本SAE推荐规程为卡车、公共汽车和拖车应用中使用的车轮、轮毂、轮辋及其部件建立了统一的工程术语。本术语和附图旨在定义功能性卡车车轮、轮毂和轮辋设计。有关特定于乘客型盘式车轮的术语，请参阅SAE J1982。当与SAE J393不同时，国际标准（ISO）术语显示在括号中。

This SAE Recommended Practice establishes uniform engineering nomenclature for wheels, hubs, rims, and their components used in truck, bus, and trailer applications. This nomenclature and accompanying drawings are intended to define functional truck wheel, hub, and rim designs. For nomenclature specific to ¿¿¿passenger-type¿¿¿ disc wheels, refer to SAE J1982. The International Standard (ISO) nomenclature is shown in parentheses when different than SAE J393.