传动和输送机用双节距的精密滚子链、附件和相关链轮

[中文适用范围]： 本国际标准规定了适用于动力机械传输和输送机的双节距精密滚子链及其相关链轮的要求。 它涵盖尺寸、公差、长度测量、预载和最小拉伸强度。 这些双节距链条源自 ISO 606 涵盖的一些短节距传动精密滚子链，具有某些通用尺寸，但具有双节距。 这些链条旨在在速度和传输功率方面比它们所源自的基础链条在不太苛刻的条件下使用。 本国际标准主要适用于 5 至 75 齿（含中间齿数 5 1/2 至 74 1/2）的链轮。 优选的齿数为 7、9、10、11、13、19、27、38 和 57。 [外文原描述]： ISO 1275.2006 specifies requirements for double-pitch precision roller chains suitable for the mechanical transmission of power and for conveyors, together with those for their associated sprockets. It covers dimensions, tolerances, length measurement, preloading and minimum tensile strengths. These double-pitch chains have been derived from some of the short-pitch transmission precision roller chains covered by ISO 606 having certain common dimensions but of double the pitch. The chains are intended for use under less onerous conditions with respect to speed and power transmitted than are the base chains from which they are derived. ISO 1275.2006 primarily applies to sprockets with 5 to 75 teeth inclusive (with intermediate numbers of teeth 5 and a half to 74 and a half inclusive). The preferred numbers of teeth are 7, 9, 10, 11, 13, 19, 27, 38 and 57.