Bearings are one of the most important parts of a scooter. Smooth running bearings are a must for a great ride. If your bearings are running smoothly, you can go faster and glide longer.
Here, I have found reputable low-priced bearings.
These bearings are inexpensive, but not lacking in quality. They have a removable rubber shield on one side which enables you to take these bearings apart and clean them. This way you can make your investment last longer.
There is a high-speed nylon ball retainer versus a metal retainer, which gives greater strength and less friction or heating up of the bearings like you would get with metal on metal.