The LD-406 self-aligning ball bearing features a unique double row design with a spherical outer ring raceway that allows the inner ring, balls, and cage to rotate freely while maintaining alignment with the outer ring. This innovative design automatically compensates for shaft deflection and housing misalignment that can occur during operation, making it an ideal solution for applications where perfect alignment is difficult to achieve or maintain. Constructed from high carbon chromium bearing steel (GCr15/SUJ2), these bearings deliver exceptional hardness, wear resistance, and fatigue life. The double row of precision-grade balls distributes radial loads evenly across both rows, while the self-aligning geometry ensures consistent contact even under misaligned conditions. Both steel and brass cage options are available to suit different speed and temperature requirements. Available in 1200, 1300, 2200, and 2300 series with bore diameters ranging from 5mm to 100mm, the LD-406 series offers versatile solutions for a wide range of industrial applications. Cylindrical bore is standard, while tapered bore options with K suffix (1:12 taper) are available for use with adapter sleeves, enabling quick mounting and dismounting on shafts. Open type is standard, with sealed options available for contaminated environments. These self-aligning ball bearings are widely used in conveyor systems, agricultural machinery, textile equipment, mining operations, and food processing lines where misalignment due to shaft deflection, mounting errors, or structural deformation is common. The combination of high load capacity, self-aligning capability, and durable construction makes the LD-406 series a reliable choice for demanding industrial environments.