The SW MR 148 ZZ miniature deep groove ball bearing is engineered for applications demanding high rotational speed and exceptional precision within restricted operating envelopes. Constructed from high-carbon chrome steel (52100), this bearing delivers superior hardness and fatigue resistance, ensuring extended service life even under dynamic load conditions. The MR 148 ZZ features a non-contact dual metal shield ('ZZ') configuration, which protects the internal raceways and high-quality grease from environmental contaminants like dust and debris, while minimizing friction and heat generation compared to full-contact seals. This design maintains optimal internal clearance (C3 tolerance standard) for robust operation in varying temperature environments.
Designed specifically for critical instrumentation, small DC motors, robotics, and precision drive systems, the MR 148 ZZ bearing provides the reliability required to minimize downtime in sensitive industrial machinery. Its pre-lubricated, maintenance-free design reduces ongoing operational costs and complexity. Choosing the SW brand guarantees certified ABEC-3 precision standards, translating directly into reduced vibration, lower noise levels, and efficient power transmission. Invest in SW miniature bearings for maximum operational throughput and sustained component durability.
Key Features
Dual Metal Shields (ZZ) for enhanced protection against contaminants and reduced friction.
Engineered for high-speed operation up to 45,000 RPM in grease-lubricated systems.
