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VersaPlanetary Gearbox
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VersaPlanetary Gearbox

The VersaPlanetary is a battle-tested modular planetary gearbox system designed specifically for use in the FIRST ® Robotics market. Designers choose one of four output shafts, configure a single-stage planetary using one of six different reductions, or build a multi-stage gearbox using any of the different ratio combinations.

All of the VersaPlanetary gearboxes include mounting plates & hardware for typical FIRST ®Robotics Competition motors (550, 775 Series, 9015 size motors, and the VEXpro BAG motor) -- these plates are custom designed for each motor to provide perfect piloting and high efficiency.

What good is a versatile system if it’s not easy to take apart and re-configure? That’s why we released the VersaPlanetary V2 with assembly screws in the back of the gearbox. This makes it easy to change gear ratios, encoders, motors, etc. without have to take apart your entire mechanism. Another feature of the VersaPlanetary that makes it easy to use is the removable shaft coupler system. This system allows you to change motors without the need to buy a special pinion and press it on. In addition, the VersaPlanetary uses the same pilot and bolt circle as the CIM, allowing you to run a VersaPlanetary anywhere a CIM motor mounts.

The VersaPlanetary has a variety of options for mounting. Each gearbox has four 10-32 threaded holes on top and bottom of its housing for easy side mounting. In addition, there are also holes on the front which allow face-mounting. Conveniently, these holes are on a 2" bolt circle; this is the same as the CIM motor - anywhere you can mount a CIM-style motor, you can mount a VersaPlanetary.

Other features include:

  • Six different planetary gear stages can be used to create up to 72 unique gear ratios, the most of any COTS gearbox in FRC or FTC.
  • Adapts to a variety of FRC motors (BAG, Mini CIM, RS-550, RS-775, 775pro, Redline, AM-9015, and CIM)
  • Adapts to a variety of FTC motors (AndyMark NeveRest, REV HD Hex Motor, Tetrix TorqueNADO)
  • ABEC-1/ISO 492 Class Normal Bearings, rated for 20,000+ RPM
  • AGMA-11 quality planet and sun gears made from hardened 4140 steel
P/N Description Material CAD Drawings Weight
217-2817 VersaPlanetary 3:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.136 lbs
217-2818 VersaPlanetary 4:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.143 lbs
217-2819 VersaPlanetary 5:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.155 lbs 
217-3102 VersaPlanetary 7:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.146 lbs
217-3106 VersaPlanetary 9:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.790 lbs
217-2820 VersaPlanetary 10:1 Gear Kit Rockwell C 55-62 Case Hardened Steel STEP - 0.153 lbs
217-6043 VersaPlanetary 180° Drive Gusset Kit 6061-T6 Aluminum STEP PDF -
217-2816 VersaPlanetary Ring Gear 6061-T6 Aluminum STEP PDF 0.200 lbs
(With Gear Kit)
217-5832 VersaPlanetary Lite Ring Gear Glass-Filled Nylon STEP PDF 0.180 lbs
(With Gear Kit)
217-4973 VersaPlanetary v2 Base Kit, 1:1, 1/2" Hex Output Gears: Rockwell C 55-62 Case Hardened Steel
Shafts: 7075-T6 Aluminum
Gearbox Housing: 6061-T6 Aluminum
Example Single Stage 10:1 (BAG)
Example Single Stage 10:1 (RS 550)
Example Single Stage 10:1 (RS 775)
Example Single Stage 100:1 (BAG)
PDF 0.360 lbs
(No Motors)
217-5995   VersaPlanetary Lite Base Kit, 1:1, Universal Female Output Shaft - STEP PDF 0.220 lbs
(No Motors)
217-2894   VersaPlanetary 3/8" Hex Output Shaft 7075-T6 Aluminum STEP PDF -
217-2897   VersaPlanetary 1/2" Hex Output Shaft 7075-T6 Aluminum STEP PDF -
217-2895   VersaPlanetary 1/2" Round Output Shaft with 1/8" Keyway 7075-T6 Aluminum STEP PDF -
217-2893 VersaPlanetary CIM Motor Output Shaft 7075-T6 Aluminum STEP PDF -
217-5839 VersaPlanetary Universal Female Output Shaft Kit 7075-T6 Aluminum 1/4" Square
1/2" Hex
3/8" Hex
217-6434 VersaPlanetary Press On Motor Coupler (775pro Motor) Sintered Steel STEP PDF 0.032 lbs
217-6789 VersaPlanetary Press On Motor Coupler (Falcon Motor) Sintered Steel STEP PDF 0.023 lbs


Kit Contents

VersaPlanetary Base Options (ships partially assembled)

  • (1) VersaPlanetary Input Housing
  • (1) VersaPlanetary Output Housing with selected output shaft
  • (1) Output Shaft
  • (1) VersaPlanetary Input Coupler
  • (1) VersaPlanetary Motor Mounting Kit
  • (1) VersaPlanetary Motor Mounting Plates with Pilot
  • (1) Wave Washer .839 ID X 1.08 OD X .012 thick
  • (1) Retaining Ring, Metric MSH-15
  • (2) Ball Bearing, Double Shielded 15x28x7
  • (2) #8-32 x 1.25" Socket Head Cap Screw

217-2816: Ring Gear

  • (1) Ring Gear Add-On Slice
  • (2) #8-32 x 1.75" Socket Head Cap Screw

217-5994: VersaPlanetary 0-2 Stage Screw Kit 

  • (2) #8-32 x 1.125" Socket Head Cap Screw
  • (2) #8-32 x 1.625" Socket Head Cap Screw
  • (2) #8-32 x 2.125" Socket Head Cap Screw