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Internal structure: This type of spherical roller bearing has a two-piece hardened steel stamping cage, an inner ring without a retaining edge and a center retaining ring with a guide guided by the cage.
Features: The middle retaining ring close to the outer ring can improve the lubrication of the roller end face and retaining ring contact; its role is to reduce bearing friction, help in the non-load area to guide the roller, and assist the roller into the load area. At the same time, the roller length is increased, so the rated load has a greater increase. The load rating can generally be increased by 20% to 35%.
1. Load-carrying capacity: Spherical roller bearings can withstand large radial loads and bi-directional axial loads; cylindrical roller bearings mainly withstand large radial loads.
2. Centring: spherical roller bearings have an automatic centring function, and can adapt to the angular deviation between the shaft and bearing housing; cylindrical roller bearings do not have centring.
3. Structural characteristics: spherical roller bearings have an outer raceway for the spherical shape, and the inner ring has two raceways, cylindrical roller bearings. The outer ring and inner ring are cylindrical.
QJ218-N2-MA belongs to a four-point contact ball bearing. It has an inner diameter of 90mm, an outer diameter of 160mm, a thickness of 30mm, a single-row bearing with locating grooves, a solid brass cage and an outer ring guide.
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