4 inch, HEAVY DUTY Mecanum wheel set, these come assembled as shown in the picture. This is a set of 4 wheels, consisting of 2 "right" wheels and 2 "left" wheels. All 4 wheels are required to make a Mecanum drive holonomic system to work properly. This version of the wheel can handle a 200 pound load per wheel. The interior body of this wheel is made of molded black poycarbonate, while the perimeter side plate is made of 1/8 inch thick steel, zinc plated. The perimeter plate is riveted to the interior body, and each perimeter bent tab rests on the interior body rim. This support allows for the wheel to handle more load. 

Specifications:

• Diameter: 4 in.
• Width Across Middle: 2.18 in.
• Bore: 1.124 in.
• Bolt Pattern: 6 holes (0.2 in. diameter) on a 1.875 in. diameter circle
• Body Material, Outer: 0.12 in. thick steel, zinc plated
• Body Material, Inner: molded black polycarbonate
• Load Capacity: 200 pounds per wheel
• Forward / Reverse Coefficient of Friction: 0.7 (on tight pile carpet)
• Sideways Coefficient of Friction: 0.6 (on tight pile carpet)
• Weight: 0.9 pound (each wheel)
• Number of Rollers: 9
• Roller Material, Outside: Urethane rubber (gray)
• Roller Material, Inside: Nylon (white)
• Roller Durometer: 80A
• Roller Bearing Material: Nylon spinning over brass tube
• Roller Axle: Brass tube

Individual Hardware within Each Wheel:

• Two - HD Mecanum Plates
• Two - Hubs
• Nine - Individual 4 in. Wheel Rollers
• Nine - Brass axle tubes
• Nine - M3 x 55MM SHCS
• Nine - M3 x 0.5" Nyock Nut
• Eighteen - 1/8 in. dia. rivets

Roller and Axle Design:
The gray urethane rubber roller (am-3027) has a durometer rating of 80A. The roller has a Nylon core, and rides on a stationary brass tube. 

Wheel Structure:
9 rubber rollers are sandwiched between 2 steel plates. The steel plates are riveted to two interior polycarbonate hubs, which form the interior of the wheel. The two interior pieces are held together by the fastening technique of the rollers being attached. 

These wheels can be purchased individually as Left (am-3026L) or Right (am-3026R) wheels. They are sold without hubs, sprockets, or bearings. 

Usage: 

For FTC Robots: If attached to a shaft or NeveRest motor, these parts are needed for each wheel

• A wheel conversion plate can be used to allow for mounting to smaller shaft sizes
• #10-24 thread-forming screws are used to fasten the conversion plate to the wheel (6 per wheel).
• 6mm D Bore AndyMark Nub or other 6mm Hub are needed to attach each wheel to a 6mm axle or NeveRest motor shaft.
•  

With Axle and Hub: If driven by a shaft, these parts are needed for each wheel

• A hub that matches the size of the drive shaft. For 1/2 in. dia. shafts, use a 1/2 in. Key Hub (am-0077a) for each wheel.
• #10-24 thread-forming screws are used to fasten a hub to the wheel (we suggest 6).
• 1/8 x 1/8 x 3/4 steel machine key (am-1043) is needed, one per wheel

With Sprocket: If driven by a sprocket, these parts are needed for each wheel

• Flanged ball bearings (qty. 2) with 1.125 in. od: either 3/8 in. inside diameter (am-0209), or 1/2 in. i.d. (am-0181)
• A sprocket (type A) with a bolt hole circle of 1.875 in. diameter mounts to the wheels' interior bolt pattern.
• #10-24 thread-forming screws are used to fasten a hub to the wheel (we suggest 6).

FTC Note: This product is NOT legal for FTC, we recommend our Stealth Wheel.

