Boring Solutions
Accurate and cost effective, Parlec’s Boring Solutions Provide .0001" (.002mm) adjustment precision for a variety of bores along with advanced adjustable twin bore roughing systems. Precision modular component design allows for reduced inventory and stock delivery while ISO/ANSI inserts reduce production costs.
Products
Calculating Back Bore
Back Bore Diameter is the same as range in the charts page 26 and 27.
Minimum Through Bore Diameter is calculated: (PC Diameter/2) + (Back Bore Diameter/2) + minimal clearance (.010)
Overhang of insert from boring bar connection should be measured to make sure there is enough clearance. Calculate (Back Bore Diameter – Through Bore Diameter)/2

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