Import 6316m/C4vl0241 Insulated Bearing — Buy in Bulk from Supplier in China

The 6316M/C4VL0241 is a deep groove ball bearing with an insulated inner or outer ring, designed to block electrical current and prevent arcing damage in motor applications. This model features a C4 radial internal clearance, which accommodates thermal expansion and misalignment, while the VL0241 suffix indicates a coating applied to one ring for electrical insulation. The bearing supports both radial and axial loads, with a standard dynamic load rating suitable for heavy-duty industrial use.

Constructed from high-carbon chromium steel typical for this category, the bearing undergoes heat treatment to achieve a hardness of 58-65 HRC, standard for deep groove ball bearings. The insulated coating is a ceramic or oxide layer, typically 100-200 micrometers thick, applied to one ring to provide a dielectric barrier. The bearing’s deep groove geometry allows for high-speed operation, with grease lubrication standard for its sealed variants, while open types require external lubrication.

This bearing is specified for electric motors, generators, and traction systems where stray currents can cause premature failure. Industrial buyers in automotive, renewable energy, and manufacturing sectors use it to extend equipment life in variable frequency drive applications. The supplier, based in Bachalu Industrial Park, Linqing, Shandong, offers the product with flexible packaging and FOB or CIF shipping terms, though MOQ and certifications should be confirmed directly as they are not stated in the listing.

Linqing Nine Star Bearing Science & Technology Co., Ltd. operates from Bachalu Industrial Park in Linqing, Liaocheng, Shandong Province, China. The company is classified as an imported-tier supplier with a harbor trust tier, indicating a baseline level of verification for export capabilities. Its address places it in a recognized industrial hub for bearing manufacturing, though no additional details on production scale or certifications are provided in the listing.

The supplier’s profile shows a response rate of 0.00%, with no recorded average response time, suggesting limited engagement or recent activity on the platform. The description emphasizes the bearing’s electrical insulation and industrial applicability but does not specify certifications, MOQ, or lead times. Buyers should verify these details directly, as the listing relies on standard assumptions for the product category rather than supplier-specific guarantees.