The MAXPlanetary System is a cartridge-based modular planetary gearbox designed from the ground up for NEO-class motors. The design of the MAXPlanetary has been carefully optimized to provide torque density unavailable in FRC up until now.

The MAXPlanetary System is intended for use with the NEO Vortex Brushless Motor, NEO Brushless Motor, Falcon 500, Kraken X60, and CIM motors. It also supports NEO 550 and 775 size motors (775pro or AM RedLine). Building on the ability to iterate and adjust designs easily, the MAXPlanetary System consists of 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 or build multi-stage gearboxes through stacking individual cartridges together. The user can use the included 1/2in hex shaft or use a custom length of hex shaft best suited for the application. The gearbox also provides two mounting options, face mount and side mount, for ultimate flexibility in your robot design.

The MAXPlanetary Base Kit (REV-25-2109) is the entry point into using the MAXPlanetary System. This base kit includes a universal input stage, 1/2in hex socket output, hardware pack, 8mm keyed input coupler kit, and a 1/2in rounded hex shaft. Purchase a MAXPlanetary 3:1 Cartridge (REV-21-2101), MAXPlanetary 4:1 Cartridge (REV-21-2102), MAXPlanetary 5:1 Cartridge (REV-21-2103), or MAXPlanetary 9:1 Cartridge (REV-21-2129) to complete your system. Add a NEO Brushless Motor (REV-21-1650) or an adapter kit if you want to use a different motor, like the new MAXPlanetary 14T Spline Input Coupler (REV-21-2124) or MAXPlanetary 15T Spline Input Coupler (REV-21-2138).

MAXPlanetary

החל מ- ‏57.00 ‏₪

2:1, 3:1, 4:1, 5:1, and 9:1 Gear Stages

Socket 1/2in Hex Output

Ability to retain a shaft blind with a #10-32 screw

Compatible with NEO/CIM/Mini CIM (without modifying the shaft)

Keyed Input (no set screws)

MAXPlanetary Input Adapters available for NEO 550 and 775 size motors (775pro or AM RedLine)

Press-fit adapters (no set screws)

(REV-21-2117) MAXPlanetary 550 Input Kit

(REV-21-2118) MAXPlanetary 775 Input Kit

MAXPlanetary Input Couplers available

(REV-21-2110) MAXPlanetary 1/2in Hex Input Coupler

(REV-21-2124) MAXPlanetary 14T Spline Input Coupler

(REV-21-2138) MAXPlanetary 15T Spline Input Coupler

Entirely self-contained Cartridge Gear Stages

All #10-32 Screws used for Assembly and Mounting

Assembled/Disassembled from the Rear

The gear ratio can be changed while the gearbox output is mounted to the robot

Hex key or t-handle clears the motor

Side Mounting Holes

Holes on the top and bottom

Holes are on a 0.5in pitch regardless of number of stages

#10-32 Face Mounting Holes on a 2in Bolt Circle with 2 Orientations

2in Gearbox Height

Gearbox does not protrude above or below common FRC structural tubes

Output shaft stays on 1.0in pitch when the gearbox is mounted using the side holes
Gearbox Dimensions:

0-Stage: 1.500in

1-Stage: 2.000in

2-Stage: 2.500in

3-Stage: 3.000in

Height: 2.000in

Width: 2.438in

Weight:

Base kit (no shaft): 261g (0.576lb)

3:1 gear stage: 155g (0.342lb)

4:1 gear stage: 133g (0.294lb)

5:1 gear stage: 138g (0.303lb)

9:1 gear stage: 122g (0.27lbs)

3in Output Shaft: 27g (0.059lb)

Exact Gear Ratios:

3:1 Stage: 3:1

4:1 Stage: 4:1

5:1 Stage: 5:1

9:1 Stage: 9:1

Gear Pitch: 0.65 Module

Pressure Angle: 20°

Ring Gear Tooth Count: 72

Face Mounting Pattern: #10-32 on a 2in Bolt Circle

Output Socket: 1/2in Hex, 0.438in Deep

Included Shaft: 1/2in Hex, 3.000in Long
The following torque measurements are for a static load condition (i.e. not moving). The torques listed are for the output of the stage.

3:1 Cartridge - Tested to 290Nm [2567in*lbs] (no failure)

4:1 Cartridge - Fails at 270Nm [2390in*lbs]

5:1 Cartridge - Fails at 240Nm [2124in*lbs]

9:1 Cartridge - Fails at 180Nm [1593in*lbs]

1/2in Hex Socket Output - Fails at 250Nm [2213in*lbs]

NOTE: Cantilevered (sideways) load on the output shaft puts additional stress on the gearbox and will reduce the torque the gearbox can take. In addition, shock loads can cause the gearbox to fail in situations where the steady-state torque is still within allowable limits.
The following chart shows which gear cartridge configurations are allowable with different motors. Cells shown in GREEN are allowed, the cells shown in YELLOW will function but are not recommended, and cells shown in RED are not allowed.

