According to the types of rolling elements, bearings are divided into:
1) Tilting pad journal bearing - rolling balls are balls;
2) Roller bearings - rolling elements are rollers.
According to the roller type, roller bearings are divided into:
Cylindrical roller bearings - rolling elements are cylindrical roller bearings, the ratio of the length of the cylindrical roller to the diameter is less than or equal to 3;
Needle roller bearing - rolling element is the needle roller bearing, the ratio of the length and diameter of the needle roller is greater than 3, but the diameter is less than or equal to 5mm;
Tapered roller bearings ---- rolling elements are tapered roller bearings;
Spherical roller bearings are spherical roller bearings.