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Home > News > Is the angle of ISO toolholder the same as that of BT toolholder

Is the angle of ISO toolholder the same as that of BT toolholder


1. ISO toolholder standard refers to the standard formulated by the international organization for Standardization (ISO). In October 1946, leaders from 25 national standardization organizations met in London to discuss the establishment of an international organization for standardization. They called the New Organization ISO, the abbreviation of international organization for standardization. The meeting unanimously adopted the ISO constitution and rules of procedure. On February 23, 1947, ISO began to operate. Its central office is located in Geneva, Switzerland. China is both the sponsor and the first member country.

2. BT toolholder: taper handle for machining center machine tool (with manipulator clamping groove) manufactured by Japanese standard mas403; ST refers to taper handle handle for CNC machine tool manufactured according to gb3837 (without manipulator clamping groove).

The angles of ISO toolholder and BT toolholder are different. There are also professional machine tools and customized toolholder angles. The following is a comparison diagram of taper shank specifications and dimensions between ISO toolholder and BT toolholder.

tool holder

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