NemaTRUE™

NemaTRUE™ Planetary Gearheads

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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.

Let Thomson Help You Make Your Selection!


Ready for Immediate Delivery
Mounting Type Inline Right-angle
Precision 13 arc-minutes 13 arc-minutes
Frame Sizes (mm) 17, 23/60, 34/90, 42/115 23, 34, 42
Torque Capacity
Nm (lb-ft)
up to 180 (133) up to 255 (188)
Ratio Availability 3:1, 5:1, 10:1, 15:1,  25:1
30:1, 50:1, 100:1
1:1, 2:1, 3:1, 4:1, 5:1P, 5:1T, 6:1, 9:1
10:1, 12:1, 15:1, 20:1, 25:1, 30:1, 40:1
50:1, 60:1, 75:1, 90:1, 100:1, 120:1
125:1, 150:1, 200:1, 250:1, 300:1
400:1, 500:1
Radial Load Capacity
N (lbf)
up to 3730 (839) up to 2900 (652)
Mounting System RediMount™ RediMount™

NemaTRUE™ Highlights

  • Sealed deep groove ball bearings provide high radial load carrying capability
  • HRC 55-60 steel gears provide superior wear resistance and increased backlash integrity
  • Sealed deep groove ball bearing provides precision alignment of sun gear
  • RediMount™ system provides error-free motor installation
  • Anodized aluminum housing reduces weight and prevents corrosion