Hch bearing 6202 manufacturers

The 6202 is a deep groove ball bearing with standard dimensions of 15mm (bore) x 35mm (OD) x 11mm (width). When sourcing, you must specify the clearance level (e.g., C3 for high-speed applications), the seal type (ZZ for metal shields or 2RS for rubber seals), and the precision grade (P6 or P5). Ensure the steel used is high-carbon chromium steel (GCr15) to guarantee wear resistance and fatigue strength.

Genuine HCH bearings feature precise laser-etched markings on the outer ring and high-quality, uniform packaging with anti-counterfeit labels. You should request the supplier to provide a Certificate of Analysis (COA) and a Letter of Authorization if they claim to be an agent. Pay close attention to the vibration and noise levels (Z1V1, Z2V2, or Z3V3); authentic HCH bearings are known for their low-noise performance due to superior super-finishing processes.

The 6202 series is widely used in electric motors, household appliances, power tools, and automotive alternators. Performance benchmarks include a dynamic load rating of approximately 7.65 kN and a limiting speed of up to 20,000 RPM for grease-lubricated shielded versions. For B2B buyers, ensuring the grease type (e.g., Kyodo Yushi or Shell) matches the operating temperature of your specific machinery is critical for longevity.

Suppliers should strictly adhere to ISO 9001 for quality management and IATF 16949 if the bearings are intended for the automotive supply chain. Additionally, ensure the products are RoHS and REACH compliant, especially for exports to the EU market, to confirm the absence of hazardous substances in the lubricants and metal components.

Bearings are sensitive to moisture and physical impact. Insist on VCI (Volatile Corrosion Inhibitor) paper packaging and vacuum-sealed plastic bags to prevent rust. For bulk shipments, require palletization with shrink wrap and edge protectors. It is highly recommended to use Made-in-China.com's Secured Trading services or third-party inspections (like SGS) to verify the radial runout and noise levels before the final balance payment is made.

Bearing prices are heavily influenced by raw material costs (steel indices). For orders exceeding 5,000 pieces, you should negotiate for a volume discount of 10-15%. To ensure supply chain stability, request a rolling forecast agreement where the supplier maintains a safety stock. Standard lead times are 15-30 days; however, for customized seals or non-standard grease, allow for an additional 10 days.

Since bearings are heavy and compact, Sea Freight (LCL or FCL) is the most economical choice for large volumes. For urgent samples or small batches (under 100kg), Air Express (DHL/FedEx) is preferred but expensive. When shipping from China, ensure the supplier provides a detailed Packing List and Commercial Invoice with the correct HS Code (84821020) to avoid customs delays and ensure accurate duty calculation.