Cylindrical roller bearings use cylindrical rollers as the rolling elements instead of balls, providing a much larger contact area between the rolling elements and the raceways. This line contact design gives cylindrical roller bearings significantly higher radial load capacity compared to ball bearings of the same size, making them ideal for heavy-duty industrial applications. The LD-405 single-row cylindrical roller bearing series is also well-suited for high-speed operation due to the pure rolling motion of the rollers, which generates less friction and heat than other roller bearing types.

The LD-405 series is available in multiple design variants based on the rib configuration of the inner and outer rings. N-type bearings have two ribs on the outer ring and no ribs on the inner ring, allowing the inner ring to be removed separately and accommodating axial displacement of the shaft relative to the housing. NU-type bearings have two ribs on the inner ring and no ribs on the outer ring, with the outer ring being removable. NJ-type bearings have two ribs on the inner ring and one rib on the outer ring, enabling them to handle a moderate axial load in one direction. NUP-type bearings have two ribs on both rings plus a loose rib, providing axial location in both directions. Bore diameters range from 12mm to 120mm across the 200, 300, and 1000 series.

Manufactured from high carbon chromium bearing steel (GCr15/SUJ2), both the rings and rollers are through-hardened and precision-ground to tight tolerances. The cylindrical rollers are barrel-finished for smooth surface texture and optimized contact geometry. Cage options include machined brass for heavy-duty and high-temperature applications, stamped steel for general-purpose and high-speed use, and polyamide (nylon) for lightweight and quiet operation. Full complement designs without a cage are also available for maximum radial load capacity at lower speeds.

The separable design of cylindrical roller bearings is one of their key advantages, simplifying installation and maintenance, particularly in applications where both interference fits and frequent disassembly are required. The LD-405 series is manufactured to ABEC 1 through ABEC 5 precision standards, with higher precision grades available upon request. Typical applications include large electric motors, industrial gearboxes, pumps, compressors, machine tool spindles, rolling mills, and wind turbine gearboxes, where high radial loads and reliable performance under demanding conditions are required.