QDFQ Silicon nitride ceramic ball is a precision ceramic sintered at high temperature in a non-oxidizing atmosphere. It has high strength, high wear resistance, high temperature resistance, corrosion resistance, acid and alkali resistance, and can be used in seawater for a long time. good performance. At 800°C, 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. The centrifugal force is small when rotating, and high-speed operation can be realized. It also has self-lubricating properties, and it can be used in environments with high pollution of non-lubricating media. Become the first choice material for ceramic bearings and hybrid ceramic ball bearings.

hybrid ceramic balls bearing, that is Si3N4 ceramic balls are used for the rolling elements, and the bearing ring is still a steel ring. This kind of bearing has a high degree of standardization, little change to the structure of the machine tool, and is easy to maintain, especially suitable for high-speed operation occasions. The high-speed electric spindle assembled by it has the advantages of high speed, high rigidity, high power and long life.

Advantages of hybird Ceramic Ball Bearings:

1. High temperature resistance

The thermal expansion coefficient is small, and the ceramic ball will not expand due to temperature in a high-temperature environment, thereby greatly increasing the service temperature of the entire bearing. The temperature of ordinary bearings is about 160°, while its temperature can reach more than 220°.

Hybird ceramic ball bearing has oil-free self-lubricating characteristics, and the friction coefficient is small, so the bearing speed is high. According to statistics, its bearing speed is more than 1.5 times that of steel bearings.

2. Long life

Hybird ceramic ball bearing can be used without any grease, that is to say, even if the grease is dry, the bearing can still run, thus avoiding the premature bearing damage caused by the dry grease in ordinary bearings. According to our tests，the service life of bearings using ceramics is 2-3 times that of steel bearings.

3. Insulation

The important point is insulation. Hybird ceramic ball bearings can insulate the inner and outer rings of the bearing. Because ceramics are insulators, insulation can be achieved by using ceramics  between the inner and outer rings of the bearing. This enables the bearing to be used in conductive environments. Rolling bearings consist of rings, rolling elements, cages, grease and seals.

Qingdao Fuqin can provide silicon nitride ceramic balls of various sizes and grades, and also provide OEM services, please contact our customer service staff for more details.