GB/T 2492-2003 in English

《GB/T 2492-2003普通磨具 交付砂轮允许的不平衡量 测量》由TC139（全国磨料磨具标准化技术委员会）归口，主管部门为中国机械工业联合会。
本标准规定了GB/T 4127-1997中各种型号的、外径等于或大于125mm、最高工作速度等于或大于16m/s的交付砂轮最大平衡量的允许值。同时也规定了砂轮的不平衡量的测量方法和验收方法。
本标准适用于交付条件下的普通磨具砂轮。

Scope

This standard stipulates the allowable value of the maximum unbalance of delivered grinding wheels of various types in GB/T 4127-1997, the outer diameter is equal to or greater than 125 mm, and the maximum working speed is equal to or greater than 16 m/s. At the same time, it also stipulates the measurement method and acceptance method of the unbalance of the grinding wheel. This standard applies to ordinary grinding wheels in the delivery condition. This standard does not apply to grinding wheels that have other regulations on balance inspection in product standards. Note 1: The values given are inherent to the grinding wheel itself and do not include any unbalance of the balance shaft or accessories that mount the grinding wheel on this shaft. All similar devices, including chucks or chuck hubs, assume that they are balanced, homogeneous, and free of geometrical imperfections. Note 2: The impact of unbalance mainly includes: - extra stress on the spindle, machine tool and fixture, - accelerated bearing wear - the resulting vibration affects the processing quality and increases the internal stress of the grinding wheel; - Increase operator fatigue.