The UltraTRUE™ Series combines our precise helical crowned gearing with TRUE Planetary™ orientation to create the smoothest and quietest gearheads on the market today, with only 4 arc-minutes of backlash. The internal gear is cut directly into the stainless steel housing to increase torque capacity and avoid slippage. We carry many ratios in stock for immediate delivery though our Gearhead Express program.

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Companion Products

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  • Backlash: 4 arc-min
  • Ratios available from 1:1 through 100:1
  • In-line and right-angle models
  • Helical crowned HRC 55-60 steel gears
  • Tapered roller bearings
  • Sealed deep-groove ball bearing
  • RediMount™ mounting system
  • Single-piece output housing with integral internal gear
  • Anodized aluminum housing



  • Helical-cut, crowned gears provide higher torque capacity, precision and stiffness compared to straight-cut gears
  • PowerTRUE™ gear technology provides high torque capacity in a compact package for right-angle applications
  • High axial and radial load carrying capacity
  • Smooth, quiet operation with minimal backlash
  • Quick, error-free mounting to almost any motor
  • Lightweight, corrosion-resistant housing  




Ready for Immediate Delivery
Mounting Type Inline Right-angle
Precision 4 arc-minutes 4 arc-minutes
Frame Sizes (mm) 60,75,90,100,115,140,180,220 60, 75, 90, 100, 115, 142, 180
Torque Capacity
Nm (lb-ft)
up to 3300 (2434) up to 3111 (2295)
Ratio Availability 4:1,5:1,7:1,10:1,16:1,20:1,25:1,28:1,
Radial Load Capacity
N (lbf)
up to 37910 (8523) up to 37910 (8523)
Mounting System RediMount™ RediMount™
US Production