Product Overview: 
This is a 4 inch diameter wheel with HiGrip tread. The design of this wheel is very similar to our popular 6" HiGrip wheel, but with a smaller, 4" diameter. We feel that these wheels are a more durable option for teams' drivetrains. While they provide good traction, they make for a maintenance-free wheel for the average team. Under normal circumstances we feel that these wheels will last most FIRST Robotics Competition teams the entire season. No bearings or hubs are included in this wheel. 

Specifications:

• Diameter: 4 inches
• Body Material: Polycarbonate, black
• Tread Material: TPU (thermoplastic polyurethane)
• Bore: 0.95 inch
• Width: 1.375 inch
• Weight: 0.31 pound
• Bolt Pattern: six holes (0.17 inch diameter) on a 1.875 inch diameter bolt circle
• Static coefficient of friction on tight pile carpet: 1.07
• Static coefficient of friction on HDPE: 0.31
• Load capacity: 100 pounds

Usage: 

• Use #10-24x3/4 thread forming screws to attach sprockets or hubs to this wheel. Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, http://bit.ly/loctitematerialcheck

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 (not included) to this wheel. If this is your choice, then no bearing is needed. Use #10-24x3/4 thread forming screws to fasten a hub to this wheel.

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 ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209. Use #10-24x3/4 thread forming screws to fasten the sprocket to the wheel.

With Bearings:

• To press bearings into this wheel (for a free spinning wheel or for use with a sprocket), two ball bearings need to be pressed into the wheel (one on each side). The ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209.

HiGrip wheels provide superior traction for robot movement. HiGrip wheels feature an aggressive tread pattern providing maximum transfer of gearbox power to the ground. A robust polycarbonate core means these wheels are up to the challenge for high impact and speed applications. Varying durometers mean you can choose just how grippy these wheels can be. White or 77A durometer HiGrip wheels have a long life and provide good traction. Black or 60A durometer HiGrip wheels have an intermediate life and higher grip than white. Blue or 60A durometer HiGrip wheels provide the most traction and will wear quickly as a result. The bolt pattern and bore of these wheels allow for convenient bearing placement and easy attachment to other motion parts such as sprockets and pulleys. 

Product Usage: 
Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, http://bit.ly/loctitematerialcheck

Specifications:

• Diameter: 4" or 6"
• Body Material: Polycarbonate
• Tread Material: Thermoplastic Polyurethane
• Durometer: 77A (Grey), 60A (Black), 50A (Blue)
• Bore: 0.95", with bearing pockets of 1.124" diameter x 0.25" deep on both sides
• Bolt Circle: Six holes (0.17" diameter) on a 1.875" diameter bolt circle
• 77A Carpet CoF: 0.95-1.0 Static
• 60A Carpet CoF: 0.77 Static
• 50A Carpet CoF: 0.97 Static
• 4" Wheel Load Capacity: 100 Pounds
• 6" Wheel Load Capacity: 90 Pounds

Usage: 
Use #10-24x3/4 thread forming screws to attach sprockets or hubs to this wheel. Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, http://bit.ly/loctitematerialcheck

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 (not included) to this wheel. If this is your choice, then no bearing is needed. Use #10-24x3/4 thread forming screws to fasten a hub to this wheel.

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 ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209. Use #10-24x3/4 thread forming screws to fasten the sprocket to the wheel.

With Bearings:

• To press bearings into this wheel (for a free spinning wheel or for use with a sprocket), two ball bearings need to be pressed into the wheel (one on each side). The ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209.

HiGrip wheels provide superior traction for robot movement. HiGrip wheels feature an aggressive tread pattern providing maximum transfer of gearbox power to the ground. A robust polycarbonate core means these wheels are up to the challenge for high impact and speed applications. Varying durometers mean you can choose just how grippy these wheels can be. White or 77A durometer HiGrip wheels have a long life and provide good traction. Black or 60A durometer HiGrip wheels have an intermediate life and higher grip than white. Blue or 60A durometer HiGrip wheels provide the most traction and will wear quickly as a result. The bolt pattern and bore of these wheels allow for convenient bearing placement and easy attachment to other motion parts such as sprockets and pulleys. 

