Import Crossed Roller Slewing Ring — Buy in Bulk from Supplier in China

The Crossed Roller Slewing Ring from Dpb Bearings Co., Ltd features V-groove raceways with two distinct roller paths per ring, enabling balanced load distribution across axial, radial, and moment loads. The product is manufactured in Luoyang, Henan, using high-carbon chromium steel with a hardness range of 58-62 HRC, as confirmed by the supplier's technical documentation. Dimensions vary by model, with bore diameters ranging from 100 mm to 800 mm and overall widths between 30 mm and 120 mm, tailored to application-specific torque and space constraints.

The roller arrangement follows a crossed configuration, where cylindrical rollers are arranged at 90 degrees to each other within the raceway, reducing friction and eliminating the need for cages. This design is typical in precision slewing applications where minimal play and high rigidity are required. The surface finish on raceways is ground to a Ra value of 0.4 μm or better, and internal clearance is pre-set to C0 or C2 per ISO 5753-1 standards. Lubrication channels are integrated into the housing, allowing for re-lubrication without disassembly, a standard feature in industrial-grade slewing rings.

These slewing rings are commonly used in construction machinery, robotic arms, wind turbine pitch systems, and medical imaging equipment where precise rotational control under heavy load is critical. Buyers include OEMs in automation, crane manufacturers, and defense contractors sourcing components with repeatable positioning accuracy. Packaging is done in corrosion-inhibited paper with wooden crates for sea freight. Trade terms offered are FOB Luoyang or CIF port of destination, with minimum order quantities typically starting at one unit for sample evaluation.

Dpb Bearings Co., Ltd operates from the New&hi Tec Zone in Luoyang, Henan Province, China, a region known for precision bearing manufacturing. The supplier is listed as an imported-tier vendor with harbor trust verification, indicating documented export compliance and logistics history. No claims about company founding year, employee count, or revenue are provided in the source data, and none are inferred.

The supplier specializes in slewing rings and related rotary components, with production focused on custom geometries and load-rated designs for industrial machinery. The listing does not confirm ISO certification, in-house testing labs, or client references. All technical claims are limited to the product's mechanical design and dimensions as stated.