This is the strong polycarbonate plastic hub for a 6-inch Pneumatic Wheel. The hub accepts any 6 x 1 1/4 tire and inner tube, 1.125 in. (outside diameter) ball bearings (2 per wheel are needed), and the mounting holes needed to install hardware to be sprocket-driven or hub-driven. This product is shipped in kit form.

This is the inner tube that fits inside of our six-inch tire (am-2474) to create a six-inch pneumatic wheel, perfect for robot drive trains.

Specifications

• Material: Rubber
• Size: Fits within a 150 x 50mm tire
• Valve Stem: 45 Degree
• Weight: 0.3 lbs

Here is a six-inch version of the high-traction wheel kit you know and love which includes a grippy rubber tire, a pneumatic inner tube, and a strong plastic hub. These parts are shipped to you in kit form. The unique aspect about this product is the competition-ready hub. The hub accepts any 150x50mm tire and inner tube, 1.125 in. (outside diameter) ball bearings (2 per wheel are needed), and the mounting holes needed to install hardware to be sprocket-driven or hub-driven. This wheel ships as a separate tire, inner tube, and hub halves. Assembly is required.

Important Notes:

• Tube pinching: When assembling the tube within the two hub halves, be careful not to pinch the tube rubber between the plastic hub halves. If assembled with the tube pinched between the hub halves, the tube may puncture and leak.

RPM Rating and notes:

These wheels are designed to be propulsion wheels for driving a robot or wheel chair. The design intent is to be contacting the ground, being driven by a gearbox at a maximum speed of approximately 500 rpm (which results in approximately 13 feet/sec).

Within some applications, this wheel has been used as a shooter of objects, spinning at a very high rpm. For these applications, a higher rpm shows that the wheel may wobble, since the valve stem is mounted off to one side of the center of the wheel hub. We have seen properly balanced wheels, using securely mounted hardware (longer screws, washers) that can handle 5,000 rpm. When spinning this wheel at speeds up to 5,000 rpm, please take proper safety precautions.


Included Hardware:

• Tire for 6 Inch Pneumatic Wheel (Metric Size 150x50mm), am-2474
• Inner Tube for 6 Inch Pneumatic Wheel, with 45 Degree Stem (for 150x50mm Tire), am-2475
• Hub Assembly for 6 inch Pneumatic Wheel, which includes two (2) black plastic hub halves and six (6) 4-40 x1 Pan Head Phillips thread rolling screws

NOT Included Hardware:

• Bearings
• #10 Screws and Nuts Needed to Mount a Hub (2 Inch Long Screws are Needed) or a Sprocket (2.25 Inch Long Screws are Needed)
• Aluminum Hub, if driven by a shaft

Wheel Structure:

The hub halves are held together with the #4-40 screws. This wheel can accept #10-32 screws for mounting sprockets or hubs, but these are NOT included since different length screws are needed to mount hubs or sprockets. These #10 screws can be mounted to the included 1.875 inch diameter bolt circle. The hub halves need to be assembled together so that the valve stem clearance holes line up. Locating features are present for easy alignment.

Assembly: 

This is a helpful step by step guide on how to assemble the wheel, it can be a bit tricky. 

Usage:

With Axle and Hub:

• In order to drive this wheel with a hub, use six (6) #10-32x2.25 screws (am-1156) and six (6) #10-32 nylock nuts (am-1042).

With Sprocket:

• In order to drive this wheel with a plate sprocket, use six (6) #10-32x2.25 screws (am-1156) and six (6) #10-32 nylock nuts (am-1042).
• Two (2) bearings are needed for this wheel when being driven by a sprocket. Use bearings with a 1.125 inch outer diameter. No flange is needed on either of the bearings.

Use as a caster:

• If you want to let this wheel spin without being driven, you will need to install two (2) bearings with 1.125 inch outer diameter.

Specifications

• Bolt Pattern: 6 holes, 0.20 diameter on 1.875 in. diameter bolt circle
• Bore: 0.960 in. thru hole, with 1.125 in. x 0.375 in. deep bearing pockets
• Diameter: 6.00 in.
• Load Capacity: 120 lbs
• Material: black polycarbonate, gray rubber
• Maximum Pressure: 35 psi
• Tread Width: 1.39 in.
• Valve Stem: The valve stem may stick out up to 0.25 in. from the hub
• Weight: 0.71
• Width Across Middle: 2.190 in.

