4" OD x 3.5" ID x .25" X-Contact Bearing

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

The Thrifty Clamping Bearing Block provides teams a quick and easy way to capture 1.125" OD flanged bearings when mounting to 2" x 1" or 1" x 1" box extrusion. Simply drill a pass thru clearance hole and insert the bearing which is then trapped against the extrusion wall's material.

Features include -

• Clamps around 2" x 1" or 1" x 1" extrusions
• Two counterbored 10-32 holes 2" apart allow for mounting of planetary gearboxes or 2" bolt circle motors
• #8 holes on a 1.875" diameter bolt circle allow for usability in existing FRC applications
• 6061 Aluminum material anodized black

Kit includes:

- Two black anodized plates

- Four 10-32 1.5" long button head bolts

- Two 10-32 0.50" long bolts

Bearings are NOT included with this kit

Mount all the things with this latest offering from The Thrifty Bot! Finally a plate that can interface with just about any common motor or planetary gearbox in the FIRST Robotics Competition. This 4mm thick 6061 aluminum black anodized plate includes bolt mounting patterns for the following motors and planetary gearboxes:

- REV Ultraplanetary Gearbox

- REV NEO 550 & Banebots 550 Brushed motors

- VEX Versaplanetary and Versaplanetary Lite gearboxes

- AndyMark 57 Sport planetary gearboxes

- 775 series brushed motors

- REV NEO & Falcon 500 brushless motors

- Traditional Mini-CIM & CIM motors

- 4mm thick (.157") allows for stronger cantilevered applications

- 1/4" hole to hole spacing, 1/2" spacing between hole rows. Holes are .164" natively supporting #8 bolts or 5/32 rivets. Holes can be drilled out to support #10 hardware.

1 plate weight: .079 lbs

STEP CAD file available

Layout Drawing available

This 8 pack of 2.5mm thick T gussets can be used to assemble frames or other mechanisms commonly used in competitive robotics.

• 3.50 in. x 3.25 in. with 1 inch wide ends
• .163" holes spaced 1/2 an inch apart, perfect for 5/32 rivets
• 2.5mm (0.098 in.) thick, made from 6061-T6 aluminum
• .055 lbs per L gusset
• Sold in 8 packs

CAD model available

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

Don't see what you need?

The original vectored intake wheel, now with even more options. This wheel design was battle tested and match proven on many FRC robots during the 2020 season. These wheels help with redirecting game objects while imparting lateral force, helping to move game pieces either left or right in the direction you desire.

This 8 pack of 2.5mm thick L gussets can be used to assemble frames or other mechanisms commonly used in competitive robotics.

• 2.75 in. x 2.75 in. with 1 inch wide ends
• .163" holes spaced 1/2 an inch apart, perfect for 5/32 rivets
• 2.5mm (0.098 in.) thick, made from 6061-T6 aluminum
• .04 lbs per L gusset
• Sold in 8 packs

CAD model available

The Thrifty Clamping Bushing Block provides teams a quick and easy way to capture Thrifty Bushings when mounting to 1" x 1" extrusion. Simply drill a pass thru clearance hole and insert the Thrifty Bushing which is then trapped against the extrusion wall's material.

• Kit includes:

- Two black anodized plates

- Four 8-32 1.5" long bolts

- Two Thrifty Bushings

STEP CAD Model Available

6061 aluminum anodized black

Weights:

- One clamping plate: 0.018 lbs (.293 oz)

- Full assembly with 2 thrifty bushings and 4 bolts: 0.072 lbs (1.145 oz)

This turnbuckle chain tensioner integrates directly with #25 chain. Using a chain tool, the custom 1/4-20 link bolts replace a chain link and have the pin pushed back through it to become part of the chain. Then simply twist the center coupler to tighten or loosen the chain and tighten the jam nuts once your chain tension is perfect.

All parts are made of steel including the coupler and the custom chain link bolts are 1/4-20 thread for increased strength. One link bolt is left hand threaded and the other is right hand threaded, so take care not to mix them up if purchasing multiple sets.

Material: Steel, all of it.

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 axle creates a very effective roller that ignores variations in the objects being driven. This makes for high-performance intakes and internal conveyors.

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), blue (50A), and black (60A) 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. 

Please note maroon wheels are only intended for use in FTC. If more powerful motors are used to drive it the spokes may fail.

Specifications

• Bore: 1/2 in. Hex, 3/8 in. Hex, Nub Bore, 5 mm Hex
• Diameter: 4 in.
• Durometer: 35A (Green), ⠀40A (Orange), ⠀45A (Maroon), ⠀50A (Blue), ⠀60A (Black), ⠀80A (Gray)
• Hole Pattern: Qty 4 3.5 mm Holes on a 16 mm Circle for 8 mm bore wheels
• Material: TPU, ⠀Polycarbonate
• Maximum RPM: 3000-9000
• Weight: 0.228 - 0.269 Lbs
• Width: 1 in.

Documents

Layout Print(s)

am-3562 4IN 375Hex Compliant Wheel REV3.PDF

am-3563 4IN 8mm Compliant Wheel REV4.PDF

am-3480 4IN 500Hex Compliant Wheel REV3.PDF

am-4538 4IN 5mm Hex Compliant Wheel.PDF

CAD File(s)

am-3562 4IN 375Hex Bore Compliant Wheel REV2.STEP

am-3563 4IN 8mm Round Compliant Wheel REV2.STEP

am-3480 4IN 500Hex Bore Compliant Wheel REV2.STEP

am-4538 4IN 5mm Hex Compliant Wheel.STEP

Guide(s)

4 inch Compliant Wheel Expansion.pdf