Import American Outboard Round Axle Used Trailer Parts — Buy in wholesale FOB from Supplier in China

The AT series American outboard round axle from Shijiazhuang Aotong Machinery Manufacturing Co., Ltd. is a forged-steel trailer axle designed for heavy-duty commercial and agricultural trailer applications. Rated capacities span 13,000 kg to 16,000 kg across model variants AT13TW1 through AT16TWB1. Key dimensional constants include a 150 mm or 127 mm axle beam diameter, 419 mm brake size, and 1.625-37 spline configuration. Wheel fixing patterns cover both ISO and JIS standards, with 10-M22x1.5ISO and 8-M20x1.5JIS stud arrangements respectively. Total lengths ranges from 2,198 mm to 2,238 mm, with track measurements between 1,840 mm and 1,880 mm depending on variant.

Construction employs low-alloy machined spindles joined by friction welding with subsequent overall heat treatment. Axle stubs and brake hubs use mould forging rather than casting, a process that improves grain structure and fatigue resistance. The shoulder area carries a clone-shape profile intended to reduce stress concentration at the transition zone. Bearing sets specified are HM518445/10 for 13,000 kg variants, and HM518445/10 paired with HM220149/10 for 16,000 kg variants. Brake drum distances run from 1,198 mm to 1,300 mm, with brake chamber center distances of 354 mm to 428 mm. Standard wheel rim recommendations are 7.50V-20 for 13,000 kg axles and 8.00V-20 for 16,000 kg axles.

These axles serve manufacturers and rebuilders of flatbed trailers, lowbed trailers, tanker trailers, and agricultural equipment across North American and export markets. The outboard mounting configuration places brake assemblies outside the wheel hubs, simplifying maintenance access. Buyers should confirm with Shijiazhuang Aotong whether their required PCD, stud pattern, and brake specification aligns with the AT13 or AT16 series. The supplier notes capacity for custom engineering through their R&D department for volume market applications. Payment terms listed include L/C, D/P, T/T, and Western Union.

Shijiazhuang Aotong Machinery Manufacturing Co., Ltd. operates from the industrial area of Tongye Town in Luquan District, Shijiazhuang, Hebei Province, China. The company lists ISO9001:2015 and ISO/TS 16949 certifications on its product documentation, though buyers should request current certificate copies for verification. The supplier profile shows a harbor trust tier with zero recorded response rate and no average response hours data, indicating limited platform engagement history. No employee count, annual revenue, or year of establishment is stated in available records.

The company manufactures trailer axles and suspension components with a stated focus on R&D-driven customisation for regional markets. Their product line centres on American-style outboard round axles with capacities from 13,000 kg to 16,000 kg, with packaging noted as customer-specified and bulk or pallet loading of 58 sets per 20-foot container. Delivery time is quoted at 15 to 20 days depending on order volume. Buyers should independently verify production capacity, quality control documentation, and any OEM partnerships, as these details are not substantiated in the source material.