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Khoan sâu 16D, 20D, 25D, 30D - Solid carbide HPC deep hole drill 123588, 123590, 123593, 123595

Khoan sâu 16D, 20D, 25D, 30D - Solid carbide HPC deep hole drill 123588, 123590, 123593, 123595

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Version:

Spiral fluted, with 6 guide chamfers and internal cooling channels. New generation of high performance deep hole drills in the HPC range. With 135° point angle and special h7 cutting edge tolerance for optimum generation of a deep hole. High roundness and alignment accuracy of the deep hole.

Recommendation:

Maximum drilling depth:
clamping slot length (see table) less 1.5×nominal ⌀.

Note:

For process reliability when using the 16×D deep-hole drill, an initial centre drilling with No. 121068 – 121130 or 4×D pilot drilling operation with pilot drill No. 122606 is necessary. For deep holes greater than 20×D, a 6×D pilot hole with pilot drill No. 122606 is absolutely essential.
The generation of a pilot hole improves the process reliability. See also pages 112/113.

 

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