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CoroMill® MH20

High feed pocket milling

Instructions

Maximum depth of cut (APMX)

The maximum depths of cut are:
IC06: 0.8 mm (0.031 inches)
IC08: 1.3 mm (0.051 inches)

Ramping angle (RMPX)

The ramping angles are:
IC06: 3.6°–10.1°
IC08: 1.7°–10.7°

Programming radius (REEQ)

The programming radii are:
IC06: 2.0 mm (0.079 inches)
IC08: 2.5 mm (0.098 inches)

Marking of geometries

The inserts have a prominent marking to differentiate the geometries.

Application tips

Three keys to successful ramping

Three keys to successful ramping

Ramping is an efficient way to approach the workpiece when machining pockets. There are three key considerations that need to be correctly applied for successful ramping operations.

Plunging

Plunging

When plunge milling you should use an extra-close pitch to ensure multi-tooth engagement. Get more important plunge milling tips for successful plunge milling operations.

CoroPlus® Tool Guide

CoroPlus® Tool Guide

CoroPlus® Tool Guide makes tool selection easy. Get fast, accurate recommendations for any CoroMill® MH20 application based on your material, machine, and operation.

Recommendations

Code keys

Cutter body

MH20-(A)R 025A25-06M
123 456789 1011
  1. Milling
  2. High feed
  3. Family = 2
  4. Version = 0
  1. Inch cutters
  2. R = Right hand
  3. DCX
  4. Coupling types
    A/O = Cylindrical (metric/inch)
    Q/R = Arbor (metric/inch)
    EH = EH adaptor
  1. Coupling size
  2. Insert size
  3. Pitch: L/M/H

Insert

M H20-080425M-M201130
123 45678910
  1. Milling
  2. High feed
  3. Family = 2
  4. Version = 0
  1. Insert size
  2. Thickness
  3. Programming radius
  4. Edge quality
    E: Periphery ground
    M: Direct pressed
  1. Geometry
  2. Grade

Geometries

E-L30E-L50M-M20M-M50
Periphery-ground geometryPeriphery-ground geometryDirect-pressed geometryDirect-pressed geometry
ISO S and MISO S and MISO P and HISO P
  • Optimized geometry for pocketing applications in titanium and austenitic stainless steel
  • Light cutting
  • Closer tolerances ensure better component quality and higher insert tool life
  • Regulates chip formation and evacuation in sticky, long-chipping materials
  • Predictable and gradual wear characteristics
  • Medium and heavy cutting applications in ISO S and M
  • Optimized geometry for pocketing applications in Inconel
  • Highest metal removal rate in stable applications
  • Versatile geometry for all ISO P materials and all application areas, especially pocketing and ramping
  • Light cutting
  • Good edge-line security and trouble-free machining at long overhangs
  • Predictable and gradual wear characteristics
  • First choice for medium and heavy applications in ISO P
  • Strong radius for higher security around corners
  • Highest metal removal rate in stable applications
  • Controlled wear at the radius ensuring better performance in pocketing and contouring (ae ≤ 25%) applications

Cutting data, feed recommendations

ISO areaGradeInsert sizeGeometryfz, start value (min-max)
mm/zinch/z
ISO S
(TiAl6V4)		S30T, S40T,
GC2040		IC06E-L300.3 (0.1–0.6).012 (.004–.024)
IC08E-L300.45 (0.1–0.6).018 (.004–.024)
IC06E-L500.35 (0.1–0.6).014 (.006-.024)
IC08E-L500.5 (0.1–0.6).020 (.006-.024)
ISO S
(Inconel)		S30T, S40T,
GC2040		IC06E-L500.35 (0.1–0.6).014 (.006-.024)
IC08E-L500.5 (0.1–0.6).020 (.006-.024)
ISO M
(316L)		GC1040,
GC2040,
S30T,
S40T		IC06E-L300.3 (0.2–0.8).012 (.008–.031)
IC08E-L300.45 (0.2–0.8).018 (.008–.031)
IC06E-L500.35 (0.2–0.8).014 (.008-.032)
IC08E-L500.5 (0.2–0.8).020 (.008-.032)
ISO PGC1130,
GC4340		IC06M-M200.6 (0.2–0.8).024 (.008–.031)
IC08M-M200.7 (0.2–1.0).028 (.008–.039)
IC06M-M500.8 (0.45–1.0).031 (.018–.039)
IC08M-M501.0 (0.45–1.3).039 (.018–.051)
ISO HGC1010,
GC1130		IC06M-M200.45 (0.15–0.6).018 (.006–.024)
IC08M-M200.55 (0.1–0.8).022 (.039–.031)

Cutting data, cutting speed recommendations

ISO areaGradevc, (min-max)
m/minfeet/min
ISO S (TiAl6V4)S30T75–115 246–377
S40T75–100 246–328
GC204031–40 102–131
ISO S (Inconel)S30T40–60 131–197
S40T40–60 131–197
GC204040–60 131–197
ISO M (316L)GC1040115–180 377–591
GC2040160–225 525–738
S30T155–250 509–820
S40T165–235 541–771
ISO PGC1130150–265 492–869
GC4340150–265 492–869
ISO HGC101075–115 246–377

Helical ramping

Metric cutters (DCX)Inch cutters (DCX)IC06 insertsIC08 inserts
Max ap 0.8 mm (.031 inch)Max ap 1.3 mm (.051 inch)
Max ramping angle (RMPX)Max DmFlat min DmMin DmMax ramping angle (RMPX)Max DmFlat min DmMin Dm
5/810.1°31.823.422.4
169.5°32.023.622.6
3/46.5°38.229.828.810.7°38.227.626.1
205.8°40.031.630.69.6°40.029.427.9
253.7°50.041.640.65.7°50.039.437.9
13.6°50.842.441.45.5°50.840.238.7
11⁄43.6°63.653.051.5
323.6°64.053.451.9
11⁄22.7°76.265.664.1
402.5°80.069.467.9
442.3°88.077.475.9
501.7°100.089.487.9
21.7°101.691.089.5
521.6°10493.491.9
541.5°10897.495.9
631.1°126115.4113.9
21⁄21.1°127116.4114.9
661.0°132121.4119.9

Plunge milling

Overhang L ≤ 3×D

 

Note! S must be ≤ 20 mm

ICMax ae, mm (inch)Feed, mm/z (in/z)
064 (0.157)0.10 (0.05–0.15)
(0.004 (0.002–0.006))
085.5 (0.217)0.12 (0.05–0.15)
(0.005 (0.002–0.006))

Overhang L ≥ 3×D

 

Note! S must be ≤ 20 mm

ICMax ae, mm (inch)Feed, mm/z (in/z)
064 (0.157)0.08 (0.05–0.15)
(0.003 (0.002–0.006))
085.5 (0.217)0.1 (0.05–0.15)
(0.004 (0.002–0.006))​
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