Product Usage: 
Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, http://bit.ly/loctitematerialcheck

Specifications:

• Diameter: 4" or 6"
• Body Material: Polycarbonate
• Tread Material: Thermoplastic Polyurethane
• Durometer: 77A (Grey), 60A (Black), 50A (Blue)
• Bore: 0.95", with bearing pockets of 1.124" diameter x 0.25" deep on both sides
• Bolt Circle: Six holes (0.17" diameter) on a 1.875" diameter bolt circle
• 77A Carpet CoF: 0.95-1.0 Static
• 60A Carpet CoF: 0.77 Static
• 50A Carpet CoF: 0.97 Static
• 4" Wheel Load Capacity: 100 Pounds
• 6" Wheel Load Capacity: 90 Pounds

Usage: 
Use #10-24x3/4 thread forming screws to attach sprockets or hubs to this wheel. Many thread locking materials are not compatible with polycarbonate and can eat away at the plastic. Be sure to check which adhesives are okay to use with this product. This link will allow you to check which materials are okay to use with what adhesives, http://bit.ly/loctitematerialcheck

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 (not included) to this wheel. If this is your choice, then no bearing is needed. Use #10-24x3/4 thread forming screws to fasten a hub to this wheel.

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 ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209. Use #10-24x3/4 thread forming screws to fasten the sprocket to the wheel.

With Bearings:

• To press bearings into this wheel (for a free spinning wheel or for use with a sprocket), two ball bearings need to be pressed into the wheel (one on each side). The ball bearing must have a 1.125" od. For a 1/2" id, use am-0181 or am-0029. For a 3/8" id, use am-0209.

The 4 in. Performance Wheel is a virtually indestructible wheel made out of solid 6061 aluminum. This competition-proven design has been used on FIRST Robotics Competition robots for many years. This new iteration of the wheel has been designed to keep costs down, as it is made from a custom extrusion instead of being fully machined from billet. This wheel can take anything an FRC robot can throw at it, and much more. Additionally this new version also includes a 1/8 in. thick boss on the rear (flat) side of the wheel to prevent unwanted friction in bearing outer races. This also reduces the part count on drivetrains.

This wheel is designed to be driven by a 1/2 in. Hex shaft, but also allows for other motion hardware that utilizes a 1.875 in 6-hole bolt circle found in many AndyMark and competition robotics products. To mount one of these to the rear (flat) side, use a 250 Sprocket and Pulley Spacer. To mount one to the front, use a 550 Sprocket Spacer. This wheel does not include tread material, which is available separately to tailor this wheel's performance to your application.

Note: This wheel is designed to utilize rivets to attach the tread to the wheel. AndyMark recommends steel 1/8" diameter rivets with a 0.251" - 0.312" grip range. The wheel has been manufactured with no holes on the rim, as it is intended to be a blank canvas for teams to install rivets freely. An installation video is coming soon.

Specifications:

• Material: 6061 Aluminum
• Weight: 0.35 lbs
• Diameter: 4 in. (with tread)
• Tread Width: 1 in.
• Bore: 1/2" hex
• Hub Mounting Holes: 6 threaded holes for #10-32 screws on a 1.875 in. diameter bolt circle

The 4 in. Performance Wheel is a virtually indestructible wheel made out of solid 6061 aluminum. This competition-proven design has been used on FIRST Robotics Competition robots for many years. This new iteration of the wheel has been designed to keep costs down, as it is made from a custom extrusion instead of being fully machined from billet. This wheel can take anything an FRC robot can throw at it, and much more. 

This wheel is designed to be supported by 1.125 in. OD (FR8) flanged bearings, but also allows for other motion hardware that utilizes a 1.875 in. 6-hole bolt circle found in many AndyMark and competition robotics products. To mount one of these to the rear (flat) side, use a 250 Sprocket and Pulley Spacer. To mount one to the front, use a 550 Sprocket Spacer. This wheel does not include tread material, which is available separately to tailor this wheel's performance to your application. 

