本文件规定了圆柱蜗轮承载能力的计算公式，并涵盖了与磨损、点蚀、蜗轮偏转、断齿和温度相关的额定载荷。本文件不包括擦伤和其他故障模式。 额定载荷和设计程序仅适用于齿面滑动速度小于或等于25 m/s且接触比大于2,1的情况。对于磨损，额定载荷和设计程序仅对大于0.1 m/s的齿面滑动速度有效。本文件所选尺寸、润滑剂或材料的规则和建议仅适用于50 mm及以上的中心距离。对于小于50 mm的中心距离，方法A适用。 选择合适的计算方法需要知识和经验。本文件供经验丰富的齿轮设计师使用，他们可以对各种因素做出明智的判断。 它不适用于缺乏必要经验的工程师。见4.7。 警告-蜗轮的几何结构很复杂，因此鼓励本文档的用户确保已建立有效的工作几何结构。

This document specifies formulae for calculating the load capacity of cylindrical worm gears and covers load ratings associated with wear, pitting, worm deflection, tooth breakage and temperature. Scuffing and other failure modes are not covered by this document. The load rating and design procedures are only valid for tooth surface sliding velocities, less than or equal to 25 m/s and contact ratios greater than 2,1. For wear, load rating and design procedures are only valid for tooth surface sliding velocities which are above 0,1 m/s. The rules and recommendations for the dimensioning, lubricants or materials selected by this document only apply to centre distances of 50 mm and larger. For centre distances below 50 mm, method A applies. The choice of appropriate methods of calculation requires knowledge and experience. This document is intended for use by experienced gear designers who can make informed judgements concerning factors. It is not intended for use by engineers who lack the necessary experience. See 4.7. WARNING — The geometry of worm gears is complex, therefore the user of this document is encouraged to make sure that a valid working geometry has been established.