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  軸承的噪音檢測由儀器S0910-1來完成，分為Z1、Z2、Z3、Z4級別，振動檢測由儀器BVT-1來完成，分為V1、V2、V3、V4級別

  The vibration and noise of bearings are classified as four classed as Z1,Z2,Z3 and Z4.It is measured by the instrument of S0910-1,For special requirement,it is measured by BVT-1 and classified as V1, V2, V3 and V4.The data are shown as below. Customer need mark their requirement of vibration and noise class on the order