The MR149 is a high-performance, metric-series miniature deep groove ball bearing specifically engineered for applications requiring a large bore-to-outside-diameter ratio in a slim-section profile. With a 9mm inner diameter and a narrow 3mm width, this bearing offers a unique solution for rotating components that need to pass over larger shafts without increasing the overall housing volume. Whether configured as open or shielded, the MR149 provides exceptionally low starting torque and high-speed stability, making it a cornerstone for modern mechatronics and precision hardware.

The MR149-ZZ is a high-performance metric series miniature bearing engineered for applications that demand a balance of compact design and robust load-carrying capacity. With a 9mm bore diameter, this bearing is slightly larger than micro-series models, providing enhanced stability and radial support for small-scale rotating shafts. The dual metallic shields (ZZ) ensure that the internal raceways remain protected from dust and debris while maintaining the low-friction characteristics essential for high-speed efficiency.