Import Bearings — Buy in wholesale FOB from Supplier in China

Dalian Huayang Jinggong Bearing Manufacturing Co. Ltd. produces SL04 series sealed double-row cylindrical roller bearings designed to sustain heavy radial loads in material handling, construction machinery and rolling mill applications. The SL0450 designation indicates a 50mm bore within a series where bearings are supplied as complete assemblies with integral inner rings that are split after final machining then clamped post-installation. The outer ring carries a solid central flange and two annular locating grooves, enabling the bearing to absorb bidirectional axial loads while the wide radial plane resists overturning moments. Sealing options include single or double rubber seals with factory-filled grease for reduced maintenance operation.

The bearing is manufactured from high-strength chromium steel, specifically GCr15 (AISI 52100), the standard material for cylindrical roller bearings requiring fatigue resistance under cyclic loading. The standard cage is a drilled-pocket finger-type bronze design, offering good wear properties and roller guidance at elevated temperatures. Double-row cylindrical roller bearings of this class typically accommodate radial loads approximately 1.6 to 2.0 times greater than equivalently sized single-row bearings, with standard speed factors dependent on lubricant and cooling. The split inner ring design facilitates mounting on shafts where end access is restricted, though it requires precise clamp-ring torque to maintain preload and avoid ring creep.

Applications extend to gearboxes, grass mowing drums, rolling mill stands and machine tool spindles where rigidity and load capacity outweigh the need for angular misalignment accommodation. Importers should note that these bearings do not self-align; adjacent structure deflection must stay within 0.001 to 0.002 radian depending on series width. The supplier offers interchangeability of inner rings without rollers against competitor components, a consideration for maintenance departments holding mixed inventories. Confirm seal configuration, grease type and operating temperature range with the supplier, as these dictate maintenance intervals and suitability for outdoor or contaminated environments.

Dalian Huayang Jinggong Bearing Manufacturing Co. Ltd. operates from Wawo Industrial Park in Wafangdian City, Liaoning Province, China, placing it within the same regional bearing manufacturing corridor as other established producers. The supplier carries a Harbor trust tier but shows a 0.00 percent response rate with no recorded average response hours, indicating limited or unmeasured buyer engagement through the platform. Its product specialisation centres on cylindrical roller bearings, specifically the SL04 sealed double-row series with emphasis on heavy-load industrial applications rather than generic commodity bearings.

The company profile does not state founding year, employee count, annual revenue, export percentage, named clients or verified certifications. Factory floor area and production capacity are unpublished. Buyers must independently verify quality system registration, inspect factory facilities if feasible, and request reference customers for the SL04 series before committing to volume orders. The technical description suggests engineering familiarity with bearing design and application requirements, but this must be validated through sample evaluation and audit.