从China供应商批发进口30220 Truck Bearing From China — FOB条款

The 30220 is a single-row tapered roller bearing sized for heavy-duty truck wheel hub assemblies, specifically compatible with Mercedes-Benz (MB) and MAN commercial vehicle platforms. Linqing Huaxu Bearing Manufacturing Co., Ltd. produces this unit from GCr15 chrome bearing steel, equivalent to SUJ2 and AISI 52100 grades, a material selected for its high hardness (typical 60-65 HRC after heat treatment) and fatigue resistance under combined radial and axial loads. The bearing carries a stated warranty of 1 year or 80,000 kilometres of operation, whichever occurs first, and sample units are available for evaluation before commitment.

Tapered roller bearings of this series typically feature separable inner and outer ring assemblies, with roller elements set at an inclined angle between inner and outer raceways to handle simultaneous radial and thrust loading. The 30220 designation follows ISO 355 dimensional standards, with a nominal bore of 100 mm, outside diameter of 180 mm, and overall width of 37 mm (standard dimensions for this size class). GCr15 steel composition contains approximately 1.3-1.6% chromium with controlled carbon at 0.95-1.05%, providing the carbide dispersion needed for rolling contact fatigue life in hub applications where peak loads during braking and cornering exceed steady-state highway conditions.

This bearing serves fleet operators, aftermarket parts distributors, and commercial vehicle rebuilders sourcing direct from Chinese manufacturers. The 3-35 day delivery window suggests standard production with possible customisation or batch sizing variations. Buyers should confirm whether the stated warranty applies globally or carries geographic restrictions, and whether the 80,000 km threshold reflects laboratory testing or field-validated service intervals. For import, verify that dimensional tolerances, cone and cup geometry, and cage material match the OEM specification for the target MB or MAN axle configuration.

Linqing Huaxu Bearing Manufacturing Co., Ltd. is based in Liaocheng City, Shandong Province, China, with address listed at postal code 252600. The supplier holds a harbor trust tier on the platform, with a response rate of 0.00% and average response time of 0 hours in current data, indicating either a new listing or incomplete engagement metrics. No verified trade history, export licence details, or factory certification status is provided in the available profile information.

The listing positions the company as a manufacturer of truck bearings for European commercial vehicle aftermarket, with explicit compatibility claims for MB and MAN platforms. Buyers should independently verify production capacity, quality system certification (ISO 9001, IATF 16949 for automotive), and testing capability for tapered roller bearings. The warranty terms and material specification suggest confidence in product durability, but the absence of response data means direct enquiry is essential to assess communication reliability, technical documentation availability, and export handling experience before placing trial orders.