead design meets the strict requirements of harsh environmental applications; such as, food and beverage handling, and packaging and dispensing. The AquaTRUE's IP66/IP67 and IP69K protection is able to handle caustic cleaning chemicals as well as high pressure washdown. This eliminates the cost of additional components such as enclosers, shielding, or mechanical transmissions. The 304 stainless steel housing eliminates the concern for rust or any type of corrosion. A laser etched permanent product label and a smooth, round external housing that is designed without any external seams or corners for bacteria to collect.

AquaTRUE motor planetary gearheads

XTRUE™ True Planetary Gearheads

The XTRUE Series is a new precision gearhead that complements the Micron® True Planetary™ Gearheads line from Thomson. With improved load capacity, a flexible mounting system, easy drop-in replacement, and compliance with EU Directive 2002/95/EC (RoHS), the XTRUE offers robust features in a cost-effective and efficient solution.

XTRUE planetary motor gearheads

ValueTRUE True Planetary Gearheads

ValueTRUE is the low cost, helical crowned True Planetary® gearhead. The internal gear is cut directly into the stainless steel output housing casting to increase torque capacity without increasing the cost. The helical cut of the gears provides higher torque capacity, precision and stiffness when compared to straight cut gears. This technology allows Thomson Micron® to offer a high performance helical planetary gearhead at an economical price.

ValueTRUE True Planetary Gearheads

UltraTRUE True Planetary Gearheads

The UltraTRUE True Planetary® gearhead combines the positive attributes of Helical Crowned gearing with True Planetary orientation to create a smoothest and quietest gearheads on the market today. The internal gear is cut directly into the stainless steel housing to increase torque capacity and avoid slippage. The Helical cut of the gears provides higher torque capacity, precision and stiffness when compared to straight cut gears. Thomson Micron carries the UltraTRUE in many ratios stocked and available for immediate delivery though the Thomson Micron Gearhead Express program.

UltraTRUE planetary motor gearhead series

EverTRUE True Planetary Gearheads

The EverTrue True Planetary®, RediMount compliant gearhead is designed to run in a continuous duty cycle. This continuous duty gearhead is lubricated for life and rated to last a minimum of 30,000 hours in a 24 hour/day, 7 day/week application.

EverTRUE planetary motor gearheads

DuraTRUE True Planetary Gearheads

The DuraTRUE™ is a high precision, True Planetary gearhead that utilizes the Thomson Micron® RediMount system. With a variety of shaft configurations, you can design your system in the smallest of envelopes eliminating the need for coupling. The “T” design allows the ability to run two axes with one motor. The DuraTRUE has many ratios in stock for immediate delivery through the Thomson Micron Gearhead Express program.

DuraTRUE planetary motor gearheads

NemaTRUE True Planetary Gearheads

In addition to the standard NEMA frame sizes, the NemaTRUE is now available in three new metric sizes (60, 90 and 115mm) and has been upgraded with the innovative Micron® RediMount system from Thomson. Thomson Micron now brings you a True Planetary®, RediMount compliant gearhead that is an economical solution for your application. The NemaTRUE has many ratios in stock for immediate delivery through the Thomson Micron Gearhead Express program.

NemaTRUE planetary motor gearheads

AKM Gearmotors

Thomson Micron® offers the largest selection of TRUE Planetary® gearheads in the world. Our gearmotor product line includes both the NemaTRUE and the ValueTRUE gearheads, ranging in frame size from 60 mm to 142 mm and ratios from 3:1 to 25:1. Helical Crowned TRUE Planetary design is industry leading in smoothness, torque and precision.

AKM gearmotor

RediMount Motor Mounting System

The RediMount™ motor mounting system allows an easy, error free and quick connection of Thomson Micron’s TRUE Planetary® gearheads to just about motor available in the market. The innovative design, with adapter sleeve and input housing, features gearhead mounting within one working process.

Redimount gearhead motor mounting system

PowerTRUE™ 90 Technology

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%. Available on NemaTRUE™ 90°, DuraTRUE™ 90°, UltraTRUE™ 90°, ValueTRUE™ 90°

PowerTRUE gear mesh technology
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