本文件规定了两个变速箱皮带轮中心调整的限值。 适用于: -扁平皮带的凸形皮带轮； -V型皮带的槽形皮带轮，单皮带、多皮带或连接皮带； -V形带肋皮带的槽形皮带轮； -同步带的齿形滑轮。

This document specifies the limiting values for the adjustment of centres of two transmission pulleys. It is applicable to: — crowned pulleys for flat belts; — grooved pulleys for V-belts, either single, multiple or joined; — grooved pulleys for V-ribbed belts; — toothed pulleys for synchronous belts.