Brackets are used to join different parts of the robot together. Most brackets can be divided into two categories: Motion and Structure. Motion brackets help create strong attachment points for your motion components and any parts of your robot that move. Structure brackets are designed to hold pieces of extrusion together.

Bracket Basics

In the REV ION Build System, there are two major groupings of brackets: MAXSpline and construction. The major distinguishing feature of MAXSpline brackets is a MAXSpline bore or MAX Pattern to support bearings and MAXHubs. Construction brackets are essentially any bracket in the REV ION Build System that does not have a MAXSpline bore. Because the term construction bracket encompasses a broad range of REV ION products, it can be further subdivided as structural brackets and actuator brackets.

Structural brackets act as connectors between structural components. For example, these are the type of brackets you will want to use when connecting MAXTube and Extrusion elements. Actuator brackets on the other hand are intended to mount and support motors and servos.

Follow through the following sections to learn more about brackets:

Motor Mounting Blocks

The Motor Mounting Block is a two-plate, 2-inch #10 bolt circle system that allows pulleys and sprockets to sit between the motor and structure for easier drivetrain routing. Its integrated MAXSpline bores and bearing pockets support the motor shaft to improve alignment and reduce internal load. It supports both three-post configurations for increased clearance and four-post setups for maximum stability.

Motor Mounting Block Specifications

• Plate Material: Aluminum

• Finish: Black Anodized

• Bore: MAXSpline w/ bearing flange pocket

• #10 screw clearance holes on 2in spacing for motor mounting

• Plate Length: 73mm (2.87in)

• Plate Width: 47.6mm (1.87in)

• Plate Thickness: 6.4mm (0.25in)

• Weight (4-Post Assembled): 114g (0.252lb)

• Weight (3-Post Assembled): 96g (0.211lb)

Application Example

Motor Mounting Block

NEO 2.0 mounted onto MAXtube via Motor Mounting Block, driving 56Tooth RT25 Pulley.

MAXSpline Brackets

MAXSpline Brackets are compatible with the REV ION System and are designed to mount to pieces of 2x1in MAXTube - with MAX Pattern while maintaining proper pattern spacing.

In the REV ION Build System, motion brackets are referred to as MAXSpline Brackets because within the ION System, the MAXSpline shape is the core to transmitting motion. The major distinguishing feature of MAXSpline brackets are a MAXSpline bore, or a full MAX Pattern to support bearings and MAXHubs.

You can also use MAXSpline Brackets to mount motion components such as motors and pulleys, as seen below. A MAXPlanetary Gearbox fits perfectly on the 2in hole pattern of the Offset Mount MAXSpline Bracket (REV-21-2351).

MAXSpline Bracket Specifications

• Material: Aluminum 5052

• Weights:

  • MAXSpline Bracket - Stacked: 35g (0.08lbs)

  • MAXSpline Bracket - Offset Mount: 91g (0.20lbs)

  • MAXSpline Bracket - Parallel Top Mount: 49g (0.11lbs)

  • MAXSpline Bracket - MAX Pattern T: 39g (0.09lbs)

Application Examples

MAX Pattern T Brackets

MAX Pattern T Brackets are ideal for creating a perpendicular joint of MAX Pattern MAXTube, as seen in the example below:

Alternatively, the two MAXSpline openings allow for unique gearbox mountings, such as with the MAX 90 Degree Gearbox as shown here:

Parallel Top Mount Bracket

The Parallel Top Mount Bracket can be used to provide support to the end of a shaft that may be cantilevered otherwise:

Offset Mount Bracket

The Offset Mount Bracket is perfect for allowing a motor to be mounted parallel to the axis of a MAXTube:

Stacked Bracket

The extra row of holes on the Stacked Bracket can be used to tile the MAXSpline pattern on a MAXTube in 2D, keeping the holes and the spline on pitch with the mounting tube. The Stacked Bracket is recommended when the goal is to offset a motor from a tube while wanting to remain on pitch with the original tube spline openings.

The Adjustable Tube Mount (REV-21-4016) is a precision machined aluminum bracket designed to give teams fine control over how 2x1 MAXTube attaches to robot structure.

Three center counterbored holes allow a MAXTube Endcap to bolt on flush, creating a clean mounting interface for perpendicular tube assemblies. Elongated, counterbored mounting slots on each side provide precise lateral adjustment, making it easy to correct for off pitch spacing, achieve exact alignment, or tension belts and chain with ease. This combination of rigid support and micro adjustability opens up new possibilities for building accurate, refined robot structures.

Specifications

• Material: 6061 Aluminum

• Finish: Anodized Black

• Thickness: 12.7mm (0.5in)

• Length: 63.5mm (2.5in)

• Width: 25.4mm (1in)

• Counterbored Mounting Holes: 5mm (0.197in) holes on 0.5in grid

• Slot Center to Center: 25.4mm (1in)

• Weight: 66g (0.146lb)

Coming Soon!

The Motor Mounting Clamping Block clamps onto 1x1 or 2x1 tubing, allowing for easy sliding, rotating, and repositioning of motors. Ideal for belt or chain tensioning and precision alignment, it features a MAXSpline bore with an integrated bearing support pocket for stable outboard shaft support without modifying the robot frame.

