6 in. SR Mecanum Wheels

A wheel set is comprised of two left (am-3479L) and two right (am-3749R) wheels. Should you need a replacement wheel, a single left or right can also be acquired. These wheels have a weight capacity of 200 pounds per wheel.


Individual Components within Wheel Set:
Two - Left 6 in. SR Mecanum Wheels (am-3479L)
Each Left Wheel has these components
Fifteen - 6 in. SR Roller (am-3698)
Fifteen - Brass Axle Tube (am-0701a)
Thirty - 0.25 in. i.d. Bushing (am-0603)
Six - 3/16 in. Rivet (am-1226)
Fifteen - #10-32 x 2.25 in. SHCS
Fifteen - #10-32 Nylock Jam Nut
Two - 6 in. SR Mecanum Left Form Plate (am-0676a)
Two - 6 in. SR Hub Mid Form
Two - Right 6 in. SR Mecanum Plates (am-3479R)
Each Right Wheel has these components
Fifteen - 6 in. SR Roller (am-3698)
Fifteen - Brass Axle Tube (am-0701a)
Thirty - 0.25 in. i.d. Bushing (am-0603)
Six - 3/16 in. Rivet (am-1226)
Fifteen - #10-32 x 2.25 in. SHCS
Fifteen - #10-32 Nylock Jam Nut
Two - 6 in. SR Mecanum Right Form Plate (am-0675a)
Two - 6 in. SR Hub Mid Form
Roller and Axle Design:
The gray urethane rubber roller (am-3698) has a durometer rating of 80a. The roller has a polycarbonate core, and 2 high load bushings. The bushings ride on brass tubes, sandwiched between the plates with a #10-32 machine screw.

Wheel Structure:
15 rubber rollers are sandwiched between 2 steel plates. The steel plates are riveted and bolted to two interior cone-shaped aluminum pieces, which form the interior hub of the wheel. The two interior pieces are sandwiched together at the bore with a thickness of 0.25 inch. These wheels can be purchased in a set of 4, or individually. They are sold without hubs, sprockets, or bearings.

Driving with Axle and Hub Overview:
If driven by a round shaft, these parts are needed for each wheel
A hub fitting the size of the drive shaft. For 1/2 in. dia. shafts, use a 500 Key Hub (am-0077a) for each wheel.
#10-32 x 5/8 in. long screws (6), and #10-32 nylock nuts (6) fasten the hub to the wheel.
1/8 x 1/8 x 3/4 steel machine key (am-1043), one per wheel
Driving with a Sprocket:
If driven by a sprocket, these parts are needed for each wheel.
Flanged ball bearings with 1.125 in. od: either 3/8 in. inside diameter (am-0573), or 1/2 in. i.d. (am-0030)
Two 550 sprocket spacers (am-0651) are used to space the sprocket away from the wheel, for chain clearance.
A sprocket (type A) with a bolt hole circle of 1.875 in. diameter mounts to the wheels' interior bolt pattern.
#10-32 x 1.75 in. long screws (6), and #10-32 nylock nuts (6) fasten the sprocket and spacers to the wheel.