Cheap wza spherical roller bearing21308 mbk/w33

The WZA spherical roller bearing 21308 MBK/W33 is a single-row, self-aligning bearing with a tapered bore and cylindrical outer ring, designed for heavy radial and moderate axial loads. It has a bore diameter of 40.000 to 40.001 mm and an outside diameter of 90.000 to 90.001 mm, with a width of 23 mm, as stated in the product data. The bearing features a brass cage and is sealed with contact rubber lips on both sides to retain lubricant and exclude contaminants.

The bearing is manufactured from high-carbon chromium steel, typically conforming to AISI 52100 or DIN 100Cr6 standards, which ensures high hardness and fatigue resistance under cyclic loading. The MBK designation indicates a machined brass cage, while W33 denotes an external lubrication groove and three lubrication holes in the outer ring. These features are standard in industrial-grade spherical roller bearings used in high-vibration environments, though the supplier does not specify heat treatment or surface finish details.

This bearing is commonly used in gearboxes, conveyor systems, and mining equipment where misalignment and shock loads are common. Buyers in the construction, agriculture, and heavy machinery sectors source it for maintenance and replacement applications. Trade terms offered include FOB Qingdao and CIF, with packaging in single-piece polyethylene sleeves inside cartons. Minimum order quantities and lead times are not specified and must be confirmed directly with the supplier.

Jinan Global International Trade Co., Ltd. is a trading company based in Jinan, Shandong Province, China, with a physical address listed at 12 Qilihe Road, Licheng District. The company is registered as an importer and exporter of mechanical components and is verified by a harbor trust tier, indicating it has passed basic trade documentation checks. There is no public information on manufacturing capability, years in operation, or employee count.

The company does not claim to manufacture bearings but sources them from third-party producers. It does not list certifications such as ISO 9001, nor does it provide test reports or material certificates. Response rate and average response time are not available on the listing, suggesting limited customer service engagement. Buyers should treat this as a sourcing intermediary, not a direct manufacturer.