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  • REV DUO
  • Structure
    • Introduction to Structure
      • 15mm Extrusion
      • 15mm x 30mm Extrusion
      • 15mm x 45mm C Channel
      • 45mm x 45mm U Channel
      • Flat Plate
      • Flat Beam
      • L Beam
    • Brackets
    • Corrugated Plastic Sheets
    • M3 Hardware
  • Motion
    • Introduction to Motion
      • Hex Shaft and Spacers
      • Bearings
    • Sprockets and Chain
      • Advanced Sprockets and Chain
      • Chain Tool
    • Timing Belts and Pulleys
    • Gears
      • Advanced Gears
    • Wheels
    • Linear Motion
    • Choosing an Actuator
    • Motors
      • HD Hex Motor
        • Pinion Pressing Guide
        • Pinion Removal Guide
      • Core Hex Motor
    • Servos
      • Smart Robot Servo
  • Building Techniques
    • Tips and Tricks for Building
    • Supporting Motion
    • Constraining Motion
    • Compatibility
  • Build Guides
  • Linear Motion Kit
    • Three Stage Cascading Lift
    • Three Stage Continuous Lift
  • Channel Drivetrain
    • Single Sprocket Shaft Assembly
    • Double Sprocket Shaft Assembly
    • Drive Shaft Assembly
    • UltraPlanetary Gearbox Assembly
    • Making the Chain Links
    • Drive Rail Assembly
    • Final Assembly
  • Channel Drivetrain - Mecanum Upgrade
    • 90mm Single Sprocket Shaft Assembly
    • 75mm Single Sprocket Shaft Assembly
    • Drive Shaft Assembly
    • UltraPlanetary Gearbox Assembly
    • Making the Chain Links
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behaviour
  • Mecanum Drivetrain V2
    • UltraPlanetary Gearbox Assembly
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behavior
    • Mecanum Drivetrain Example Code
  • Mecanum Drivetrain Kit
    • UltraPlanetary Gearbox Assembly
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behavior
    • Mecanum Drivetrain Example Code
  • Extrusion Chain Drivetrain
    • Pre-Loading Brackets
    • Traction Wheel Assembly
    • Omni Wheel Assembly
    • UltraPlanetary Gearbox Assembly
    • Internal Chassis Frame Assembly
    • Making the Chain Links
    • Final Assembly
  • Extrusion Gear Drivetrain
    • Pre-Loading Brackets
    • Omni Wheel Assembly
    • Middle Grip Wheel Assembly
    • Front Grip Wheel Assembly
    • Gear Idler Assembly
    • UltraPlanetary Gearbox Assembly
    • Internal Chassis Frame Assembly
    • Final Assembly
  • Class Bot V2
    • Pre-Loading Brackets
    • Internal Robot Frame Assembly
    • External Robot Frame Assembly
    • Wheel Assemblies
    • Arm Gear Assemblies
    • Arm Assemblies
    • Final Assembly
  • Class Bot
    • Pre-Loading Brackets
    • Internal Robot Frame Assembly
    • External Robot Frame Assembly
    • Wheel Assemblies
    • Arm Gear Assemblies
    • Arm Assemblies
    • Final Assembly
  • Electronics and Communication
    • REV Control System
    • Sensors
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On this page
  • Bracket Basics
  • Key Terms
  • Plastic Brackets VS Metal Brackets
  • Actuator Brackets
  • Bracket Use Cases
  • Variable Angle Bracket
  • Indexable Motion Bracket

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  1. Structure

Brackets

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Last updated 6 months ago

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Bracket Basics

There are many classifications that brackets could fall into but in the REV DUO Build System there are two major groupings of brackets: motion and construction. The major distinguishing feature of motion brackets is a 9mm bearing seat to support . Construction brackets are essentially any bracket in the REV DUO Build System that does not have a bearing seat. Because the term construction bracket encompasses a broad range of REV 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 to elements. Actuator brackets on the other hand are intended to mount and support motors and servos.

Another key point of bracket distinction in the REV DUO Build System is that there are both and brackets available. Many of the brackets, like the 15mm 90 Degree Bracket ()(), come in a metal and a plastic version. Though there is some overlap between the metal and plastic brackets, there are also key differences between the two type of brackets.

Follow through the rest of this section to learn more about brackets.

Key Terms

Alignment Ribs: Protrusions on one side of the bracket seat into the extrusion channel to help align the bracket to the extrusion and add strength and rigidity to joints.

Extrusion Mounting Holes: M3 Mounting holes on an 8mm pitch.

Bearing Seat: Brackets with a 9mm hole can be used to mate with any of the plastic bearings to support a shaft.

Motion Interface Mounting Pattern: Circular M3 hole pattern on a 16mm diameter is used to mount to REV Robotics shaft accessories.

As bracket use cases vary, so do the elements of the brackets. Generally speaking, all brackets have an 8mm pitch, but not all brackets have the Motion Pattern.

Plastic Brackets VS Metal Brackets

Plastic Brackets

Metal Brackets

Thickness

3mm

2mm

Alignment Ribs

Yes

No

Material

Nylon (PA66)

Aluminum Alloy

Actuator Brackets

Bracket Use Cases

Variable Angle Bracket

Indexable Motion Bracket

The image and definitions in the introduction above use the 15mm Motion Bracket (), which is a plastic bracket, as an example. The table below outlines the basic differences between the plastic and metal brackets.

The actuator brackets all have an 8mm pitch for mounting to or . The interface pattern changes depending on the specific use case bracket. For instance, the Metal Bent HD Hex Motor Bracket () has a different interface than the Metal Bent Planetary Motor Bracket ().

Most of the actuator mounting brackets are metal brackets, with no plastic alternative. In the REV 15mm Build System there is a Plastic Servo Bracket () in addition to the metal servo brackets.

It is also important to note that the Core Hex Motor () has the Motion Interface Pattern and can be mounted to any bracket with the Motion Pattern.

The Variable Angle Bracket () is a special kind of construction bracket which allows 2 pieces of extrusion to be mounted together at any angle from 0-180°. For additional strength, after the ideal angle has been set, miter the end of the extrusion with that angle. Attached the extrusion to the bracket through to arc and center hole. Then drill a hole along the alignment mark arc so that it lines up with the extrusion slot and add another bolt to fix the angle.

The Indexable Motion Bracket () is a specialized version of the Motion Bracket. This bracket is made up of two pieces: the smaller piece has alignment ribs and fits onto the extrusion, while the larger piece has a motion interface pattern and a bearing seat. On the inside face, where these brackets meet is a fine sawtooth pattern which mesh when they are bolted together to hold the shaft offset. To adjust the offset, loosen the screws and adjust as needed. Tighten the screws to fully engage the teeth to secure the bracket.

REV-41-1303
Extrusion
Channel
REV-41-1487
REV-41-1563
REV-41-1319
REV-41-1300
REV-41-1318
REV-41-1313
Hex Shafts and Bearings
Extrusion
Channel
metal
plastic
REV-41-1480
REV-41-1305