MR74 4x7x2.5mm Zro2 全陶瓷微型深沟球轴承适用于遥控汽车、无人机、渔线轮

MR74 Full Ceramic Bearing – The Ultra-Compact High-Performance Bearing for Extreme Demands

Whether you’re upgrading a high-end RC car, repairing a critical medical turbine, or building equipment for corrosive chemical processing, the MR74 full ceramic bearing delivers the reliability and longevity you need.

主要特点:

• 1.耐腐蚀: The MR74 full ceramic bearing’s Zro2 components are chemically inert and impervious to corrosion, performing flawlessly even after extended immersion in seawater, chemical baths, or repeated autoclave sterilization cycle.

• 2.High-Temperature Tolerance: The MR74 full ceramic bearing maintains its strength and dimensional stability at temperatures up to 1200°C (2,192°F), with successful continuous operation demonstrated at up to 650°C in demanding vacuum environments.

• 3.高速: The low density of Zro2 dramatically reduces centrifugal forces at high rotational speeds, resulting in less heat generation, reduced vibration, and lower operating temperatures. The limiting speed can be increased by 30% 到 60% compared to equivalent steel bearings.

• 4.Non-Magnetic and Electrically Insulating: The MR74 full ceramic bearing is fully non?magnetic—a critical advantage in MRI machines, particle accelerators, electron microscopes, and any precision instrumentation where magnetic interference would degrade performance. It is also completely electrically insulating, preventing the electrical arcing damage that destroys steel bearings in variable frequency drive (VFD) motors.

• 5.Extended Service Life in Harsh Conditions: Under harsh operating conditions—inadequate lubrication, contaminated environments, 化学暴露, or high temperatures—steel bearings fail prematurely. The MR74 full ceramic bearing continues to perform, offering service life far exceeding steel equivalents in these demanding scenarios.

应用领域

• Radio-Controlled (RC) 型号
• Dental Turbine Handpieces
• Fishing Reels
• High-Speed Electric Motors
• Precision Medical Instruments
• Semiconductor and Vacuum Equipment
• Food and Chemical Processing