6204 Ball Bearing

Deep groove ball bearings are the most common type of rolling bearing.
Deep groove ball bearing
Deep groove ball bearing
The basic deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls and a set of cages. There are two types of deep groove ball bearings: single-row and double-row. The deep groove ball structure is also divided into two types: sealed and open. seal. The dust seal cover material is stamped from a steel plate, which simply prevents dust from entering the bearing raceway. The oil-proof type is a contact oil seal, which can effectively prevent the grease in the bearing from overflowing.
The single row deep groove ball bearing is coded as 6, and the double row deep groove ball bearing is coded as 4. Its simple structure and convenient use make it the most popular and widely used bearing.

http://www.hfdbearing.com/