These ratings are based on the default current limit on the SPARK MAX (or Talon FX). Increasing the current limit increases the maximum torque the motor can produce and may put components of the gearbox outside of their load rating.

The MAXPlanetary 1:1 Brake Cartridge is a drop-in, self-contained module that instantly adds a reliable bi-directional unpowered hold for any MAXPlanetary gearbox. Designed around the principles of a sprag clutch, sometimes referred to as a torque diode, clutch, or overrunning clutch, this cartridge prevents backdriving in either direction by locking the output whenever the motor or input is stationary. The brake engages automatically when the output velocity exceeds the motor velocity, and it can be reliably released because the unlocking torque is approximately eighty percent of the locking load.

Once assembled into the MAXPlanetary System, the 1:1 Brake engages without the need for servos, pneumatics, or additional actuation. Inside, a set of precision-machined rolling pins and wedges generate a strong mechanical hold that keeps your mechanism in place the moment the motor stops rotating. This allows teams to reduce gear ratios, lighten mechanisms, and increase speed while still maintaining positional stability.

Ideal for end of game climbs and high-speed elevators, the 1:1 Brake Cartridge keeps systems locked in place while eliminating the need to hold position with motor power. This saves battery capacity and reduces motor heat throughout operation. Although the brake can be placed anywhere in a MAXPlanetary stack, we recommend locating it closest to the motor or input to maximize longevity over many seasons. It is not recommended for high moments of inertia like long lever-arms, flywheels, or launcher applications.

A steel internal ring housed in a lightweight aluminum case provides excellent strength and durability while maintaining a compact standard cartridge size. The cartridge integrates seamlessly with all other MAXPlanetary stages and occupies only a single slot.

For teams using three reduction cartridges, the brake remains fully compatible. This setup requires 2.5 inch socket head screws, which are not included in the MAXPlanetary Base Kit.

Super compact. Ultra lightweight. Completely automatic. Add the MAXPlanetary 1:1 Brake Cartridge to your elevator, climbing mechanism, or other application to gain dependable holding power with no added complexity.

Features

Integrates seamlessly with MAXPlanetary System

Entirely self-contained cartridge stage

Recommended placement is nearest the motor

Near the motor - extends the life of the brake

Near the output - extends the life of the gear stages

Steel ring inside aluminum case for high strength and durability while staying lightweight

Specifications

Gearbox Dimensions:

Height: 50.8mm (2in)

Width: 13.72mm (0.54in)

Length: 61.91mm (2.44in)

Face Mounting Pattern: #10-32 on a 2in Bolt Circle

1:1 Brake Cartridge Static Torque (No Failure) at Output: 1,200Nm [10621 in*lb]

1:1 Brake Cartridge Working Torque (No Failure) at Output: 16.95Nm [150 in*lb]

Weight: 154g (0.340lb)
The MAXPlanetary 15T Spline Input Coupler's (REV-21-2138) ISO standard 8mm 15T spline is compatible with the SplineXS (Kraken and Minion) shaft spline.

Material: Steel

Weight:

MAXPlanetary 15T Spline Input Coupler: 18g (0.040lb)
MAXPlanetary 1:1 Brake Cartridge

REV-21-2131 STEP File

REV-21-2131 Drawing

MAXPlanetary 2:1 Cartridge

REV-21-2140 STEP FILE

REV-21-2140 DRAWING

MAXPlanetary 3:1 Cartridge

REV-21-2101 STEP File

MAXPlanetary Cartridges Drawing

MAXPlanetary 4:1 Cartridge

REV-21-2102 STEP File

MAXPlanetary Cartridges Drawing

MAXPlanetary 5:1 Cartridge

REV-21-2103 STEP File

MAXPlanetary Cartridges Drawing

MAXPlanetary 9:1 Cartridge

REV-21-2129 STEP File

REV-21-2129 DRAWING

SKU	PRODUCT NAME	QUANTITY
REV-21-2104	MAXPlanetary 1/2in Hex Socket Output	QTY 1
REV-21-2106	MAXPlanetary Universal Input Stage	QTY 1
REV-25-2107	MAXPlanetary Hardware Pack	QTY 1
REV-21-2108	MAXPlanetary 8mm Keyed Input Coupler Kit	QTY 1
REV-21-2813	1/2in Rounded Hex Shaft, 3.0in Long, Tapped	QTY 1

MAXPlanetary

Features

Specifications

Static Load Ratings

Allowed Stage Configurations

Base Kit

1:1 Brake Cartridge

15T Spline Input Coupler

CAD & Drawings

רשת אורט 25452

ברנקו וייס 351102275

רשתות דרכא, אמית, עתיד ועמל.

משהב"ט 0011024671

האוניברסיטה העברית 1016369

אוניברסיטת בן גוריון

הטכניון 20082