ISO Tool Holder Standard

July 11, 2019

Is07388/1 is the international standard. ISO standards refer to the standards formulated by the International Organization for Standardization (ISO). The predecessor of ISO is the International Standardization Association (ISA). ISA was founded in 1926 (the third joint meeting of representatives of seven standardization bodies of the United States, Britain and Canada in 1926 decided to establish the International Standardization Association, which was established in 1928). The outbreak of World War II forced ISA to stop working. After the war, the environment provided conditions for industrial recovery. In October 1946, leaders from 25 national standardization agencies met in London to discuss the establishment of the International Organization for Standardization, which was called ISO. The meeting unanimously adopted the ISO charter and rules of procedure. On February 23, 1947, ISO came into operation. The central office of ISO is located in Geneva, Switzerland. China is both the initiator and the first member country.
NT TOOL HOLDER

The universal tool holder with taper of 7:24 usually has five standards and specifications, namely NT (traditional type), DIN 69871 (German standard), IS07388/1 (international standard), MAS BT (Japanese standard) and ANSI/ASME (American standard).
The installation size of ISO 7388/1 (IV or IT) tool holder is not different from that of DIN 69871, but because the D4 value of ISO 7388/1 tool holder is smaller than that of DIN 69871 tool holder, it is no problem to install ISO 7388/1 tool holder on DIN 69871 taper hole machine tool, but it is not a problem to install DIN 69871 tool holder in ISO 7388/1 tool holder. The interference may occur on the machine tool.

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Mr. jiames.wang

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