7201 Angular Contact Ball Bearing (ZrO₂)

7201 Angular Contact Ball Bearing (ZrO₂) is a high-precision zirconia ceramic angular contact ball bearing. Its core is made of yttrium-stabilized zirconia, making it suitable for demanding and extreme transmission conditions.

I. Basic Dimensions and Weight Parameters

This bearing is model 7201. Dimensions in mm, weight in kg.

Reference weight: 0.028 kg, highlighting its lightweight characteristics.

II. Core Performance Advantages

● Complex Load Bearing Capacity: Utilizing an adjustable contact angle design of 15°–40°, it efficiently withstands radial and axial complex loads, meeting the transmission needs of equipment subjected to multi-directional forces.

● Extreme Temperature Resistance and Environmental Adaptability: Operating temperature range covers -200°C to +600°C with extremely low thermal expansion, resulting in minimal deformation during temperature changes. It operates normally without lubrication in vacuum environments.

● Outstanding High-Speed Operation Capability: High-speed performance reaches 1.5 times that of steel bearings. Low-friction characteristics reduce energy consumption and heat generation during high-speed rotation.

● Superior Material Properties: Yttrium-stabilized zirconia (ZrO₂) provides high hardness, strong corrosion resistance, and wear resistance. Its low density enables lightweight construction and excellent electrical insulation, preventing electrolytic corrosion from stray currents.

● High-Precision Operating Characteristics: As a high-precision ceramic bearing (P4/P5 grade available), it offers high operating accuracy and smooth, stable transmission for precision equipment.

III. Core Application Areas

● Medical Equipment: Dental handpieces, surgical power tools, and precision medical instruments requiring high speed, corrosion resistance, and lubrication-free operation.

● Semiconductor Manufacturing: Vacuum robots and wafer handling equipment – electrical insulation prevents current interference, ensuring process stability.

● High-Speed Spindles: PCB drilling spindles, small CNC machining centers – balancing speed and stiffness for precision machining.

● Aerospace Instrumentation: Actuators, gyroscopes, and lightweight mechanisms requiring extreme temperature tolerance and high reliability.

● Laboratory & Analytical Instruments: Centrifuges, mixers, and test equipment demanding high rotational accuracy and chemical resistance.

Overall, the 7201 zirconia angular contact ball bearing is a high-precision transmission component designed for demanding operating conditions. Through material and structural optimization, it overcomes the limitations of steel bearings in temperature resistance, corrosion resistance, high speed, and electrical insulation, becoming a key component in advanced equipment manufacturing.