CoroMill® 328

A versatile cutter that can be used for many types of grooves, threads, and chamfers; machining of eccentric components, e.g. gearbox casings, and high volume assemblies, mainly on machining centers and rotating units on lathes.

Benefits

• Inserts mounted in pockets for safe and stable mounting
• Economical insert with three edges
• Large program of inserts covering circlips, slots, threads, etc.
• Low cutting forces
• Sharp precision-ground insert
• Different thread pitches possible with one tool
• Excellent for both internal and external machining

Features

• Comes in four tool holder sizes with the same insert size
• Sharp cutting edges for high quality grooves without burr
• One grade; PVD coated GC1025 for all materials
• Multiple edges for economic machining

Application

• Thread milling
• Grooving
• Circlip grooving for holes over diameter 39 mm (1.535 inches)

ISO application area

Recommendation

When programming with tool center feed, the periphery feed can be far too high. Make sure to program with radius compensation to ensure the correct feed.

Product Range

• Inserts for both circlip and chamfering in one operation, widths 1.1-5.15 mm (0.043- 0.203 inch)
• Circlip inserts, widths 1.30-5.15 mm (0.051- 0.203 inch)
• 2-8 inserts, each with three indexable cutting edges for high productivity and economy
• With Weldon (B), arbor (Q), and bore with keyway mounting (S)

Insert:

​Grooving and circlip grooving	​Circlip grooves with chamfer	Threading
		Pitch 1.5–6 mm (16-4 t.p.i) Partial profile 60° V-profile Metric 60° (full profile) UN 60°