Brand: NTN
NTN MU 1309 M Self-Aligning Ball Bearing (45x100x25mm) | High-Speed Brass Cage
The NTN MU 1309 M is a high-performance double-row self-aligning ball bearing engineered for applications where significant shaft deflection or mounting errors are unavoidable. This particular variant features a 45 mm bore (d), 100 mm outer diameter (D), and 25 mm width (B). The designation 'M' confirms the inclusion of a robust, one-piece machined brass cage, which offers superior material stability, heat dissipation, and reduced friction compared to pressed steel cages, making this bearing suitable for continuous operation at high speeds and under fluctuating thermal conditions. Its internal geometry is optimized to maintain low running temperatures and high rigidity, ensuring reliable service life in demanding industrial environments.
Designed primarily to compensate for inherent misalignment between the shaft and the housing, the MU 1309 M dramatically reduces premature wear and minimizes maintenance requirements. With impressive dynamic load ratings (Cr ≈ 54.0 kN), this bearing is the ideal solution for critical machinery such as large industrial fans, gearboxes, agricultural machinery, and textile equipment where operational precision and longevity are paramount. By selecting the NTN MU 1309 M, customers gain a heavy-duty, reliable component that ensures operational stability and maximizes uptime, even in harsh, dusty, or vibration-prone operating conditions.
Key Features
Machined Brass (M) Cage for high-speed performance and superior heat resistance.
Exceptional misalignment compensation (up to 3 degrees) to reduce stress and friction.
Double-row design provides high radial load capacity and excellent stability.
Optimized internal geometry for low-friction operation and increased energy efficiency.
Ideal for applications experiencing shaft deflection, common in pumps and textile machinery.
