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View Full Version : Where to buy Omni Wheels 6"

Asymons
30-01-2015, 15:08
Hello Everyone,

Our team was a little late in purchasing some 6" Omni Wheels from Vex Pro, and now we cannot find them anywhere. On their main site it is sold out and every reseller either does not have the wheels in stock, or they do not sell them in the first place.

On our robot, we planned to have two unpowered omni wheels in the front of our robot powered by some wheels with rubber treads.

Does anyone know of another type of wheel that would preform like an omni wheel used in our purpose? Or maybe, another brand other than vex pro that has these types of omni wheels that can hold about a 200lb load. Thank you for your help.
Peyton Yeung
30-01-2015, 15:09
AndyMark sells a 6" omni wheel (http://www.andymark.com/product-p/am-0013.htm)
Asymons
30-01-2015, 15:11
AndyMark sells a 6" omni wheel (http://www.andymark.com/product-p/am-0013.htm)

Thank you for the response. The only problem is that it has a 50lb load max.
"Load Capacity: 50 pounds (rollers don't spin past this weight)"
z_beeblebrox
30-01-2015, 15:12
Never mind. Please delete.
BenDSterling
30-01-2015, 15:15
Thank you for the response. The only problem is that it has a 50lb load max.
"Load Capacity: 50 pounds (rollers don't spin past this weight)"

They have a 50 pounds max per wheel. So, if you are using 4 wheels, you have a 200 pound max. The robot weight limit is 120 so you should be fine.
Asymons
30-01-2015, 15:23
They have a 50 pounds max per wheel. So, if you are using 4 wheels, you have a 200 pound max. The robot weight limit is 120 so you should be fine.

We are only using two in the front, where the totes will be held. So for us it would be a max of 100lb, and if we are carrying 6 totes, that's approximately 48lbs + other mechanisms that would be present. It would be most preferable to have at least 100lb load per wheel then going off of your identification of the distribution of mass on the robot.
Lil' Lavery
30-01-2015, 15:24
If they're unpowered, why not opt for a different size Omni wheel in that location? When functioning essentially as a caster, the diameter shouldn't matter so long as the wheel is touching the floor. It may require some modification to your bearing/axle mount, but depending on your design that may not be a big deal.

Alternatively, you could double up on the AndyMark omnis to further distribute the load on each wheel.
Asymons
30-01-2015, 15:32
If they're unpowered, why not opt for a different size Omni wheel in that location? When functioning essentially as a caster, the diameter shouldn't matter so long as the wheel is touching the floor. It may require some modification to your bearing/axle mount, but depending on your design that may not be a big deal.

Alternatively, you could double up on the AndyMark omnis to further distribute the load on each wheel.

Thank you for the suggestion. Our design may not be able to double up on the wheels, but I will ask our mentor if incorporating a difference wheel size would work for our design of the robot. I shall update the post once I get his answer. Thank you :)

Edit: He said if there are no alternatives to getting 6" wheels to match we may go with the 8" ones. The main concern is our robot and how it may not be parallel to the ground. Also we don't want to do the machining for the 8", we would like to stay away from machining it as much as possible.