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4" HD Mecanum, Single Left (am-3026L)

 
Price: $52.00

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Product Overview:
This version of the wheel can handle a 100 pound load. 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. Wheels ship assembled.

Product Usage:
For a mecanum drive system to work you must use two right and two left wheels.

Specifications:
  • Diameter: 4"
  • Width Across Middle: 2.184"
  • Bore: 1.125 inch
  • Bolt Pattern: 6 holes (0.157 in diameter) on a 1.875 inch diameter circle
  • Body Material, Outer: 0.09 inch thick steel, zinc plated
  • Body Material, Inner: molded black polycarbonate
  • Load Capacity: 200 pounds
  • 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
  • Number of Rollers: 9
  • Roller Material, Outside: Urethane rubber (gray)
  • Roller Material, Inside: Nylon (white)
  • Roller Durometer: 77A
  • Roller Bearing Material: Nylon spinning over brass tube
  • Roller Axle: Brass tube
Individual Hardware within Assembly:
  • Two - Left HD Mecanum Plates
  • Two - Hubs
  • Nine - Individual 4" Wheel Rollers
  • Nine - Brass axle tubes
  • Nine - M3 x 55MM SHCS
  • Nine - M3 x 0.5" Nyock Nut
  • Eighteen - 1/8" dia. rivets
Roller and Axle Design:
The gray urethane rubber roller (am-3027) has a durometer rating of 77a. 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 in a set of 4 (2 rights, 2 lefts), or individually. 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
With Axle and Hub: If driven by a shaft, these parts are needed for each wheel
  • A hub fitting the size of the drive shaft. For 1/2" dia. shafts, use a 500 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" od: either 3/8" inside diameter (am-0209), or 1/2" i.d. (am-0181)
  • A sprocket (type A) with a bolt hole circle of 1.875" 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).

Usage:
With Axle and Hub: If driven by a shaft, these parts are needed for each wheel
  • A hub fitting the size of the drive shaft. For 1/2" dia. shafts, use a 500 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" od: either 3/8" inside diameter (am-0209), or 1/2" i.d. (am-0181)
  • A sprocket (type A) with a bolt hole circle of 1.875" 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).

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