Electrically insulated deep groove ball bearing
Electrically Insulated deep groove ball bearing is a kind of deep groove ball bearing which can prevent the current from passing through and has insulation performance. Its insulation performance is usually to process a layer of alumina coating on the outer ring or inner ring of the bearing with international advanced technology to withstand the voltage DC.
The insulated deep groove ball bearing is composed of inner ring, outer ring and rolling component. The rolling component includes steel ball and retainer. The outer surface of inner ring or outer ring of the bearing is provided with a ceramic insulating layer.
From the above description, it can be seen that the structure of insulated deep groove ball bearing and common deep groove ball bearing is the same, with the same size. All ferrules, retainers and steel balls are the same. Ferrules are made of high-quality bearing steel, and cages are designed with pressed steel and brass, as well as with nylon retainers for special purposes. The rolling elements has different designs of steel balls and ceramic balls, which we generally call It is a hybrid ceramic ball bearing. Both the deep groove ball bearing and the insulated deep groove ball bearing have two different designs of opening and sealing. There are two forms of deep groove ball bearing: oil lubrication and grease lubrication.
In addition, the Electrically insulated bearing also has the design of all ceramic bearing. The bearing rings and rolling elements are made of zirconia or silicon oxide. This kind of bearing has the characteristics of insulation, corrosion resistance and water resistance. All ceramic deep groove ball bearing, common deep groove ball bearing and insulated deep groove ball bearing can be selected according to the specific use of customers.
Electrically Insulated Deep groove ball bearing mainly bears radial load, but also can bear radial load and axial load at the same time. When it only bears radial load, the contact angle is zero. When the deep groove ball bearing has large radial clearance, it has the performance of angular contact bearing and can bear large axial load. The friction coefficient of the deep groove ball bearing is very small and the limit speed is very high.
Deep groove ball bearing is the most commonly used rolling bearing. Its structure is simple and easy to use. It is mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has certain performance of angular contact ball bearing and can bear combined radial and axial load. When the speed is high and it is not suitable to use thrust ball bearing, it can also be used to bear pure axial load. Compared with other types of deep groove ball bearing with the same size, the friction coefficient of this kind of bearing is small and the limit speed is high. But it is not resistant to impact and is not suitable to bear heavy load.
The basic coating of insulated deep groove ball bearing can withstand voltage up to 1000V DC. And can supply 500v-3000v DC coating according to customer’s requirements. Its model representation method is the same as that of ordinary type bearing, with only some suffixes added. According to different cage and sealing ring, the reference international bearing code can be divided into:
— Insulated deep groove ball bearing
— Sealed Insulated deep groove ball bearing
— Hybrid ceramic ball bearing
— Ceramic ball bearing
Electrically Insulated deep groove ball bearings are widely used in automobiles, tractors, machine tools, motors, generators, high-voltage motors, water pumps, agricultural machinery, textile machinery and environments with special applications.
The insulated deep groove ball bearing manufacturer as follows
— SKF made in Austria
— FAG From Germany
— NTN and NSK made in Japan
— CoatMaster Made In China
— NKE Made In Austria
