SJMC
SERDI Reamer Special 3 stage
SERDI Reamer Special 3 stage
Carbide reamer for valve guide and valve seat
finishing in one spindle travel and/or guide
housing and seat pocket counterboring.
1- The front section C is a pilot for centering into
the unfinished diameter.
2- The section B ream the guide to size in H7
tolerance.
3- After a quick re-centering, the second pilot,
section A, drives the spindle in perfect alignment
with the newly reamed guide.
4- Keeping the spindle feeding down, the valve
seat is machined perfectly concentric to the guide
Fits any tool-holder Ø 9.52 mm / 3/8’’.
Fits on Newen shanks
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