100mm 4 inches Double Aluminum Alloy Omni Wheel Bearing Rollers 14054 features:

The (4 inch) 100mm Double Aluminum Omni Wheel is a robust, durable and double row wheel that provides easy 360° movement, with rotational and sideways maneuverability. 

The 100mm double plate aluminium omni wheels have some rollers mounted along its circumstance and the rubber rollers to avoid slip. Each roller has two bearings allow the wheel

 to move smoothly and easily in ANY direction.

Features:

Diameter: 4 inches(100mm)

Axial width: 29mm

Number of plate: 2

Number of roller: 18

Body material: Aluminum alloy

Roller material: Rubber

Roller bearing : Ball Bearing

Roller diameter:19mm

Net weight: 335g

Load capacity: 30kg

100mm 4 inches Double Aluminum Alloy Omni Wheel Bearing Rollers 14054 pictures 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.