Structure of rolling bearing

  1.1 Structure

•   Rolling bearings are generally composed of inner rings, outer rings or raceway rings, rolling elements, and cages.

•   Several rolling bodies are installed between the inner ring and the outer ring, which are kept at a certain interval by the cage to avoid contact with each other. Thus, smooth scrolling is performed.

•   Bearings can be divided into single-row, double-row, and multi-row (three-row, four-row, etc.) according to the number of rows of rolling elements.

  1) Ferrule (inner ring, outer ring) and raceway ring

• The part where the rolling elements roll on the ring is called the raceway, and its surface is called the raceway surface. The raceway of the ball-bearing ring is also called the raceway.

• In general, the inner and outer rings in the ferrule mate with the shaft and the housing, respectively.

• The ring of the thrust bearing is called the raceway ring, and the inner and outer rings are called the shaft washer and the bottom ring, respectively.

  2) Rolling body

• The rolling elements are divided into two categories: balls and rollers, and rollers have various types according to their forms.

   Lw: Roller length (mm) Dw: Roller diameter (mm)

  3) Cage

• The cage surrounds the rolling part to keep a certain interval in the circumferential direction.

• The cage consists of a stamping cage, cutting cage, forming cage and pin cage, etc.

• Compared with caged full complement ball (roller) bearings, caged bearings have lower frictional resistance and are suitable for high-speed rotation.

Wafangdian Jinrui Bearing Co., Ltd. provides a variety of bearings. If necessary, you are welcome to visit our official website to view specific information.