Import Deep Groove Ball Bearing — Buy in Bulk from Supplier in Hong Kong

Sanburg Bearing offers deep groove ball bearings with precision levels designated as Z1V1, Z2V2, and Z3V3, which correspond to enhanced dimensional and rotational accuracy beyond standard industrial grades. These bearings are designed for high-speed operation with low friction, suitable for applications requiring minimal vibration and extended service life. The product line includes standard sizes from 10mm to 80mm bore diameter, compatible with common mounting configurations in motors and pumps.

The construction uses high-purity chrome steel, consistent with AISI 52100 or DIN 17230 standards, with raceways hardened to 60 to 64 HRC. The precision classes Z1V1 to Z3V3 indicate tighter tolerances on bore, outer diameter, and runout compared to ABEC-1 equivalents. Lubrication is pre-filled with synthetic grease optimized for thermal stability, and seals are non-contact rubber types to reduce torque. These features align with bearings used in aerospace and precision manufacturing, where vibration control is critical.

These bearings are sourced by manufacturers of CNC spindles, medical devices, and high-speed electric motors. Buyers typically require batches of 100 to 2,000 units, packaged in anti-static trays or vacuum-sealed pouches with individual identification. Trade terms are commonly FOB Hong Kong or CIF, with lead times of 10 to 20 days. Packaging is designed for direct integration into automated assembly lines. Buyers should confirm the precision class and seal type, as these directly impact performance in sensitive machinery.

Sanburg Bearing is registered in Kowloon, Hong Kong, and functions as a distributor of industrial bearings with a focus on precision grades. The company's profile does not state ownership of manufacturing facilities, nor does it list certifications, years in business, or employee count. It is verified as a harbor-tier supplier, but no production data, testing equipment, or supplier partnerships are disclosed. Its role appears to be sourcing and rebranding bearings to meet specific precision requirements.

The listing references precision levels Z1V1 to Z3V3, which are not ISO or ABEC standard codes, suggesting proprietary grading. There is no mention of factory audits, quality control processes, or third-party testing. Response rate and average response time are both zero, indicating no verified communication history. Buyers should treat this as a trading entity and request batch-specific documentation for precision claims before committing to large orders.