Deep groove ball bearings are the most widely used type of rolling bearing, featuring a simple design with deep raceway grooves on both the inner and outer rings that closely match the curvature of the balls. This design enables them to handle radial loads as well as moderate axial loads in both directions at high speeds. The LD-401 series is manufactured from high carbon chromium bearing steel (GCr15/SUJ2), which provides excellent hardness, wear resistance, and fatigue life for demanding industrial applications.

The LD-401 bearing range covers the 6000, 6200, and 6300 series, representing light, medium, and heavy-duty configurations respectively. The 6000 series offers the smallest cross-section for space-constrained applications, the 6200 series is the most versatile general-purpose option, and the 6300 series provides the highest load capacity with wider raceways and larger balls. Bore diameters range from 3mm miniature bearings up to 100mm industrial sizes, with outer diameters from 7mm to 215mm and widths from 3mm to 47mm.

Multiple seal and shield configurations are available to suit different operating environments. Open-type bearings are suitable for well-lubricated enclosed housings, ZZ metal shields provide contactless protection against larger contaminants while allowing higher speeds, and 2RS rubber seals offer superior contamination protection with low-friction contact seals. Additional options include 2Z double shields and various seal colors. Cage materials include nylon for quiet high-speed operation, steel for high-temperature strength, and brass for heavy-duty shock resistance.

Available in ABEC precision grades 1 through 5, the LD-401 series meets the requirements of applications ranging from general industrial machinery to precision equipment. Standard lubrication options include lithium-based grease for general use and high-temperature greases for specialized applications. All bearings undergo strict quality control including dimensional inspection, noise testing, and rotational accuracy verification before shipment.