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Spray coating processing SPRAY PROCESSING
Electrical insulation bearings with specially coated inner and outer rings, offering excellent corrosion resistance and long service life—motor insulation bearings.
A key feature of insulated bearings is the presence of an extremely thin (on the order of micrometers) coating on their surface, which provides electrical insulation and can withstand electrical arcing caused by voltages exceeding 500V. A thicker coating can even resist high-voltage discharges up to 1,000V, thereby effectively preventing defects such as arcing induced by induced currents on the spindle and bearing, which could lead to corrosion on the bearing surface, the formation of shrinkage cavities on metal surfaces, and the creation of grooves on the bearing’s rolling elements. Here, a special note: At high frequencies, the induced shaft current can become substantial. If insulated bearings are not used, the circulating currents that flow through the bearing can easily cause overheating or severe electrochemical corrosion, ultimately leading to bearing damage.
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Product Description
Electrical insulation bearings with specially coated inner and outer rings, offering excellent corrosion resistance and long service life—motor insulation bearings.
A key feature of insulated bearings is that they have a very thin layer on their surface ( Um a coating of (level), which serves as electrical insulation and can withstand over 500V Electric sparks generated under voltage—thicker coatings can withstand them. 1000V High-voltage discharge can effectively prevent arcing on the spindle and bearings caused by induced currents, which in turn can lead to defects such as bearing surface corrosion, shrinkage cavities forming on metal surfaces, and grooves developing on the bearing rolling raceways.
Here Special note: At high frequencies, the induced shaft current can be substantial. If non-insulated bearings are used, the circulating currents that flow through the bearings can easily cause bearing overheating or severe electrical corrosion, leading to damage.
Coating on the inner or outer ring
Insulated bearings employ a special spraying process to apply a coating onto the outer surface of the bearing. This coating exhibits strong adhesion to the substrate and excellent insulating performance, effectively preventing electrochemical corrosion caused by induced currents. As a result, the lubricant, rolling elements, and raceways are protected from damage caused by electric currents, thereby extending the service life of the bearing.
This process is continuously being improved; in insulated bearings, there is a layer on either the outer or inner race surface. 100 mu m Thick coating, capable of withstanding 1000 V DC The voltage. A special spraying process can create a coating that is uniformly thick and exhibits strong, even adhesion. After further processing, this coating becomes resistant to the effects of moisture and humidity.
Electrical insulation bearings can prevent damage caused by electrical corrosion; therefore, when used in motors, they ensure more reliable operation compared to conventional bearings. Moreover, compared to other insulation methods—such as shaft or housing insulation—this approach is more cost-effective and dependable.
Under high-temperature conditions, its DC impedance can also... G The Ohm range exhibits excellent insulation performance. Ceramic rolling elements boast superior wear resistance and require low lubrication, making them particularly suitable for applications involving high speeds, low friction, and low-temperature operation. They perform well under dry-friction conditions. For small-sized rolling bearings, using ceramic rolling elements in insulated bearings offers excellent cost-effectiveness.
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Spraying equipment SPRAY EQUIPMENT
Electrical insulation bearings with specially coated inner and outer rings, offering excellent corrosion resistance and long service life—motor insulation bearings.
A key feature of insulated bearings is the presence of an extremely thin (on the order of micrometers) coating on their surface, which provides electrical insulation and can withstand electrical arcing caused by voltages exceeding 500V. A thicker coating can even resist high-voltage discharges up to 1,000V, thereby effectively preventing defects such as arcing induced by induced currents on the spindle and bearing, which could lead to corrosion on the bearing surface, the formation of shrinkage cavities on metal surfaces, and the creation of grooves on the bearing’s rolling elements. Here, a special note: At high frequencies, the induced shaft current can become substantial. If insulated bearings are not used, the circulating currents that flow through the bearing can easily cause overheating or severe electrochemical corrosion, ultimately leading to bearing damage.
轴承
绝缘
涂层
滚动
电绝缘
形成
表面
腐蚀
工艺
Product Description
Electrical insulation bearings with specially coated inner and outer rings, offering excellent corrosion resistance and long service life—motor insulation bearings.
A key feature of insulated bearings is that they have a very thin layer on their surface ( Um a coating of (level), which serves as electrical insulation and can withstand over 500V Electric sparks generated under voltage—thicker coatings can withstand them. 1000V High-voltage discharge can effectively prevent arcing on the spindle and bearings caused by induced currents, which in turn can lead to defects such as bearing surface corrosion, shrinkage cavities forming on metal surfaces, and grooves developing on the bearing rolling raceways.
Here Special note: At high frequencies, the induced shaft current can be substantial. If non-insulated bearings are used, the circulating currents that flow through the bearings can easily cause bearing overheating or severe electrical corrosion, leading to damage.
Coating on the inner or outer ring
Insulated bearings employ a special spraying process to apply a coating onto the outer surface of the bearing. This coating exhibits strong adhesion to the substrate and excellent insulating performance, effectively preventing electrochemical corrosion caused by induced currents. As a result, the lubricant, rolling elements, and raceways are protected from damage caused by electric currents, thereby extending the service life of the bearing.
This process is continuously being improved; in insulated bearings, there is a layer on either the outer or inner race surface. 100 mu m Thick coating, capable of withstanding 1000 V DC The voltage. A special spraying process can create a coating that is uniformly thick and exhibits strong, even adhesion. After further processing, this coating becomes resistant to the effects of moisture and humidity.
Electrical insulation bearings can prevent damage caused by electrical corrosion; therefore, when used in motors, they ensure more reliable operation compared to conventional bearings. Moreover, compared to other insulation methods—such as shaft or housing insulation—this approach is more cost-effective and dependable.
Under high-temperature conditions, its DC impedance can also... G The Ohm range exhibits excellent insulation performance. Ceramic rolling elements boast superior wear resistance and require low lubrication, making them particularly suitable for applications involving high speeds, low friction, and low-temperature operation. They perform well under dry-friction conditions. For small-sized rolling bearings, using ceramic rolling elements in insulated bearings offers excellent cost-effectiveness.
Prev: Roller-sprayed tungsten carbide coating—supersonic spraying for wear and corrosion resistance
Next: Supersonic Tungsten Carbide Coating for Injection Molding Machine Screws
Online Quotation
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