Hole machining
Drilling Holder Denomination System
HP 1
2D 2
255 3
S32 4
S07 5
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1 HP Product series
HP: High productivity drilling body series
Length-diameter ratio
2 2D
2D, 3D, 4D,
3 255 Tool diameter
255--25.5mm, 500--50mm
4 S32 Shank diameter
S20=20mm
S25=25mm
S32=32mm
S40=40mm
Insert shape and edge length
5 S07
The insert shape is "S", the cutting edge length is 7mm
345
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