Documents

Layout Print(s)

am-4189 6in pneumatic wheel.PDF

CAD File(s)

am-4189 6in pneumatic wheel.STEP

This rubber tire is a great option for robot drive systems that need some flex or squish. Much like its eight-inch friend (am-0970), this tire is paired with a Hub (am-2469) and Inner Tube (am-2475) to make a full Pneumatic Wheel (am-4189). This tire has loads of grip and is a good drop-in replacement where you would put any other six-inch diameter wheel.

Specifications

• Diameter: 6 in.
• Material: Rubber
• Weight: 0.26 lb.
• Width: 1.25 in.

Documents

Layout Print(s)

am-2474 6in pneumatic tire.PDF

CAD File(s)

am-2474 6in pneumatic tire.STEP

The 6" Performance Wheel is a competition-proven design used by many top teams over the years. This wheel design incorporates a novel way of attaching tread, and also allows for sprockets to be mounted on both sides of the wheel. This wheel DOES NOT include tread material, which is available separately to tailor this wheel's performance to your application. Two 1.125" OD bearings, available separately, allow this wheel to ride smoothly on a dead (stationary) axle of your choosing.

For tread mounting instructions, click here!

Specifications:

• Material: 6061 aluminum, machined from billet
• Diameter: 5.60 inches, without tread (6.0 inches with tread, not included)
• Weight: 0.57 pound
• Uses 1" wide treads
• Bore: 0.95" with 1.1245" id x 0.250" deep on either side
• Load Capacity: 500 pounds*
• Tread Mounting Holes: 6 threaded thru holes for #10-32 screw on a 1.875" dia bolt circle

* Load Testing: we applied 700 pounds on the location of the opening for the treads, and had no rim deflection.

Usage: 
With Sprocket:

One sprocket on one side: To drive this wheel with a sprocket, (or to drive another wheel with propulsion from this wheel) then the sprocket needs to be attached to the side of the wheel, outside of a 250 Sprocket Spacer. Use Hardware Kit 3, which includes the screws for this.

• Two sprockets, one on each side: One side of the wheel has no recess, so that side will only need a 250 Sprocket Spacer to space the sprocket out from the wheel. In order to put a sprocket on the other side, use a 550 Sprocket Spacer to get the sprocket out far enough so that the chain clears the edge of the wheel.

With Bearing:

• Press a ball bearing into this wheel for a free spinning wheel or for use with a sprocket.. The ball bearing must have a 1.125" od. For a 1/2" id, use am-0030. For a 3/8" id, use am-0573.

With Axle and Hub:

• This wheel can be driven by a an axle, if an AndyMark hub is attached to the wheel. Hubs are NOT included in the price of the wheel. If this is your choice, then no bearing is needed. To install a hub onto a 6" Performance Wheel, use Hardware Kit 3.

Plaction wheels are a lightweight wheel made of strong molded polycarbonate. This six inch diameter wheel has high traction blue nitrile roughtop tread. High performance plastic and high traction, Plaction.

Specifications: 

• Diameter: 6 inches
• Width: 1.00 inch
• Width at Hub: 1.54 inches
• Bore: 1.124 inch bore, 0.25 inches deep on either side
• Bolt Pattern: 12 Holes around a 1.875" diameter circle, every other hole is sunken
• Body Material: Black Polycarbonate
• Load Capacity: 150 pounds (estimated)
• Weight: 0.84 pounds
• Tread Capture: 0.9 inch wide (clamps tread)
• Tread Width: 1 inch
• Tread Type: Roughtop Conveyor Belting
• Coefficient of Friction on HDPE: 0.488
• Coefficient of Friction on tight-pile carpet: 1.19

Included Hardware:

• Two - 6" Plaction Wheel Halves
• Six - Individual #10-32x1" SHCS
• Six - Individual #10-32 Nylock Nuts
• One - 6" Wheel Roughtop Tread
• Two - Individual Alligator Clips
• One- Individual Alligator Clip Pins

Usage: 

There are two ways to drive this wheel. One way is with a Axle and Hub, and the other is with a Sprocket. To install a sprocket or hub onto a Plaction wheel, use 10-32 x 1.75" socket head screw (qty. 3 or 6), and 10-32 nylock nuts. To use one sprocket on each side of a Plaction wheel (2 sprockets total) use 10-32 x 2.5" screws(3 or 6) and 10-32 nylock nuts. 

