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4" Standard Mecanum, Wheel Set (am-2626)

 
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Price: $89.00

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Product Overview:
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:77A
  • 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.

Average Customer Review: 4 of 5 Total Reviews: 10 Write your own review!

  0 of 0 people found the following review helpful:
 
December 1, 2017
Reviewer: Zachary Van Note from Albuquerque, NM United States  


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4" Standard Mecanum, Wheel Set (am-2626) November 29, 2017
Reviewer: Charlie Parker FTC10985 from Fort Worth, TX United States  
Wheels are working great on the robot.

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  0 of 0 people found the following review helpful:
 
good wheel but lubs? March 17, 2017
Reviewer: Allen Pan  
i love them, but do i need lub the roller? if so which lubs?

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Great looking wheels September 20, 2016
Reviewer: Ramprabhu Rathnam from Snoqualmie, WA United States  
Great wheels -looks cool and kids love it.  We weren't able to use them at FTC since it failed the field test :(.

(AndyMark Response 9/20/16 : The FTC tile test is to ensure a robot/wheels do not damage the Soft Tile playing surface. This dynamic of the robot is dependent on the wheel, weight of the robot, and gear ratio. We have seen many teams use these wheels with successes over the last few years.)

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They work, but they're fragile April 7, 2015
Reviewer: Michael Anderson from Herndon, VA United States  
I had a couple of these get busted up in shipping when I shipped my robot to the west coast.  So, I had to buy a couple more sets for spares.  Just beware that while they do work, they're not the most robust solution out there.

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