CoroMill® 327

A versatile cutter that can be used for many types of grooves, threads and chamfers – machining of eccentric components, such as gearbox casings and high-volume assemblies, mainly in machining centers and rotating units in lathes.

Benefits

• Low cutting forces
• Sharp cutting edges for high-quality grooves without burr
• Multiple edges for highly productive and economic machining
• Large program with different shank lengths and diameters
• Large program of inserts covering circlips, o-rings, slots and threads, for instance

Features

• Weldon shank in steel and carbide with different lengths
• Solid carbide and steel shanks in several lengths for stable setups and high productivity
• Insert geometries and one grade for all materials apart from ISO H
• Secure locking of insert
• Through coolant
• Inserts with three or six teeth
• Sharp precision ground insert
• Different thread pitches possible with one tool

Application

• Pitch 1–4.5 mm (24–5 threads per inch)
• V-profile 60° (partial profile)
• Metric 60° (full profile)
• Whitworth 55° (full profile)
• UN 60°

• Circlip grooving
• Thread milling
• Groove milling
• Chamfering, both front and back
  

ISO application area

Product range

Grooving and circlip grooving	Circlip grooves with chamfer	Grooving full radius	Chamfering	Threading

Other profiles are available as special orders, please contact your Sandvik Coromant representative.

Recommendations

For optimum performance always make sure to:

• Clean the tip seat before use
• Pre-load the tip seat
• Use the right torque for mounting the insert

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.

CoroMill^® 327 is used with steel or solid carbide shanks, available in four diameters and overhangs from 74 to 160 mm (3.150–6.299 inch).

• Steel shanks for general machining when the milling conditions are good
• Solid carbide shanks to provide lower deflection, enabling longer overhangs and tougher machining with minimized vibration

Coromant Capto^® short and integrated ER collets are also available for driven units in lathes. Integrated ER collets size ER11–ER16 can also be used in sliding head machines.
Using an adapter with the Coromant EH interface on the back end enables the use of CoroMill^® 327 in many different tooling assemblies, for various component features and machining challenges. These adapters can be used together with Coromant EH cylindrical shanks and CoroChuck™ 930.