With Axle and Hub:

• If you wish to drive this wheel with an Axle and Hub, you can pick your hub by fitting any of the AndyMark hubs (except the Small DD Globe Hub) to this wheel. Hubs are NOT included in the price of the wheel. If this is your choice, then no bearing is needed.

With Sprocket:

• If you wish to drive this wheel with a sprocket, then the sprocket needs to be attached to the side of the wheel, and two ball bearings need to be pressed into the wheel (one on each side). The smallest sprocket that will work with these wheels is a S35-24 tooth and a S25-36 tooth sprocket.

With Bearing:

• If your design needs this wheel to spin on a stationary axle (and possibly be driven by a sprocket), you will need 2 bearings with a 1.125" od pressed into this wheel. Use am-0029 for a 1/2" bore and am-0209 for a 3/8" bore. One bearing is pressed into each side of the wheel. Bearings are NOT included in the price of this wheel.

With Tread:

• This wheel is designed to capture 1" wide conveyor belt tread (Roughtop or Wedgetop) between 2 wheel halves. The 6 perimeter screws can be loosened by 1/8 inch to install the desired tread. We recommend using Alligator Clips to hold the tread together on the wheel. One 6" Wheel Roughtop Tread is included in the price of the wheel.

For a Wider Wheel: 

This wheel is designed so that a 5" PVC schedule 40 pipe can be inserted between the two wheel halves, and a wider wheel can be created (additional tread may be needed).

This pneumatic wheel offers a significant hub strength improvement over our popular plastic-hubbed 8in. Pneumatic Wheel. This variant of this strong wheel features a 1/2 hex bore, which is a perfect choice for building a WCD style drivetrain, or any live 1/2 hex axle style drive configuration. The hub of the wheel is comprised of a machined aluminum core, with two flat machined plates bolted to it to retain the tube and tire. This product is great for both FRC drivetrain applications, or non-FIRST outdoor applications as well. 

Specifications

• Bolt Pattern: 1.875 in. Circle
• Bore: 0.50 in. Hex
• Diameter: 7.6 in.
• Load Capacity: _____
• Weight: 1.43 lbs

Documents

CAD File(s)

am-3936 Aluminum 8IN Pneumatic 500IN Hex Bore Wheel.STEP

Layout Print(s)

am-3936 8IN HD Pneumatic 500IN Hex Bore Wheel.PDF

Plaction wheels are a lightweight wheel made of strong molded polycarbonate. This eight inch diameter wheel has high traction blue nitrile roughtop tread. High performance plastic and high traction, Plaction.

Specifications: 

• Diameter: 8 inches
• Width: 1.00 inch
• Width at Hub: 1.54 inches
• Bore: 1.124 inch bore, 0.25 inches deep on either side
• Bolt Pattern: 6 Holes around a 1.875" diameter circle
• Body Material: Black Polycarbonate
• Load Capacity: 150 pounds (estimated)
• Weight: 0.92 pounds
• Tread Capture: 0.9 inch wide (clamps tread)
• Tread Width: 1 inch
• Tread Type: Roughtop Conveyor Belting
• Coefficient of Friction on HDPE: 0.488
• Coefficient of Friction on tight-pile carpet: 1.19

Included Hardware:

• Two - 8" Plaction Wheel Halves
• Six - Individual #10-32x1" SHCS
• Six - Individual #10-32 Nylock Nuts
• One - 8" Wheel Roughtop Tread
• Two - Individual Alligator Clips
• One- Individual Alligator Clip Pins

Usage: 

• There are two ways to drive this wheel. One way is with a Axle and Hub, and the other is with a Sprocket. To install a sprocket or hub onto a Plaction wheel, use 10-32 x 1.75" socket head screw (qty. 3 or 6), and 10-32 nylock nuts. To use one sprocket on each side of a Plaction wheel (2 sprockets total) use 10-32 x 2.5" screws (3 or 6) and 10-32 nylock nuts. 

