Views: 0 Author: Site Editor Publish Time: 2021-12-01 Origin: Site
When it comes to bearings, the lighter the better, silicon nitride is lighter than steel, ceramic bearing balls are less than half the weight of steel, and EV engineers like to keep the weight as low as possible, but that's not the only benefit. ceramic bearing balls create less friction within the bearing assembly, which means they require less lubricant, less wear, less raceway stress and lower operating temperatures.
How to properly clean ceramic bearings?
What is the importance of ceramic balls in ceramic bearings?
Why do ceramic bearings attract attention in the field of electric vehicles?
ceramic bearings are mainly used in special environments, such as acid-base, high temperature and low cold, oil-free self-lubricating, and non-magnetic and electrical insulation environments. In order to make the bearing life longer, no matter what type of bearing should be regularly maintained.
There are two wheel components of ceramic bearings:
1. Pure ceramic bearings do not add lubricating grease inside. Some pure ceramic bearings do not have sealing rings, and some have sealing rings. Even if a little dust enters, it will not affect its lubricating performance.
2. Hybrid ceramic bearings are generally added with different performance greases (according to customer needs). After riding for a certain mileage or time, it is necessary to maintain it. Remove the sealing ring of the bearing, use relevant cleaning products to remove the internal dirty grease, and then re-inject the grease.
The ceramic ball also has self-lubricating properties, and it can be used in environments with high pollution without lubricating media. Become the preferred material for ceramic bearings and hybrid ceramic ball bearings. Zirconia ceramic balls have high strength and toughness at room temperature, good wear resistance, high temperature and corrosion resistance, high stiffness, non-magnetic conductivity, and electrical insulation. At 600 ℃, the strength and hardness of zirconia ceramic balls are almost unchanged, the density is 6.00g/cm3, and the thermal expansion rate is close to the expansion rate of metals, so it can be used in conjunction with metals.
An application related to electric vehicles is traction motor shaft bearings, which may be subjected to very high speeds. At high rotational speeds, the benefit of lighter mass is magnified due to inertia. Ceramic balls in ceramic bearings are not only lighter than steel, they are stronger, ceramic bearings are twice as hard as steel, more than 60% harder than steel, and not easily deformed. This is useful when considering ceramic bearing life and bearing efficiency. Metal races have inherent surface defects due to their manufacturing process, and the surface of the ball is very hard and very smooth, and these defects are eliminated over time.
After reading these words, are you interested in ordering ceramic bearings? If necessary, you can contact Shandong Xuanye Precision Machinery Co., Ltd., an advanced sofa manufacturer.