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What is the meaning of tool holder bt30

October 11, 2022
BT30 is a taper type of tool holder. MAS BT (Japanese standard) 7:24 taper universal tool handle, usually has five standards and specifications, namely NT (traditional type), DIN 69871 (German standard), IS0 7388/1 (international standard), MAS BT (Japanese standard) and ANSI/ASME (American standard)

BT30 TOOLHOLDER

1.30 refers to the tool holder diameter model.

2. BT30 is 7:24, the maximum diameter of the taper part of the tool handle is 31.75mm, and the maximum diameter of the tool handle is 46mm

3.30 is the taper, the formula is C (taper)=(D-d)/L, where D is the diameter of the lower disc of the tool handle, d is the diameter of the upper port, and L is the height of the cone table.
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