Note: This wheel is designed to utilize rivets to attach the tread to the wheel. AndyMark recommends steel 1/8" diameter rivets with a 0.251" - 0.312" grip range. The wheel has been manufactured with no holes on the rim, as it is intended to be a blank canvas for teams to install rivets freely. 

Specifications:

• Material: 6061 Aluminum
• Weight: 0.30 lbs
• Diameter: 4 in. (with tread)
• Tread Width: 1 inch
• Bore: Press for 1.125 in OD (FR8) Flanged Bearing
• Hub Mounting Holes: 6 threaded holes for #10-32 screws on a 1.875" diameter bolt circle

The 4" Performance Wheel is a virtually indestructible wheel made out of solid 6061 aluminum. This competition-proven design has been used on FIRST Robotics Competition robots for many years, and is now available in a version friendly to FIRST Tech Challenge robots. This new iteration of the wheel has been designed to keep costs down, as it is made from a custom extrusion instead of being fully machined from billet in past versions of this wheel. This wheel can take anything an FRC or FTC robot can throw at it, and much more. 

This wheel is designed to be driven by an AndyMark Nub and a 6mm D shaft, but also allows for other motion hardware that utilizes a 1.875" 6-hole bolt circle found in many AndyMark and competition robotics products. To mount one of these to the rear (flat) side, use a 250 Sprocket and Pulley Spacer. To mount one to the front, use a 550 Sprocket Spacer. This wheel does not include tread material, which is available separately to tailor this wheel's performance to your application.

Note: This wheel is designed to utilize a zip-tie to attach and tension the tread to the wheel. While the method is similar to the previous version of this wheel (am-3434) a new guide on how to attach tread to this wheel is coming soon.

Specifications:

• Material: 6061 Aluminum
• Weight: 0.35 lbs
• Diameter: 4 in. (with tread)
• Tread Width: 1 in.
• Bore: 8mm
• Hub Mounting Holes: 4X #6-32 clearance on 16mm bolt circle, 6 threaded holes for #10-32 screws on a 1.875" diameter bolt circle

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

Specifications: 

• Diameter: 4 inches
• Width: 1.00 inch
• Width at Hub: 1.64 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: 200 pounds (estimated)
• Weight: 0.55 pounds
• Tread Capture: 0.9 inch wide (clamps tread)
• Tread Width: 1 inch
• Tread Type: Roughtop Conveyor Belting, Nitrile Material
• Coefficient of Friction on tight-pile carpet:

Included Hardware:

• Two - 4" Plaction Wheel Halves
• Six - Individual #10-32 x 1.5" SHCS (am-1014)
• Six - Individual #10-32 Nylock Nuts
• One - 4" 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 4" wheel Roughtop Tread is included in the price of the wheel.

For a Wider Wheel: 

This wheel is designed so that a 3" 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 is the rubber roller and spindle used in the 4" Mecanum Wheels. 

Specifications:

• Material (roller): TPU polyurethane
• Material (axle): Nylon
• Weight: 0.04 pounds

Included Hardware:

• Two - Individual 4-40 x 1/2" PPHS
• Two - Individual Rollers
• Two - Individual Washers
• One - Wheel Spindle

This is a single AndyMark Mecanum-style wheel, 4" in diameter, sold in an unassembled kit. The left and right-handed wheels use the same parts, and simply need to be assembled in different fashions in order to be made into the correct left and right wheels. This wheel is perfect for your FTC robot. If you're looking for an FRC drive train mecanum solution in a 4" form factor, check out the 4" HD Mecanum Left (am-3026L) and Right (am-3026R) Wheels.

