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VersaPlanetary Gearbox

The VersaPlanetary base options have been updated for the 2017 season. Information on the updates can be found near the bottom of this page.  

Modular planetary gearbox system designed specifically for use by FRC teams. The easiest way to put power where you need it in your design.

  • Adapts a variety of FRC motors (BAG, MiniCIM, RS-550, RS-775, AM-9015, and CIM)

  • 4 output shaft options make integration easy

  • Six different planetary stages provide dozens of gearing options from 3:1 to 100:1

VersaPlanetary Gearboxes ship disassembled. Please grease before assembly.

SKU: versaplanetary

Availability: In stock

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The VersaPlanetary is a battle-tested modular planetary gearbox system designed specifically for use in the FIRST ® Robotics Competition 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.

Motors can be interfaced with the gearbox using the innovative VersaCoupler, which utilizes a clamping collar design to attach a variety of motors without pressing on a motor pinion. Just find the correct motor mounting plate, mount your motor into place, tighten down one clamping screw, and you're good to go. The VersaCoupler does the rest; innovative industry technology brought to the FIRST ® Robotics Competition market.

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.

  • Use with BAG, RS-550, 775 Series and AM-9015 motors
  • Interface with the CIM and Mini CIM motors with the VersaPlanetary CIM Adaptor
  • Dozens of gear ratios from 3:1 to 100:1
  • Dual Motor Input available
  • AGMA 11 quality steel gears

VersaPlanetary v1 vs VersaPlanetary v2

The VersaPlanetary v2 assembly is now held together with screws that install on the "back" (motor side) of the housing. This means that the gearbox can be disassembled to change gearsets without removing the gearbox output from the robot. Bosses have been added to the sides of the gearbox so when it is side-mounted you can "crank down" on the mounting screws without accidentally misaligning a ring-gear stage. The v1 & v2 input and output blocks cannot be mixed and matched - A v2 input block must be used with a v2 output block. Ring gears and gear kits are compatible between v1 & v2


The base VersaPlanetary kits now include an optional pilot ring that will allow users to pilot the VersaPlanetary on a 0.75" hole, instead of relying on screw clearances to locate the gearbox. The plastic motor mounting plates now pilot on the input block.

Tech Specs


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
    • (1) M2 x 6mm Hardened and Ground Steel Dowel Pin
    • (2) #8-32 x 1.25" Socket Head Cap Screw

VersaPlanetary Gear Kits with Ring Gear
    • (1) Selected VersaPlanetary Gear Ratio Kit
    • (1) Ring Gear Add-On Slice
    • (1) M2 x 6mm Hardened and Ground Steel Dowel Pin
    • (2) #8-32 x 1.75" Socket Head Cap Screw

VersaPlanetary Dual Motor Input
Downloads & Docs VersaPlanetary v2 User Guide (PDF)
VersaPlanetary User Guide (PDF)
VersaPlanetary v1 vs VersaPlanetary v2 (PDF)
VersaPlanetary v2 Screw Guide (PDF)
VersaPlanetary Motor Mounting Guide (PDF)
VersaPlanetary Dual Motor Input Assembly Instructions (PDF)
VersaPlanetary Load Ratings Guide (PDF)
VersaPlanetary Ratio Identification Guide (PDF)
Specification VEXpro Gears Require Lubrication. We recommend white lithium grease.
Material Type Gears: Rockwell C 55-62 Case Hardened Steel
Gearbox Housing: 6061-T6 Aluminum
Shafts: 7075-T6 Aluminum
Material Finish Gears: Rockwell C 55-62 Case Hardening
Gearbox Housing: Black Type II Anodizing
Shafts: Black Type III, Hard Coat Anodized
CAD Model Example v2 Gearboxes:
VersaPlanetary v2 Single Stage 10:1 with BAG (STEP)
VersaPlanetary v2 Single Stage 10:1 with RS 550 (STEP)
VersaPlanetary v2 Single Stage 10:1 with 775 Series (STEP)
VersaPlanetary v2 Single Stage 10:1 with AM 9015 (STEP)
VersaPlanetary v2 Two Stage 100:1 with BAG (STEP)

Example v1 Gearboxes:
VersaPlanetary v1 Single Stage 10:1 with BAG (STEP)
VersaPlanetary v1 Single Stage 10:1 with RS 550 (STEP)
VersaPlanetary v1 Single Stage 10:1 with 775 Series (STEP)
VersaPlanetary v1 Single Stage 10:1 with AM 9015 (STEP)
VersaPlanetary v1 Two Stage 100:1 with BAG (STEP)

Motor Mounting Plates with Pilot:
BAG Motor Motor Mounting Plate (STEP)
RS 550 Motor Mounting Plate (STEP)
775 Series Motor Mounting Plate (STEP)
AM 9015 Motor Mounting Plate (STEP)

Dual Motor Input Options:
217-3141 (Dual Motor Input with BAG Motors) (STEP)
217-3141 (Dual Motor Input with RS 550 Motors) (STEP)
217-3141 (Dual Motor Input with 775 Series Motors) (STEP)

VersaPlanetary CIM Adaptor:
217-4018 (VersaPlanetary CIM Adaptor) (STEP)

Add-On Gear Kits:
217-2816 (Ring Gear Add-on Kit) (STEP)
217-2817 (VersaPlanetary 3:1 Gear Kit (STEP)
217-2818 (VersaPlanetary 4:1 Gear Kit (STEP)
217-2819 (VersaPlanetary 5:1 Gear Kit (STEP)
217-3102 (VersaPlanetary 7:1 Gear Kit (STEP)
217-3106 (VersaPlanetary 9:1 Gear Kit (STEP)
217-2820 (VersaPlanetary 10:1 Gear Kit (STEP)
Drawing VersaPlanetary v2 Gearbox (PDF)
VersaPlanetary Gearbox (PDF)
VersaPlanetary Dual Input Stage (PDF)
All VersaPlanetary Output Shafts (PDF)
217-2816 (Ring Gear Add-On Kit) (PDF)
217-3564 (Motor Mounting Plates with Pilot) (PDF)
217-4018 (VersaPlanetary CIM Adaptor) (PDF)
Weight Base VersaPlanetary Kit (with Output Shaft): 0.36 lb
Gear Kits with Ring Gear: 0.2 lb each

The theoretical weight for your VersaPlanetary can be calculated as follows:
Base Kit + (Number of Stages × Weight of a Stage)

Example VersaPlanetary Weights:
Single Stage: 0.36 lb + 0.2lb = 0.56 lb
Two Stage: 0.36 lb + (2 × 0.2 lb) = 0.76 lb