Boring bar
A-N series Widia Manchester

Perfect for shallow grooving operations, the WIDIA TopGroove clamping system provides a
complete line of grooving geometries and an extensive grade selection to meet even the most
demanding application requirements. For increased rigidity, versatility, chip control, and carbide
grade options, the TopGroove clamping system is the proven solution.
With maximum clamping rigidity and superior versatility, TopGroove inserts employ a unique
top rake chip control geometry that efficiently evacuates chips and produces better quality parts,
faster than ever before.
Utilize this comprehensive, easy-to-use guide for the information necessary to identify, choose,
and select the appropriate cutting tools for your specific needs.
What you need to know:
• Material being machined.
• Groove depth, width, and profile.
• Application to be performed (face, OD, or ID grooving).
• Toolholder requirements (e.g., KM™, Erickson™, square shank, right/left).
TopGroove™ for Internal, External, and Face Grooving Applications
system capabilities minimum maximum
OD/ID Grooving
width .020" (0,50mm) .375" (9,53mm)
depth — .500" (12,7mm)
Face Grooving
width .125" (3,2mm) .250" (6,35mm)
depth — .500" (12,7mm)
Internal Grooving diameter .440" (11,2mm) —
Face Grooving Diameter
standard .940" (23,9mm) —
deep — —
Deep OD/ID Grooving
width .059" (1,50mm) .250" (6,35mm)
depth — .500" (12,7mm)
Deep Face Grooving
width .125"