• Plate Material: Aluminum

• Finish: Black Anodized

ION UltraPlanetary Bracket

The ION UltraPlanetary Face Mount Bracket (REV-21-2046) allows for easy mounting of our UltraPlanetary Gearbox to any of our MAXTube products. The plate features 2 x #10-32 tapped inserts for easy mounting on any structure.

Specifications:

• Material: Glass-Filled Nylon

• Weight: 6g (0.01lb)

MAXSpline Bracket - Motor Mount - Flat

The MAXSpline Bracket - Motor Mount - Flat () facilitates quick mounting of motors or gearboxes with a 2in bolt pattern to MAXTubing or structures. It includes a MAXSpline Bore for accommodating bearings, shaft integration, or other MAXSpline Bore-compatible components.

Specifications:

• Material: 5052 Aluminum

• Thickness: 3mm (0.12in)

• Motor Mounting Holes: #10-32 on 2in bolt circle

The MAXSpline Bracket - Motor Mount - Bent () offers similar functionality to the flat version but features a 90-degree bend on the mounting tabs for versatile positioning. It also includes a MAXSpline Bore for bearing and shaft integration or other compatible components

Specifications:

• Material: 5052 Aluminum

• Thickness: 3mm (0.12in)

• Motor Mounting Holes: #10-32 on 2in bolt circle

The Universal Motor Bracket () is compatible with most motors or gearboxes, allowing rapid attachment to structures. It features 5mm (0.196in) holes on 0.25in pitch horizontal spacing for precise positioning without the risk of plate slippage. This bracket is ideal for quick problem-solving and efficient prototyping systems.

Specifications:

• Material: 6061 Aluminum

• Thickness: 4.76mm (0.188in)

• Length: 108mm (4.252in)

The MAXPlanetary Kraken X44 & Minion Adapter Plate () is designed with counterbored motor mounting holes and #10-32 tapped holes on a 2-inch bolt circle for seamless REV ION compatibility. Its compact footprint ensures a streamlined setup no matter if you are using it as an input for MAXPlanetary or mounting directly to MAX Pattern.

• Material: 6061 Aluminum

• Finish: Black Anodized

• Thickness: 9.5mm (0.374in)

The ION Servo Face Mount Bracket () allows for easy integration of Servo Motors into the ION System. Mount a servo motor, such as our Smart Robot Servo (), on a 1/2in pitch and line up perfectly with the MAXPattern on MAXTube.

The 1in Flat Universal Motor Bracket V2 () changes the holes on the 25mm bolt circle from an M4 to an M3 tight fit hole to accommodate 550 style motors, including the NEO 550 Brushless Motor. To use a BAG Motor, the holes on the 25mm bolt circle need to be drilled out to a M4 tight fit.

Specifications:

• Material: 5052 Aluminum

• Thickness: 3mm (0.12in)

• 0.196in holes on 0.5in grid

• Compatible with the following motors:

The 1in Bent Universal Motor Bracket V2 (REV-21-1842) This bracket is designed to work seamlessly with the most popular motors in FRC. The Bent Universal Motor Bracket V2 changes the holes on the 25mm bolt circle from an M4 to an M3 tight fit hole to accommodate 550 style motors, including the . To use a BAG Motor, the holes on the 25mm bolt circle need to be drilled out to a M4 tight fit.

Structure brackets are designed to secure pieces of structure together at varying angles. There are different hole patterns available to accommodate the different extrusion types and patterns. In the REV ION Build System, structure brackets are any bracket that does not have a MAXSpline Bore.

1in Corner Brackets

1in Inside Corner Bracket (REV-21-1203) is designed to enable more construction strategies with the REV 1in Extrusion. Designed for #10 hardware, the mounting holes are on a 1in pitch that allows for the creation of complex joints by stacking with other REV 1" Brackets.

1in Basic Corner Bracket (REV-21-3293) is a compact, low-profile solution for strengthening MAXTube joints or adding simple mounting points where space is limited. Each 2in leg includes three #10 clearance holes on a 1/2in pitch, and the clearance holes in the radiused bend offer screw head clearance. The 1in width aligns cleanly with 1x1 MAXTube and integrates seamlessly into the REV ION System.

1in Angled Corner Bracket (REV-21-3291) is a compact, heavy duty solution for reinforcing MAXTube joints and building rigid structures in tight spaces. Its 5mm thick aluminum body provides consistent strength, while the integrated angle dramatically boosts joint stiffness by resisting torsion and bending loads. Each end of the bracket includes two #10 clearance holes on a 1/2in pitch, giving teams flexible mounting options for corner reinforcement or general structure assembly. At only 1in wide, it nests cleanly alongside 1x1 MAXTube and fits easily into dense robot designs.

Create a sturdy triangle with our 3-4-5 Brackets to support your robot. When using 3-4-5 Brackets any 3 lengths of tube that make a 3-4-5 triangle will allow the holes to line up with the brackets and for the holes to stay on pitch relative to one another.

The 3-4-5 Brackets come in both external and internal versions. Both brackets form the same structure of a 3-4-5 triangle; it is just secured in different places.

1in BracketsThis is an assortment of Brackets that are all 1in wide and feature #10 clearance holes on a 1/2in pitch. Using these brackets with any of our MAXTube or Extrusion allows for easy construction of robot frames, mechanisms, and structure.