NPK GH1 - Standard Length for Npk Tools

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STANDARD LENGTH FOR NPK TOOLS
d23 = Length of tool from top to bottom.
d22 = Length of tool exposed from bottom of tool bushing to end of tool.
d16 = Diameter of bearing surface of tool.
NEW TOOL
DIAMETER (d16)
NEW TOOL
LENGTH (d23)
NEW WORKING
LENGTH (d22) MODEL
INCH MM INCH MM INCH MM
GH06 1.63 41.4 19.3 490 12.2 311
GH07 1.83 46.6 20.7 527 13.1 333
GH1 2.23 56.6 23.6 599 13.6 346
GH2/GHS2 2.58 65.6 25.5 648 14.4 367
GH3 2.98 75.6 28.5 725 16.1 408
GH4 3.37 85.6 33.0 838 18 458
GH6 4.16 105.6 38.0 966 19.7 500
NOTE:
Minimum tool length is determined by the depth of material penetration that is required.