Motion

REV DUO Motion Motors provide the rotational power. Gears, sprockets, and wheels transmit and transform that power. Bearings reduce the friction along the way. A useful motion system is many of these parts working together.

5mm Hex Shaft

The core to transmitting motion in the REV DUO build system is the 5mm hex. This hex is incorporated into the other motion components, such as: sprockets, gears, wheels, and shafts.

REV DUO 5mm hex shaft

Three Ways To Transmit Motion

Sprockets and chain, gears, and belt and pulleys compared

Sprockets & Chain

Transmit torque across distances with flexible lengths.

Gears

Good in compact spaces and for changing the direction of rotation.

Belt & Pulleys

Efficient at transmitting motion at high speeds for fixed lengths.

Want an introduction to motion?

Detailed documentation plus building tips & tricks are located on our documentation space.

REV DUO Technical Resources

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  • UltraPlanetary Hardware Pack

    UltraPlanetary Hardware Pack

    REV-41-1609
    $7.75
    This is all of the hardware included in the UltraPlanetary Gearbox Kit & HD Hex Motor (REV-41-1600) Kit Contents QTY 6 - M3x40mm QTY 6 - M3x30mm QTY 6 - M3x20mm QTY 6 - M3x10mm QTY 2 - M3x8mm Button...
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  • UltraPlanetary Cartridge - 5:1

    UltraPlanetary Cartridge - 5:1

    REV-41-1603
    $12.50
    This 5:1 cartridge is a pre-assembled, lubricated stage for the UltraPlanetary System. The UltraPlanetary System is a cartridge based modular gearbox designed to handle the rigors of the competition...
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    $12.50
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  • UltraPlanetary Cartridge - 4:1

    UltraPlanetary Cartridge - 4:1

    REV-41-1602
    $12.50
    This 4:1 cartridge is a pre-assembled, lubricated stage for the UltraPlanetary System. The UltraPlanetary System is a cartridge based modular gearbox designed to handle the rigors of the competition...
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  • UltraPlanetary Cartridge - 3:1

    UltraPlanetary Cartridge - 3:1

    REV-41-1601
    $12.50
    This 3:1 cartridge is a pre-assembled, lubricated stage for the UltraPlanetary System. The UltraPlanetary System is a cartridge based modular gearbox designed to handle the rigors of the competition...
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    $12.50
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  • DUO Mecanum Wheel Set

    DUO Mecanum Wheel Set

    REV-45-1655
    $160.00
    Tested for the rigors of competition, DUO Mecanum Wheels are steel plates with rollers supported by ball bearings allowing for the perfect combination of wheel rigidity and roller movement. Included...
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    $160.00
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  • 70 Tooth Metal Gear

    70 Tooth Metal Gear

    REV-41-1662
    $12.50
    $10.63
    Metal gears designed to work with REV 5mm hex shafts in high-load applications. REV metal gears are NOT compatible with REV plastic gears. All REV metal gears are narrower than plastic gears,...
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    $12.50
    $10.63
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  • 42 Tooth Metal Gear

    42 Tooth Metal Gear

    REV-41-1664
    $10.00
    $8.50
    Metal gears designed to work with REV 5mm hex shafts in high-load applications. REV metal gears are NOT compatible with REV plastic gears. All REV metal gears are narrower than plastic gears,...
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    $10.00
    $8.50
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  • 15mm Hinge Kit

    15mm Hinge Kit

    REV-45-1259
    $12.50
    Custom hinge system used to create compact, simple hinges using REV DUO 15mm Extrusion. Hinges come in left, right, and center pieces, and are attached together using standard M3 hardware...
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  • 15mm Linear Motion Kit V2

    15mm Linear Motion Kit V2

    REV-45-1507
    $14.75
    Updated version of our popular Linear Motion Kit. This kit has been redesigned to be even easier for teams to use with REV 15mm Extrusion to create compact linear slides. New additions to the kit...
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  • #25 Chain Tool

    #25 Chain Tool

    REV-42-1442
    $37.50
    A custom-designed tool that allows teams to easily break and re-assemble #25 chain. The mandrel is used to push out the chain pin. If using connecting links, the pin can be completely removed, but...
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    $37.50
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  • 20:1 Hex Gearbox & Pinion

    20:1 Hex Gearbox & Pinion

    REV-41-1064
    $17.00
    $14.45
    This gearbox is the same one used on our HD Hex Motor 20:1 Spur Gearbox featuring our 5mm HEX output shaft! This gearbox can be installed on any 550 series motors (like the NeveRest motors from...
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    $17.00
    $14.45
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  • Barb for Polyurethane Hollow Belt - 8 Pack

    Barb for Polyurethane Hollow Belt - 8 Pack

    REV-41-1165-PK8
    $8.25
    Use these barbs with our Polyurethane Hollow Belt to join the ends and make custom length belts quickly and easily.  CAD & Drawings REV-41-1165 Drawing
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  • Polyurethane Round Belt - 6mm - 6ft

    Polyurethane Round Belt - 6mm - 6ft

    REV-41-1164
    $9.25
    Our Polyurethane Hollow Round Belting is perfect for your conveyor, and intake mechanisms. Use Barbs to assemble custom length belts. 
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    $9.25
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  • Surgical Tubing - 3mm

    Surgical Tubing - 3mm

    REV-41-1163
    $7.75
    This stretchy latex rubber tubing is sized to fit through any of the M3 holes in DUO brackets, wheels, gears or other motion products. String tubing between outside holes on two wheels to create a...
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    $7.75
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  • Servo Power Module

    Servo Power Module

    REV-11-1144
    $57.50
    $48.88
    The Servo Power Module is a 6V 90W power injector that enables the use of high-power RC servos in applications where a robot controller cannot directly provide adequate power.  The Servo Power Unit...
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    $57.50
    $48.88
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  • 40:1 Hex Gearbox & Pinion

    40:1 Hex Gearbox & Pinion

    REV-41-1065
    $17.00
    $14.45
    This gearbox is the same one used on our HD Hex Motor 40:1 Spur Gearbox featuring our 5mm HEX output shaft! This gearbox can be installed on any 550 series motors (like the NeveRest motors from...
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    $17.00
    $14.45
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  • Small Pulley Bearings - 10 Pack

    Small Pulley Bearings - 10 Pack

    REV-41-1368-PK10
    $13.50
    These v-groove bearing pulleys fit on an M3 x 16mm Hex Cap Screw and can be mounted directly onto extrusion. Use with 15mm Linear Motion Kits and a high tensile strength no-stretch string, such as...
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    $13.50
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  • #25 Roller Chain - 10 ft

    #25 Roller Chain - 10 ft

    REV-41-1365
    $19.00
    This #25 roller chain is designed for use with #25 sprockets. Each package includes 1 connecting link, and additional links are available separately in the #25 Connecting Links – 5 Pack. For custom...
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    $19.00
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  • #25 Connecting Links - 5 Pack

    #25 Connecting Links - 5 Pack

    REV-41-1366-PK5
    $6.00
    Connecting link for #25 chain. Use a connecting link to connect two ends of chain to create a loop. Specifications Material: Steel Size: #25 Pitch: 0.25in CAD & Drawings REV-41-1366
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    $6.00
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  • Servo Gear Adapter - 4 Pack

    Servo Gear Adapter - 4 Pack

    REV-41-1364-PK4
    $6.00
    This Servo Gear Adapter is a 15 Tooth Plastic Gear that attaches to any 25T output servo including the Smart Robot Servo. Warning: Gears from other building systems may have a very similar tooth...
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    $6.00
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