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Yuyao, Ningbo City, China
Bearing Shields for Racing Bearings
Racing bearings operate under extreme speed, heat, and load conditions, making high performance, low friction, and tight tolerances essential. However, beyond the bearing itself, the quality and structure of the bearing shield play a vital role in ensuring race-ready reliability.
Bearing Shields for Racing Bearings Manufacturer in China
Metal bearing shields (ZZ type) help:
Prevent dust, tire debris, and micro-particles from entering at high speeds
Maintain lubrication inside the bearing for consistent rotation
Withstand elevated temperatures without warping or loosening
Support longer bearing life during repeated race cycles
In high-stakes racing, even a small amount of contamination or friction loss can affect results. That’s why precision-engineered shields, paired with premium bearings, are a key factor in competitive performance.
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The different functions of metal bearing shields in racing bearings
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Wheel Hub Bearings
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Prevent road dust, gravel and water vapor from entering the bearing
Keep grease sealed to avoid temperature rise and jamming due to lubrication loss |
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Transmission Bearings
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Reduce the intrusion of impurities in gear oil
Extend the oil change cycle and keep the operation smooth |
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Clutch / Flywheel Bearings
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Resist metal chips and heat conduction pollutants
Avoid grease scattering |
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Engine & Turbo Bearings
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Special high-temperature resistant metal cover can block high-temperature exhaust gas particles
Provide short-term sealing support when the lubrication system pressure drops |
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Suspension Arm / Steering Bearings
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Prevent dirt and rain from corroding the inner wall of the bearing
Increase the impact resistance life of the system and reduce abnormal noise |
Bearing Shields in Racing Applications
All shielded bearings for motorsport applications must comply with strict automotive standards like IATF 16949, RoHS, and REACH, and are manufactured using high-purity steel and advanced heat treatment to deliver high rigidity, impact resistance, and long service life.
In racing, the integrity of the shield is just as important as the bearing itself.
Performance Advantages of Shielded Racing Bearings
The use of metal shields (ZZ type) helps:
Prevent debris intrusion at high RPMs
Stabilize lubrication over long-distance racing
Reduce the risk of early failure or unscheduled maintenance
This not only extends the service life of each bearing but also helps reduce fuel consumption and CO₂ emissions, contributing to more sustainable motorsports.
Bearing shields provide a critical barrier that protects high-performance bearings from dust, track debris, water, and lubricant leakage. In racing environments—where high speed, heat, and mechanical stress are constant—shields help ensure consistent bearing performance and prevent premature failure.
ZZ (metal shields) are ideal for racing due to their low friction, temperature tolerance, and structural stability at high RPMs.
2RS (rubber seals) offer better sealing but generate more friction and are not as heat-resistant, making them more suitable for off-road or lower-speed applications.
Yes. By keeping contaminants out and lubricant in, high-quality shields help extend bearing life and reduce the need for frequent disassembly, cleaning, or replacement—saving time and reducing race-day failures.
Shields used in high-performance bearings are produced under IATF 16949 automotive standards, and often undergo:
Dimensional tolerance inspection
High-speed rotation simulation
Thermal resistance and vibration fatigue tests
This ensures their sealing reliability and structural performance in dynamic environments.
Yes. Custom bearing shields can be tailored in:
Material (e.g., stainless vs. carbon steel)
Thickness
Shield lip geometry (to balance sealing and friction)
Coatings (e.g., nickel plating for corrosion resistance)
We also offer OEM & ODM bearing shield customization for motorsport suppliers.