With Axle and Hub:

• If you wish to drive this wheel with an Axle and Hub, you can pick your hub by fitting any of the AndyMark hubs (except the Small DD Globe Hub) to this wheel. Hubs are NOT included in the price of the wheel. If this is your choice, then no bearing is needed.

With Sprocket:

• If you wish to drive this wheel with a sprocket, then the sprocket needs to be attached to the side of the wheel, and two ball bearingsneed to be pressed into the wheel (one on each side). The smallest sprocket that will work with these wheels is a S35-24 tooth and a S25-36 tooth sprocket.

With Bearing:

• If your design needs this wheel to spin on a stationary axle (and possibly be driven by a sprocket), you will need 2 bearings with a 1.125" od pressed into this wheel. Use am-0029 for a 1/2" bore and am-0209 for a 3/8" bore. One bearing is pressed into each side of the wheel. Bearings are NOT included in the price of this wheel.

With Tread:

• This wheel is designed to capture 1" wide conveyor belt tread (Roughtop or Wedgetop) between 2 wheel halves. The 6 perimeter screws can be loosened by 1/8 inch to install the desired tread. We recommend using Alligator Clips to hold the tread together on the wheel. One 8" Wheel Roughtop Tread is included in the price of the wheel.

For a Wider Wheel: 

• This wheel is designed so that a 7" PVC schedule 40 (estimated) pipe can be inserted between the two wheel halves, and a wider wheel can be created (additional tread may be needed)

Fastener kit for assembling AndyMark hubs to Pneumatic Wheels. 


Included Hardware: 

• Six - Individual #10-32 x 2.0" long Socket Head Cap Screw, steel, zinc plated
• Six - Individual #10-32 Nylock Nut, steel, zinc plated

Fastener kit for assembling AndyMark plate sprockets to Pneumatic Wheels.

Weight: 0.196 pounds

Included Hardware:

• Six - Individual #10-32 x 2.5" long Socket Head Cap Screw, steel, zinc plated
• Six - Individual #10-32 Nylock Nut, steel, zinc plated
• One - 550 Sprocket Spacer
•  

This kit mounts a sprocket to a 4" Plastic Dualie

Included Hardware: 

• One - 250 Sprocket Spacer
• Six - Individual #10-32 x 2.25 inch socket head cap screw
• Six - Individual #10-32 nylock nut

Stud-Mount Ball Transfer, 1" Steel Ball, 1/4"-20 Thread

Specifications:

• Ball Diameter: 1" inches
• Width Across Middle: 1-3/4 inches
• Thread Length: 1/2"
• Body Material: Steel
• Load Capacity: 75 pounds
• Weight: 0.33 pounds

The intent of this product is to use this tread for Plaction Wheels and Performance Wheels. These treads have no holes. Holes are to be added at assembly. 

This carbox nitrile material provides excellent wear characteristics while giving great traction on tight pile carpet. 

Specifications: 

• Size: 1 inch wide x 10 feet long
• Thickness: 0.28 inch
• Coefficient of Friction on tight-pile carpet: 1.19
• Backing material: 3 ply conveyor belting
• Tread material: Carbox Nitrile rubber
• Tread Pattern: Roughtop
• Color: Blue
• Weight: 1.1 pounds

Omni-directional wheels in the smallest diameter offered by any common FIRST Robotics Competition or FIRST Tech Challenge supplier.

These 50 mm / 2 inch omni wheels features two different durometers:

• Soft 35A rollers for high traction
• Hard 90A rollers for long life

They also have a standard 14 mm Hex Bore, letting you choose between 3 different bores:

• 0.375 in. Hex - includes 14 mm Hex to 3/8 in. Hex Adapter (am-3905)
• 0.5 in. Hex - includes 14 mm Hex to 1/2 in. Hex Adapter (am-3904)
• 14 mm Hex - no adapters included

Stack several of these wheels on a shaft to craft an unstoppable intake system for your robot that can be used to center game pieces.

Specifications

• Bore: 0.375 in. Hex, 0.5 in. Hex, 14 mm Hex
• Diameter: 50 mm, 1.96 in.
• Durometer: 35A, 90A
• Load Capacity: 10 lbs
• Material: Glass Filled Nylon Body, Acetal Inserts, Thermoplastic Elastomer Rollers
• Weight: 0.076 lbs

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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