Advantages and disadvantages of thin section four-point contact ball bearings

What is thin section four point contact ball bearing?

Thin section four point contact ball bearingsare mainly used to withstand radial loads, but when the radial clearance of the bearing is increased, they have a certain degree of angular contact bearing performance and can withstand combined radial and axial loads. When the speed is high and thrust bearings are not suitable, they can also be used to withstand pure axial loads. Compared with other types of bearings of the same size, this type of bearing has a small coefficient of friction and a high limit speed. But it is not resistant to impact and is not suitable for bearing heavy loads.

Features of thin section four-point contact ball bearings

Compact structure: The thin section design of the bearing makes it relatively small in radial size, which can effectively save installation space, especially suitable for equipment with high space requirements, such as aerospace, precision instruments and other fields.

Light weight: Due to the thin section structure, the weight of the bearing is lighter than that of ordinary bearings, which is very beneficial for some application scenarios that need to reduce weight, such as robot joints, high-speed rotating parts, etc., which helps to reduce the overall energy consumption of the equipment and improve the motion performance.

Good performance at high speed: The structure of the four-point contact ball bearing makes the point contact between the steel ball and the raceway, with low friction resistance, combined with the thin-wall design, the moment of inertia is low, so it can run stably at high speed, and is suitable for equipment with high speed requirements such as high-speed motors and centrifuges.

High load carrying capacity: Although it is point contact, with reasonable design and optimization, Thin section four-point contact ball bearings can withstand large radial and axial loads. Especially in the case of bearing pure axial load or large axial load, it shows good load-bearing performance, and can be applied to some mechanical structures that need to bear large axial force.

Good flexibility: This type of bearing can bear both radial and axial loads, and can be flexibly carried in different directions, and has good adaptability to complex stress conditions, and is often used in some mechanical parts that require multi-directional load capacity, such as rotary tables in industrial automation equipment.

Easy installation: The structure of thin section four-point contact ball bearings is relatively simple, and the installation and disassembly are relatively convenient, which can reduce the maintenance cost and downtime of the equipment and improve the efficiency of the equipment.

Advantages and disadvantages of thin section four-point contact ball bearings

Thin section four-point contact ball bearings are a special type of rolling bearing, and the following are their advantages and disadvantages:

merit

Compact structure: The thin section design makes it have a small radial size, which can achieve high load-bearing capacity in a limited space, and is suitable for occasions with strict installation space requirements, such as aerospace, precision instruments and other fields.

High rotation accuracy: The structural characteristics of four-point contact ball bearings enable them to withstand two-way axial loads and radial loads, and the rotation accuracy of the bearings can be improved by preloading and other methods to meet the operation requirements of high-precision equipment, such as machine tool spindles, industrial robot joints, etc.

Small friction torque: Due to the small number of contact points between the ball and the raceway and the small rolling friction coefficient, the friction torque of thin section four-point contact ball bearings is relatively small, which can reduce energy consumption and improve the efficiency of equipment, and is suitable for high-speed rotating parts.

Easy installation: Thin section four-point contact ball bearings usually adopt a split structure, and the inner ring, outer ring and rolling elements of the bearing can be installed on the shaft and bearing seat respectively during installation, and then assembled, the installation process is relatively simple, saving installation time and cost.

shortcoming

Relatively limited load carrying capacity: Although thin section four-point contact ball bearings are able to withstand certain loads in a compact configuration, their load carrying capacity is still relatively low compared to some thick section bearings or other types of bearings. Under high-load, high-impact working conditions, it may be prone to fatigue wear, ball rupture and other problems, which limits its application in some heavy-duty fields.

High requirements for working conditions: The bearing has strict requirements for the temperature, humidity and lubrication conditions of the working environment. High temperatures, humidity or poor lubrication can affect the performance and life of bearings. For example, in a high-temperature environment, the thermal expansion of the bearing material may cause a change in the gap between the ball and the raceway, affecting the normal operation of the bearing.

Complex manufacturing process: The thin section structure and high-precision requirements of thin section four-point contact ball bearings make the manufacturing process more complex, and the processing equipment and process level are high. This not only increases the manufacturing cost, but also the requirements for quality control in the production process are very strict, and any small manufacturing error can affect the performance and reliability of the bearing.

High cost: Due to the complex manufacturing process, the need to use high-precision processing equipment and high-quality materials, coupled with strict quality control requirements, the manufacturing cost of thin section four-point contact ball bearings is higher. This makes it limited in some cost-sensitive application fields, such as general industrial equipment and civilian products.

Thin section four point contact ball bearings supplier

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