Import 6302-6315 Zz/2rs Deep Groove Ball Bearings — Buy in wholesale FOB from Supplier in China

The 6302-6315 series deep groove ball bearings from Cixishi Chengben Bearing Co., Ltd. cover bore sizes from 15 mm to 75 mm, with outer diameters ranging from 42 mm to 160 mm and widths from 13 mm to 37 mm. These are single-row radial bearings manufactured from chrome steel (GCr15 / SUJ2), available in open, ZZ (metal shield), or 2RS (rubber seal) configurations to suit different contamination and lubrication requirements. The series spans ISO 15 standard dimensions, with each model rated for the dynamic and static load capacities standard for its size class in general machinery applications.

Material specification centres on high-carbon chromium bearing steel (GCr15 equivalent to AISI 52100, or SUJ2 in JIS designation), with through-hardening to 58-65 HRC typical for this grade. The ZZ variant employs steel shields pressed into recesses in the outer ring, providing dust exclusion with minimal torque increase, while the 2RS variant uses nitrile rubber or fluorocarbon seals contacting the inner ring for superior contaminant exclusion and grease retention. Precision grades from P0 to P4 and radial clearance classes from C0 to C5 are offered, allowing selection for applications from general industrial equipment to moderate-precision electric motor and automotive auxiliary drives. Vibration grades Z1-Z4 and V1-V4 are available, with higher grades indicating lower noise and smoother running for sensitive applications.

These bearings are widely specified for electric motors, pumps, gearboxes, agricultural machinery, and general industrial equipment where radial and combined radial-axial loads occur. The 6302-6315 size range covers fractional horsepower motors through to medium-duty industrial drives. Buyers in the European, American, and Australian markets, which the supplier identifies as their main destinations, should confirm the specific precision grade, clearance class, and seal material required for their application. The stated minimum order quantity is 1000 pieces per model, though negotiation may be possible for mixed-model orders. Buyers should also confirm lubricant type and fill quantity, as these are not specified and affect service life in the intended duty.

Cixishi Chengben Bearing Co., Ltd. is located in Henghe Industrial Area, Cixi, Ningbo, Zhejiang Province, China, with postal code 315318. Cixi is a recognised cluster for bearing manufacturing in China, with extensive supply chain infrastructure for steel, heat treatment, and precision machining services. The company holds a 'harbor' trust tier, indicating basic profile presence without advanced verification. Their response rate is recorded at 0.00 percent with zero average response hours, suggesting either no recent inquiry activity or that the platform's response tracking is not active for this account. Buyers should initiate contact early and consider alternative communication channels if platform messaging goes unanswered.

The supplier's stated main markets are European, American, and Australian territories, and they claim to operate under an ISO 9000 quality system, though no certificate number or accreditation body is provided for independent verification. They emphasise competitive positioning on price and quality equivalence, with stated commitments to short delivery times and pre- and post-sales support. No specific revenue figures, employee counts, factory floor area, or named OEM clients are disclosed. The company offers custom packaging at client request, with standard industrial packaging as the default. Buyers are advised to request a copy of their current ISO 9001 certificate, factory audit report, or reference customer contacts in their target market to validate quality system claims before committing to volume procurement.