UltraPlanetary Gearbox Kit & HD Hex Motor


The UltraPlanetary Gearbox Kit comes with UltraPlanetary Cartridges to support six different final gear reductions ranging from nominally 3:1 to 60:1 allowing for the right amount of torque for the application at hand. The kit has a pinion already pressed onto the motor and pre-assembled cartridges for teams to begin testing and iterating on their design.

The UltraPlanetary System is a cartridge based modular gearbox designed to handle the rigors of the competition and the classroom. The UltraPlanetary System includes an input stage and pinion gear that works the HD Hex Motor and other 550 class motors. Building on the ability to iterate and adjust designs easily using the DUO Build System, the UltraPlanetary System consists of pre-assembled and lubricated cartridges allowing for swapping gear ratios on the fly and with ease. Users can configure a single-stage planetary using one of three different reduction cartridges, build multi-stage gearboxes through stacking individual cartridges together, and choose two different ways for transferring power: either through face mounting directly on the output stage or choosing the length of 5mm hex shaft best suited for the application.

The UltraPlanetary has a variety of options for mounting with four different brackets available for mounting to 15mm Extrusion, C Channel, or U Channel. The UltraPlanetary 550 Motor Pinion Gear (REV-41-1608) included in this kit is pressed on to an HD Hex Motor (REV-41-1291). Additional pinion gears can be purchased on the 550 Motor Pinion product page. 

Gearbox Specifications

  • Module: 0.55
  • Pressure Angle: 20°
  • Materials: Sintered Steel, Glass Fiber Reinforced PA66 Nylon
  • Weight(s):
    • UltraPlanetary w/3 Cartridges and HD Hex Motor, no hardware: 441.5g (0.973lbs)
    • UltraPlanetary w/3 Cartridges, no motor and no hardware: 206.5g (0.456lbs)
    • UltraPlanetary Output Cartridge: 66.5g (0.147lbs)
    • UltraPlanetary Mounting Plate: 33.5g (0.074lbs)
    • UltraPlanetary 3:1 Cartridge: 35.5g (0.078lbs)
    • UltraPlanetary 4:1 Cartridge: 34.0g (0.075lbs)
    • UltraPlanetary 5:1 Cartridge: 36.0g (0.079lbs)

HD Hex Motor Specifications - No Cartridges

  • Body Diameter: 37mm
  • Voltage: 12V DC
  • No-Load Current: 400mA
  • Stall Current: 8.5A
  • Free Speed: 6000 rpm
  • Stall Torque: .105 Nm
  • Max Output Power: 15W
  • Encoder Counts per Revolution
    • At the motor - 28 counts/revolution

Kit Contents



CAD & Drawings