MR115-ZZ Miniature Shielded Ball Bearing | 5×11×4 mm | Ultra-Low Friction for Micro-Mechanisms

The MR84-ZZ is a high-performance, single-row miniature ball bearing engineered for applications that require a perfect equilibrium between a small footprint and structural rigidity. Featuring a 4x8x3 mm geometry, this component is equipped with dual non-contact metal shields (ZZ) that protect the internal raceways from larger debris while ensuring the lowest possible starting torque. Its balanced width-to-diameter ratio makes it an essential component for high-speed micro-motors and precision encoders where dynamic stability and low heat generation are critical for long-term reliability.

The MR84-2RS is a premium-grade, single-row miniature ball bearing built for mechanical systems that demand strict environmental shielding alongside structural compactness. Featuring twin synthetic rubber contact seals (2RS), this 4x8x3 mm component establishes a robust defense against moisture, particulate matter, and operational debris. Its highly efficient architecture is ideal for stepper motors, medical instruments, and consumer electronics, guaranteeing that the internal raceways stay uncontaminated and the factory-applied grease remains locked in for long-lasting, maintenance-free operation.

The MR74-ZZ is a high-performance miniature ball bearing crafted for ultra-compact systems where frictionless rotation and foundational particulate defense are paramount. Fitted with dual non-contact pressed steel shields (ZZ), this 4x7x2.5 mm component creates a reliable safeguard against large dust particles while eliminating the drag associated with rubber seals. Its low-friction profile is specifically engineered for high-speed micro-motors, precision instruments, and robotics, ensuring internal raceways are kept clean and the specialized lubricant is securely housed for an extended operational lifespan.

The MR74-2RS is a precision-engineered miniature bearing designed for applications where high-level sealing is required within an ultra-slim footprint. Equipped with dual synthetic rubber contact seals (2RS), this 4x7x2.5 mm component creates an airtight barrier that effectively blocks out moisture, fine dust, and liquid splashes. Its compact profile is specifically optimized for outdoor electronics, waterproof servos, and medical handpieces, ensuring that the internal components remain lubricated and shielded even in contaminated or humid operating conditions.

The MR2010-ZZ is a specialized single-row deep groove ball bearing designed for applications that demand a precise balance of space efficiency, low rotational friction, and reliable shielding. Measuring 10x20x6 mm, this component is fitted with dual pressed steel shields (ZZ) that form a highly effective barrier against dust, metallic debris, and other dry particulates. Unlike rubber-sealed bearings, the non-contact metal shields enable exceptional high-speed performance by eliminating seal drag, making it an optimal choice for high-RPM electric motors, bicycle hubs, and precision mechanical assemblies where factory-applied grease must be safely contained.

The MR166-ZZ is a premium single-row miniature ball bearing designed for applications demanding frictionless rotation and reliable defense against dry particulate matter. Fitted with dual pressed steel shields (ZZ), this 6×16×5 mm unit excels at keeping internal factory lubrication locked in while deflecting airborne contaminants. Unlike rubber-sealed variants, the non-contact metal shields ensure absolute minimal torque resistance, making it an optimal solution for high-RPM mechanisms such as 3D printer extruders, micro-stepping motors, and precision office electronics where operational speed and heat dissipation are primary concerns.

The MR115-ZZ is a high-performance miniature deep groove ball bearing specifically constructed for applications where unhindered rotational speed and strict space limitations are top priorities. Featuring dual pressed steel shields (ZZ), this 5×11×4 mm component effectively guards the internal raceways against dry particulates and dust while retaining the factory-applied lubricant. Because the metal shields do not make physical contact with the inner ring, this bearing delivers zero-drag operation, making it an exceptional choice for rapid-motion assemblies like RC vehicles, fishing reels, and delicate micro-motors.

The MR115-2RS is a robust single-row miniature ball bearing engineered specifically for high-performance applications where exposure to external contaminants is a constant challenge. Outfitted with dual synthetic rubber contact seals (2RS), this 5×11×4 mm component provides a formidable barrier against moisture, fine grit, and liquid splashes. Unlike shielded versions, the reinforced rubber seals maintain a light-contact interface with the inner ring, ensuring that the internal factory-grade lubricant remains securely sealed within the raceways, significantly extending the service life of the bearing in outdoor or non-sterile environments.