Import 61808 Deep Groove Ball Bearing — Buy in Bulk from Supplier in China

The 61808 deep groove ball bearing from Jinan Dingsai Bearing Co., Ltd. carries a 40 mm bore, 52 mm outer diameter, and 7 mm width, with a listed weight of 0.034 kg. It is manufactured from high-grade bearing steel and chrome steel, configured as a single-row open or shielded design depending on suffix, and intended for industrial machinery requiring combined radial and axial load capacity. The thin-section proportions suit applications where space and weight are constrained relative to load requirements.

Bearing steel for this size range typically achieves 61-65 HRC surface hardness after martensitic quenching and low-temperature tempering, with core hardness maintained to support hoop stresses from press fits. The 61808 series falls into the 618 thin-section range, where the cross-section remains constant across varying bore sizes, allowing designers to use the same housing dimensions for multiple shaft diameters. Standard cage materials are stamped steel or machined brass, with the latter preferred for higher speeds or marginal lubrication conditions.

Primary application sectors include automotive auxiliary drives, small electric motors, and conveyor systems where the bearing must accommodate moderate misalignment from housing deflection. Buyers are typically OEMs, aftermarket distributors, and maintenance workshops in general machinery sectors. For procurement, confirm whether the unit is supplied with shields, seals, or open configuration, as the source description does not specify the closure type, and whether the stated 0.034 kg weight includes or excludes packaging.

Jinan Dingsai Bearing Co., Ltd. is located at No. 28293, West Jingshi Road, Jinan 250022, Shandong Province, China, placing it within the Shandong bearing manufacturing cluster that supplies both domestic and export markets. The supplier holds an imported tier designation alongside a harbor trust tier, suggesting some combination of verified import activity or cross-border trade history, though the specific criteria are not disclosed. The response rate shows 0.00 percent with zero average response hours, so direct communication channels should be tested before relying on platform messaging alone.

No factory size, employee count, annual turnover, or specific client references appear in the source data. Claims of ISO and SGS certifications are mentioned in the source description but without certificate numbers, scopes, or accreditation bodies, so these should be treated as unverified until documentation is supplied. The company profile does not indicate whether it operates as a manufacturer, trader, or hybrid, so buyers should clarify this distinction to understand whether production control or sourcing flexibility is the stronger capability.