A set of four wheels is available as a kit found here, am-2626(Wheel Set).
Replacement rollers can be found here: 4" Standard Mecanum Roller Kit, Single Axle (am-2539)


Specifications:

• Diameter: 4 inch (100mm)
• Width across middle: 1.125 inch (28.6 mm)
• Width at rollers: 2.0 inch (50 mm)
• Bore: 0.315 inch (8 mm)
• Bolt Pattern - Inner: 0.138 inch (3.5 mm) diameter holes on 0.630 inch (16 mm) bolt circle
• Bolt Pattern - outer: 0.200 inch (5.1 mm) diameter holes on 1.875 inch (47.6 mm) bolt circle
• Body Material: 50/50 ABS & PC
• Load Capacity: 17 pounds (7.7 kg) per wheel or 50 pounds (31.6 kg) per set of 4
• Forward / reverse coefficient of friction: 0.51 on FTC Soft-tile
• Sideways coefficient of friction: 0.67 on FTC Soft-tile
• Weight: 0.35 pounds per wheel (0.16 kg)
• Number of rollers: 6, with each being 2 independent rollers
• Roller material, outside: TPU polyurethane
• Roller durometer: 80A
• Roller axle material: Nylon

Included Hardware:

• Two - Mecanum Body Halves
• Twelve - Individual 4-40 x 1/2" PPHS
• Twelve - Individual Rollers
• Twelve - Individual Washers
• Six - Wheel Spindle
• Six - Individual 4-40 x 1" STS

Usage:
This wheel is designed to directly mount to a Tetrix Wheel Hub.

To use 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.

This is a set of four AndyMark Mecanum wheels, sold in unassembled kits. All four wheels use the same parts, you just assemble them in different configurations to create two left-handed and two right-handed wheels. With a load capacity of 50 pounds per set of four, these wheels are perfect for a smaller robot like the ones that compete in FIRST Tech Challenge. If your robot is going to be carrying around more than that, like most FIRST Robotics Competition robots do, check out the 4" HD Mecanum Set, (am-3067).

Here is where you can find replacement rollers: http://www.andymark.com/product-p/am-2539.htm 

Specifications:

• Diameter: 4 inch (100mm)
• Width across middle: 1.125 inch (28.6 mm)
• Width at rollers: 2.0 inch (50 mm)
• Bore: 0.315 inch (8 mm)
• Bolt Pattern - Inner: 0.138 inch (3.5 mm) diameter holes on 0.630 inch (16 mm) bolt circle
• Bolt Pattern - outer: 0.200 inch (5.1 mm) diameter holes on 1.875 inch (47.6 mm) bolt circle
• Body Material: 50/50 ABS & PC
• Load Capacity: 17 pounds (7.7 kg) per wheel or 50 pounds (31.6 kg) per set of 4
• Forward / reverse coefficient of friction: 0.51 on FTC Soft-tile
• Sideways coefficient of friction: 0.67 on FTC Soft-tile
• Weight: 0.35 pounds per wheel
• Number of rollers: 6, with each being 2 independent rollers
• Roller material, outside: TPU polyurethane
• Roller durometer: 80A
• Roller axle material: Nylon

Included Hardware:

• Eight - Mecanum Body Halves
• Fourty-Eight - Individual 4-40 x 1/2" PPHS
• Fourty-Eight - Individual Rollers
• Fourty-Eight - Individual Washers
• Twenty-Four - Wheel Spindle
• Twenty-Four - Individual 4-40 x 1" STS

Usage:
This wheel is designed to directly mount to any of our Nubs for gearbox attachment.

To use 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. To install a hub onto a 6" Mecanum Wheel, use Hardware Kit 2.

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

These rollers are used in the 6" DuraOmni Wheel. Ten of these rollers are used to allow the wheel to roll smoothly and omni-directionally.

Ten replacement rollers are included in this set. No other hardware is included.

Specifications:

• Number of Rollers: 10
• Roller Material,
  • Outside: Gray TPU rubber
  • Inside: White nylon
• Roller Durometer: 80A
• Roller Bearing Material: Nylon spinning on steel (dowel axle not included)
• Roller Length: 2.1 in
• Roller Diameter:
  • Max: 0.9 in
  • Min: 0.53 in
• Roller Weight: 0.04 lbs ea