Thrifty Absolute Magnetic Encoder CTRE Mounting (SDS Compatible)

Specifications:

• Material: Steel
• Coating: Zinc plated
• Thread: 1/4-20
• Length: 1/2"
• Head: Button Head Cap Screw

This product includes two 1.25 inch long half inch hex couplers. This product has been verified to clamp all the various standards of 1/2" hex, rounded hex and AM churro with significant clamping force.

• 1.25" long overall - shortest hex coupler on the market.
• Split half design allows you to easily remove or add the coupler back on - great for mechanisms that might require maintenance or replacement.
• Each coupler includes four 3/8" long 6-32 threaded black oxide steel bolts. These bolts use a 7/64" driver to prevent easily stripping the bolt heads out.
• .1 ounces or .0625 pounds, black anodized 6061 aluminum.

Affordable and durable 2 inch squish wheels are now available. These wheels are commonly used by competitive robotics teams to move game pieces throughout their robot.

These wheels ship in packs of 10 for $3 per wheel and feature:

• 30A durometer TPE rubber material for maximum squishability
• .375 inch hex hole, intended to be stretched and used on 1/2 inch hex shafts or other larger OD tubes. Each wheel is 1/2 inch thick.
• Weight: .038 lbs per wheel
• STEP CAD file available

Tired of hex clamp collars that cost an arm and a leg? Tired of stripping out the set screw on your clamp collar? Need to add a collar in an assembly and don't want to remove everything from your hex shaft?

Me too! I've ran into all of the above scenarios multiple times building multiple robots. These collars are the holy grail -

• split so they can easily be added or removed
• lightweight 6061 aluminum
• .5 oz (.031 lbs) for one hex collar
• uses two 8-32 socket head cap screws that require a 9/64" allen wrench
• $4.00 per collar, sold in 5 packs
• anodized black for awesomeness

General Dimensions:

• When clamped on 1/2 inch hex shaft - approx 1.2 inch outer diameter
• 0.40 inches wide
• STEP file CAD Model Available

Half inch hex hubs are often used to transfer motion between components in competition robots. This hub includes a thicker quarter inch flange that allows for tapping 10-24 / 10-32 holes or drilling and tapping to 1/4-20 sized holes. The Thrifty Hub is offered as a blank hex hub to teams to do further machining or leave stock as-is.

Use this 1 inch long adapter to directly drive 1/2" hex products from a spline shaft motor. Sold in packs of 4.

Includes rounded edges allowing it to interface with 13.75mm ID bearings or 1/2" ID hex bearings.

Made from 4140 Steel.

Weight: .041 lbs

STEP CAD File Available

Affordable and durable 4 inch squish wheels are now available. These wheels are commonly used by competitive robotics teams to move game pieces throughout their robot.

These wheels ship in packs of 4 for $7.50 per wheel and feature -

• 30A durometer TPE rubber material for maximum squishability
• Molded over polycarbonate half inch hex center to ensure the center of the wheel does not strip out over time.
• 1 inch thick. Good for applications running 1500-3000 RPM. Not good for direct driving in flywheel higher RPM applications.
• Weight: .21 lbs or 3.4 oz per wheel
• STEP CAD file available

The Thrifty Bushing is a nylon bushing that works with 13.75 mm diameter style hex shaft. This bushing is recommended for low-load applications and will allow you to package mechanisms into even smaller form factors. Thriftybot recommends greasing bushings prior to use.

Compliant wheels are not intended for moving robots, but moving objects. Compliant wheels give way to allow rigid objects to be manipulated easily. A line of multiple wheels on a driven hex shaft creates a very effective roller that ignores variations in the objects being driven. This makes for high-performance intakes and internal conveyors. The wheels are sized for an interference fit and tend to stay in place on a shaft, though a shaft collar may be used to make absolutely sure the wheels stay clear of other mechanisms or maintain consistent spacing.

The hex bore versions of this wheel are undersized, and are intended to be an interference fit on their respective hex shafts. This interference fit allows for effective torque transfer from the hex shaft to the wheel, as well as allowing the wheel to remain in place along the shaft without the need for spacers or collar clamps:

Different durometer ratings give each wheel unique characteristics. Green wheels (35A durometer) are the softest and most compliant around objects, while orange (40A), maroon (45A), and blue (50A) wheels are increasingly firm. The increased firmness also allows the latter wheels to carry a higher RPM rating. Check out the downloads tab for a chart showing wheels and their maximum RPM. 

Specifications

• Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore
• Diameter: 2 in.
• Durometer: 35A (Green), ⠀40A (Orange), ⠀45A (Maroon), ⠀50A (Blue), 60A (Black)
• Hole Pattern: Qty 2 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
• Material: TPU
• Maximum RPM: 6000 - 9000
• Weight: 0.035 lb.
• Width: 0.5 in.

Documents

Layout Print(s)

am-3571 2IN 375 Hex Compliant Wheel REV3.PDF

am-3462 2IN 500Hex Compliant Wheel REV3.PDF

am-3572 2IN 8mm Compliant Wheel REV4.PDF

CAD File(s)

am-3571 2IN 375Hex Compliant Wheel REV2.STEP

am-3572 2IN 8mm Compliant Wheel REV2.STEP

am-3462 2IN Molded 500Hex Compliant Wheel REV2.STEP

Additional File(s)

2 inch Compliant Wheel Expansion.pdf

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