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CoroMill® 490

First choice for general and repeated shoulder milling

Select the right insert geometry

Light (-L)

  • Extra positive
  • For light machining
  • Low cutting forces
  • Low feed rates

Medium (-M)

  • First choice geometry
  • Medium feed rates
  • Medium operations to light roughing

Heavy (-H)

  • Reinforced cutting edge
  • Heavy machining
  • Highest edge security
  • High feed rates

How to choose the right pitch

When choosing the most suitable number of effective cutting edges, zc, for the operation, it is essential to consider the pitch (distance between the cutting edges).

Learn more

Select the right tool holding

Tool mounting has the greatest influence on the milling result. The larger the cutting depth, the more important the size and stability of the coupling become, since the radial forces are considerable when using shoulder face mills, particularly long edge milling cutters.

Cutting depth

Insert size 08

  • Max cutting depth: 5.5 mm (0.216 inch)
  • Recommended cutting depth: 4 mm (0.157 inch)

Insert size 14

  • Max cutting depth: 10 mm (0.394 inch)
  • Recommended cutting depth: 7 mm (0.276 inch)

View more instructions

Torque value

Insert screw:

1.2 Nm (10 in-lbs) (IP8)
3.0 Nm (26 in-lbs) (IP15)

Application tips

Application checklist and hints

Application checklist and hints

What to consider when performing a shoulder milling operation? Find some useful tips and tricks here.

Chip formation

Chip formation

Successful chip formation and chip evacuation is the key to high-quality milling operations. Learn more about how to form the perfect chips, and don’t forget the golden rule: Thick to thin.

Cutter position

Cutter position

Each time a milling edge enters a cut, it is subjected to a shock load. The right type of contact between edge and material at the entry and also at the exit of a cut must be considered for successful milling.

Entering the component

Entering the component

Shoulder milling often uses a low radial engagement, therefore it is important to consider feed per tooth (fz) vs. maximum chip thickness (hex).
Calculating cutting parameter according to right hex value will ensure good cutting action with better surface quality and tool life.

Recommendations

Cutter body selection

●

Difficult conditions

 

L

Limited stability and power
Deep full-slotting operations
Lowest cutting forces

◐

Average conditions

 

M

General purpose



○

Good conditions

 

H

Short chipping materials
Heat resistant materials
Edging operations



First choice insert

Roughing M-PH 4340 M-MM 1040 M-PH 3330 E-ML H13A M-MM S40T M-PM 1010
Medium M-PM 4330 E-MM 1040 M-KM 3330 E-ML H13A E-MM S30T M-PM 1010
Finishing M-PL 1130 E-ML 1040 M-KL 1020 E-ML H13A E-ML S30T M-PL 1010
P M K N S H
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