25 Series Symmetrical Hub Sprockets 500Hex, 22 Tooth

This new custom designed collar clamp has been designed specifically with FIRST Robotics Competition teams in mind. This product is Out of Stock until Mid March

This is the "500EX Hex Hub" the bore is a 1/2" Hex Hole. It is a slightly different version of the 500 Hex Hub. It is manufactured differently, as it is extruded. Also, there is a 1.124" diameter boss on each side of the hub flange, providing a location for 1.125" bore flat sprockets. Are you having a hard time keeping your sprocket concentric with your hub? This hub is the trick.

This is the hub featured in the 2014 and 2015 Kit of Parts Drive Chassis and fits all AndyMark wheels. 

Specifications:

• Material: 6063 Aluminum
• Bore: 1/2" Hex
• Bolt Pattern: 0.204" diameter holes, evenly spaced on a 1.875" diameter bolt circle
• Outside diameter: 2.25"
• Weight: .088

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

Product Overview: 
This is a 6" diameter wheel with a polycarbonate body and a TPU rubber "HiGrip" tread profile. This wheel features a 77A durometer tread material that is durable with long-life wear characteristics. Use this wheel for great tread life and good drivetrain response. 

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: 6 inches
• Body Material: Polycarbonate, black
• Tread Material: TPU rubber, 77a durometer
• Bore: 0.95 inch, with bearing pockets of 1.124 inch diameter x 0.25 inch deep on both sides
• Weight: 0.5 pound
• Bolt Pattern: six holes (0.17 inch diameter) on a 1.875 inch diameter bolt circle
• Coefficient of friction: 0.95-1.0 static (on tight pile carpet)
• Coefficient of friction on HDPE: 0.31
• Side Load: In excess of 600 lbs at tread surface
• Load capacity: 90 pounds

Usage: 

• Use #10-24x3/4 thread forming screws to attach sprockets or hubs to this wheel. 

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.

1/2 in. hex shaft is the life of many competitive robot components. This 1018 steel shaft is available in four lengths. The five inch shaft was used in various Modulox gearboxes and may come with a 1/4 in. hole drilled in one end. The other sizes can be used as shaft stock, ready to be cut to length as needed. The stock lengths ship un-plated ready for your choice of finish. 

Bolt Circle: 1.875" diameter,0.206" diameter holes
Inside Diameter: 1.1245"
Material: 6061 aluminum
Number of Teeth: 54
Outside Diameter: 4.444
Pitch Diameter: 4.311
Series: #25
Thickness: 0.086-0.092 in.
Weight: 0.16 lb

Bolt Circle: 1.875" diameter,0.206" diameter holes
Inside Diameter: 1.1245"
Material: 6061 aluminum
Number of Teeth: 42
Outside Diameter: 3.475
Pitch Diameter: 3.341
Series: #25
Thickness: 0.086-0.092 in.
Weight: 0.09 lb
 

Do you have a hard time finding some strong hex stock aluminum? We have it! This is 7075 series aluminum, which is great for use in transmission shafts.

Specifications:

• Material: 7075 Aluminum
• Width: 1/2" hex (0.496-0.499 inches)
• Weight: 0.27 pounds/ft
• Length: You specify, 1 foot, 3 feet or 6 foot in length, +/- 1"