从China供应商批发进口7210becbm Bearings — FOB条款

The 7210BECBM from Shandong Kaili Bearings is a single-row angular contact ball bearing with a 50mm bore, 90mm outer diameter, and 20mm width. The 40-degree contact angle directs combined radial and axial loads toward the outer raceway shoulder, making it suitable for paired mounting in duplex arrangements to handle bidirectional thrust. The machined brass cage (suffix M) offers dimensional stability at peripheral speeds where pressed steel cages might exhibit thermal growth. This configuration is standard for electric motor support bearings, vertical pump shafts, and precision gearbox spindles where moderate speed and controlled axial play are required.

Material specification centres on chrome steel (GCr15 / SUJ2) for rings and rolling elements, with through-hardening to approximately 60 HRC on raceways. The brass cage (CuZn40Pb2 or equivalent) is machined rather than stamped, reducing unbalance and cage-pocket wear at higher speeds. For the 7210BECBM designation, the B suffix denotes the 40-degree contact angle, E indicates the enhanced internal design with optimised raceway geometry for higher load capacity, CB signifies universal pairing capability (tandem, back-to-back, or face-to-face), and M confirms the brass cage. Typical dynamic load rating (C) for this geometry is approximately 42.5kN, with a static load rating (C0) near 32.5kN, though buyers should request Shandong Kaili's certified test data for confirmation.

Primary applications include machine tool spindles, automotive powertrain test rigs, centrifugal pumps, and agricultural gearbox shafts. The bearing's suitability for paired mounting makes it economical for OEMs who need configurable thrust capacity without stocking separate single-direction and double-row variants. B2B buyers in industrial equipment and automotive component manufacturing source this size from Chinese manufacturers for replacement and aftermarket channels. When approaching Shandong Kaili, buyers should confirm whether the BECBM variant is stocked with P5 or P4 tolerance grades, and whether the brass cage is solid or window-type, as this affects high-speed performance and oil flow characteristics.

Shandong Kaili Bearings Co. Ltd. is based in China. The supplier address field contains only formatting characters and the country name, with no city, province, or specific location provided beyond Shandong province implication in the company name. The trust tier is listed as harbor. Response rate is recorded at 0.00% with zero average response hours, indicating no response history is available through the platform. The supplier self-identifies as a professional bearing factory with multiple brands, claiming good quality, reasonable price, and complete logistics services.

No verifiable data is provided on factory floor space, year of establishment, number of employees, annual output volume, specific brand names held, quality certifications (ISO 9001, ISO/TS 16949), or named domestic or international clients. The claim of many brands could refer to licensed production, OEM white-label supply, or distribution arrangements, but this requires direct clarification. Buyers should independently verify manufacturing capability through factory audit, request sample bearings for dimensional and metallurgical testing, and confirm whether Shandong Kaili operates its own heat treatment and raceway grinding lines or sources these processes. The absence of response metrics means direct email or telephone contact should be initiated promptly to gauge technical competence and English-language support.