NPK GH1 - Main Body Bore Dimensions

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MAIN BODY BORE REPAIR
MAIN BODY BORE DIMENSIONS
GH SERIES HAMMERS
MODEL
d5
MAIN BODY
BORE – NEW
d6
MAIN BODY
BORE – MAX*
d7
MAIN BODY
LENGTH
BALL
HONE
SIZE
PART
NUMBER
INCH MM INCH MM INCH MM
GH06 2.954 75.04 2.965 75.30 14.97 380.3 N/A N/A
2.953 75.00 14.96 380.0
GH07 2.954 75.04 2.965 75.30 14.97 380.3 N/A N/A
2.953 75.00 14.96 380.0
GH1 3.545 90.04 3.555 90.30 18.12 460.3 4” T050-7600
3.543 90.00 18.11 460.0
GH2/GHS2 3.939 100.04 3.949 100.30 18.52 470.3 4” T050-7600
3.937 100.00 18.50 470.0
GH3 4.529 115.04 4.539 115.30 20.49 520.5 4-1/2” T050-7605
4.528 115.00 20.47 520.0
GH4 4.923 125.04 4.933 125.30 24.82 630.5 6” T050-7610
4.921 125.00 24.80 630.0
GH6 5.907 150.04 5.917 150.30 27.58 700.5 6” T050-7610
5.905 150.00 27.56 700.0
NOTE: *Body bore maximum I.D. is not to exceed .010” (.25 mm) above standard
(new) dimension. If bore is at or above this dimension, call the NPK Service
Department at 1-800-225-4379.