Turnabot Planetary 12

12 mm All-Metal Planetary Gearmotors

They’re here! After years of pushing suppliers and breaking prototypes, we finally have what combat-robot builders have been asking for: 12 mm gearmotors with true all-metal planetary gearboxes—purpose-built for our weight classes and abuse cases. As far as we can tell, these are the only 12 mm, all-metal planetaries designed specifically for our market—and they’re as light as 13.8 g.

Why a Planetary (not spur)?

• Impact survival. Planetaries distribute load and shock through the carrier and ring, resisting the shaft bending and tooth shear that sideline spur boxes.
  

• Significantly higher torque capacity. Multiple planet gears share the load—more push in the same 12 mm envelope.
  

• Right-size output shaft, rock-solid wheel retention. 16 mm shaft with a machined retention notch—ships with an included circlip (compatible with other retention hardware). Massively improved wheel retention under weapon hits and wall slams.

The Planetary 12 lineup (4 options)

Pick the speed/weight profile that fits your drivetrain and battery:

• N10 — Ultralight planetary that still takes a hit. (weight: 13.8 g)
  • Up to two N10 motors per drive side using a Standard Malenki on 2S
  • Up to two N10 motors per drive side using a Malenki HV on 3S

• N20 — The most popular size, now with planetary strength. (15.2 g)
  • One N20 motor per drive side using a Standard Malenki on 2S
  • Up to two N20 motors per drive side using a Malenki HV on 2S
  • One N20 motor per drive side using a Malenki HV on 3S

• N30 3S — Essentially the N20 in a N30 size, more thermal mass for more battle time, particularly on 3S. (17.8 g)
  • One N20 motor per drive side using a Standard Malenki on 2S
  • Up to two N20 motors per drive side using a Malenki HV on 2S
  • One N20 motor per drive side using a Malenki HV on 3S

• N30 2S — The “monster” of the current offerings. Enormous torque and the associated current requirements. (17.8 g)
  • Can use one N30 motor per drive side using a Malenki HV on 2S
  • For more motors and/or more voltage use a Scarab

STLs:

Planetary N10 STL

Planetary N20 STL

Planetary N30 STL

STEPs:

Planetary N10 STEP

Planetary N20 STEP

Planetary N30 STEP

Don't miss the video clip of FlipFrenzy, powered by the Planetary 12 motors, tanking hits from the truly frightening vert Watermelon Slice, winning the match, and having all components continue dominating the competition.