A Harvey Performance Company

Standard - Boring Tools - Helical Back Rake

Standard - Boring Tools
HBB / HBBM | Turning Tools

The helical grind on this helical back rake line of tooling provides ideal top rake for better chip control and freer cutting, and features a neck that's centered to shank for use in jig bore machines.

  • Designed for boring applications in bores .020" and larger
  • Polished face for improved edge retention and chip evacuation while reducing galling
  • Helical grind provides ideal top rake for better chip control and freer cutting
  • Uncoated variant ideal for plastics
  • On center neck design allows for static and live/rotating applications
  • Cylindrical shank (no set screw flat)
  • AlTiN coated option provides added lubricity and increased wear resistance in difficult to machine materials
  • CNC ground in the USA

Advanced Search

Head Width Rotational Min. Bore Diameter Maximum Bore Depth Neck Diameter Centerline Offset Shank Diameter Overall Length Uncoated AlTiN Coated Add to Cart
H - decimal equiv. DR L2 +.032"/-.000"
+.81 mm / -.00 mm
D3 +.000"/-.002"
+.00 mm / -.05 mm
F D2 (h6) L1 Tool # Price Tool # Price

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