Shandong XuanYe Precision Machinery Co., Ltd.
EnglishViews: 0 Author: Site Editor Publish Time: 2021-12-15 Origin: Site
With the continuous progress of processing technology and the increasing level of craftsmanship, the cost of ceramic bearings has continued to decline. It has been applied in a small range of high, precise and cutting-edge fields from the past, and has been gradually extended to various industrial fields of the national economy. Product market price It is also gradually approaching practicality and reaching a level acceptable to users. The wave of large-scale application of ceramic bearings has come!
What are the practical applications of ceramic bearings?
What is the difference in physical properties between zirconia and silicon nitride in ceramic bearings?
What is the function of ceramic balls in ceramic bearings?
1. Electric motor
The use of ceramic bearings in the motor can achieve permanent insulation. When the motor is used for deceleration and energy-saving devices, the internal leakage can cause arc discharge.
2. Aero engine
In the fuel pump of aero-engine, the ceramic bearing can work in liquid oxygen and liquid hydrogen medium for a long time, and the ceramic bearing has been proved to go through 50 launches without damage.
3. Aircraft parts
The aircraft industry has used ballscrews with ceramic balls for aircraft flap adjusters, and has also attempted to use hybrid ceramic bearings in the engines of gas turbines.
In terms of physical properties, zirconia ceramic bearings are excellent in wear resistance and corrosion resistance, while silicon nitride ceramic bearings also have the same excellent performance. At the same time, silicon nitride ceramic balls also perform well in machining accuracy. Therefore, in the application field of high-precision machinery industry, such as super-precision bearings, in addition to the widespread use of steel balls, ceramic balls have also begun to popularize in precision bearings. Compared with the bearing steel ball, the ceramic ball has the characteristics of anti-corrosion and anti-rust, and the processing accuracy is even better than that of the steel ball. At the same time, it can withstand high temperature in high temperature environment. Therefore, ceramic balls have appeared in bearings and other ultra-precision machinery fields, such as guide rails, linear sliding accessories, etc., and have a tendency to replace steel balls.
Silicon nitride ceramic balls are precision ceramics sintered at high temperature in a non-oxidizing atmosphere. They have high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, can be used in seawater for a long time, and have electrical and magnetic insulation properties. good performance. At 800 ℃, the strength and hardness are almost unchanged, and its density is 3.20g/cm3, which is almost 1/3 of the weight of bearing steel, and the centrifugal force is small during rotation. High-speed operation can be achieved.
Shandong Xuanye Precision Machinery Co., Ltd. is able to manufacture the Metric/Inch tapered roller and deep groove ball bearings of P0, P6 and P5 precision classes with the outer diameters 40mm, 300mm and 500mm. Those products are mainly applied to the fields of automobiles, engineering machinery, machine tool and agricultural machinery. Also, the products are exported to the US and other developed countries in Europe.
