HOFNEX

CNMG Steel Semi-Finishing Insert

80° rhombic negative-geometry insert with a hole. Available with three nose radii and two CVD grades for steel machining; select by the current model and operating conditions.

Model format

Geometry-chipbreaker HOFNEX grade; the full designation is retained when no separate chipbreaker is listed.

Chipbreaker and grade

The chipbreaker identifies chip-control geometry; the grade identifies the material/coating configuration. Select by the listed application.

Specification selection

Check dimensions, workpiece material and machining stage. For threading, also check thread form, pitch and internal/external use.

Model and specification examples

• CNMG120404-HPM HP9210 — Nose Radius RE 0.4 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm
• CNMG120404-HPM HP9220 — Nose Radius RE 0.4 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm
• CNMG120408-HPM HP9210 — Nose Radius RE 0.8 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm
• CNMG120408-HPM HP9220 — Nose Radius RE 0.8 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm
• CNMG120412-HPM HP9210 — Nose Radius RE 1.2 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm
• CNMG120412-HPM HP9220 — Nose Radius RE 1.2 mm, Inscribed Circle IC 12.7 mm, Thickness S 4.76 mm, Hole Diameter D1 5.16 mm, Cutting-Edge Length LE 12.9 mm