带传动 带接头的窄V带槽轮 槽形截面为9N/J、15N/J和25N/J(有效系列

[中文适用范围]： 本国际标准规定了用于工业动力传输驱动的单根窄 V 形带和组合窄 V 形带的槽形皮带轮（槽形截面 9N/J、15N/J 和 25N/J）的主要特性。 附录A中给出了有效直径系列的一些背景信息。 注：凹槽的有效宽度被视为凹槽有效系统和相应窄V带整体标准化的基本尺寸。 [外文原描述]： This International Standard specifies the principal characteristics of grooved pulleys (for groove sections 9N/J, 15N/J and 25N/J) intended to take both single and joined narrow V-belts for industrial power transmission drives. Some background information on the series of effective diameters is given in annex A. NOTE The effective width of a groove is regarded as the basic dimension of standardization in the effective system for grooves and for the corresponding narrow V-belts considered as a whole.