Determination of Linear Velocity and Material of Outer Spherical Surface Bearing with Seat

Determination of linear speed of outer spherical surface bearing with seat

On two CXP900 with different speeds × Install bearings of the same style and material on the 600 paper shredder, and compare the relationship between the linear speed of the experimental bearings and the service life of the bearings. At a rotational speed of 960r/min, the linear speed of the bearing is 45m/s, the service life of the first pair of bearings for kiln broken clinker is 3500t~4000t, the discharge particle size is<5mm, and the pure wear of the bearing is about 8g/t. When the rotational speed is 610r/min, the linear speed of the bearing is 28.8m/s, the service life of the first pair of bearings for crushing shaft kiln clinker is 6500t~7500t, the discharge particle size is 8mm, and the pure wear of the bearing is about 4g/t. Evaluation of the above consequences: The higher the linear speed of the bearing, the greater the wear. According to this rule, we plan to have a working linear speed of 0.45m/s and a rotational speed of 2.7~8.7r/min, which is 1/120~1/100 of the working linear speed of other domestic fragmentary machines. Ultra slow linear speed creates beneficial prerequisites for the durability, vibration, power consumption, and environmental protection of the machine, especially the selection of wear-resistant materials.

2. Determination of wear-resistant material

According to the wear mechanism of wear-resistant materials, when the hardness of wear-resistant parts is lower than the hardness of clinker, the wear speed is very fast, otherwise the wear resistance is greater. If the toughness of the bearing material is not enough, it will cause chipping, peeling, or fatigue corrosion under the high-speed impact of the clinker.

As labor peels off, the rate of wear increases. More important is the low toughness and easy fracture. Due to the higher hardness and lower toughness, high hardness wear-resistant components are difficult to use in high linear speed and high impact crushers. The hardness of shaft kiln clinker is generally HRC50~52, and that of reverse kiln clinker is HRC52~54. Therefore, the wear-resistant hardness of crushed clinker must reach HRC58 or above to achieve good wear-resistance. Using the principle of ultra-slow shear fragmentation, the fragmentation machine has much less impact during operation and much less heat of conflict during operation. High hardness wear-resistant materials can be selected.

Outer spherical bearing with seat is a bearing unit that connects a rotary bearing and a bearing seat. Large area outer spherical bearings have a spherical outer diameter, and heavy bearing seats are installed together with bearing seats with spherical inner holes. They have diverse layouts, good versatility, and interchangeability.

At the same time, this type of bearing also has inevitable centering in planning, convenient installation, and dual layout of sealing devices, which can work under adverse conditions. The bearing seat is generally forged. Common seats include vertical seat (P), square seat (F), convex square seat (FS), convex circular seat (FC), diamond seat (FL), annular seat (C), slider seat, etc. (T).

A bearing is a bearing unit that connects a rotary bearing and a bearing pedestal. Large outer spherical bearings are spherical in outer diameter and installed together with imported bearing seats with spherical inner holes. The layout is diverse, with good versatility and interchangeability.

At the same time, this type of bearing also has inevitable centering in planning, convenient installation, and dual layout of sealing devices, which can work under adverse conditions. The bearing seat is generally forged. Common seats include vertical seat (P), square seat (F), convex square seat (FS), convex circular seat (FC), diamond seat (FL), annular seat (C), slider seat (T), etc.