8 inch direction wheel 203mm double aluminum omni wheel with bearing rollers 14125 features:

Zoty Bearing

The (8 inch) 203mm double aluminum omni directional wheel has a robust body when compared to plastic omni directional wheel. 

This wheel can be driven by the hubs, and one wheel can be driven by a hub.The omni direction wheel Used for robot kits, cart wheels, and other applications 

that require this wheel’s special features.

Specifications:

Diameter: 8 inches(203mm)

Axial Width: 39mm

Number of Plates: 2

Number of rollers: 36

Body Material: Aluminum alloy

Roller Material: Rubber

Roller Bearing: Ball bearing

Roller Diameter: 19mm

Net Weight: 1.3kg

Load Capacity: 50kg

8 inch direction wheel 203mm double aluminum omni wheel with bearing rollers 14125 as below:

What are the advantages and disadvantages of the Omni wheel?

The advantages of the Mecanum wheel and the omnidirectional wheel are flexibility and convenience, and the disadvantage is expensive. The omnidirectional wheel, as the name suggests,

 can move in any direction, at any angle, and in any direction. mecanum wheel these rollers having an axis of rotation at 45° to the plane parallel to the axis of rotation of the wheel.