CoroMill® MH20

High feed pocket milling

Overview

Success stories

How to use

Assortment

Instructions

Maximum depth of cut (APMX)

The maximum depth of cuts are:
IC06: 0.8 mm (0.031 inch)
IC08: 1.3 mm (0.051 inch)

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 inch)
IC08: 2.5 mm (0.098 inch)

Marking of geometries

The inserts have a prominent marking to differentiate the geometries.

Application tips

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.

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Plunging

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

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Recommendations

Code keys

Cutter body

M	H	2	0	-	(A)	R	0	2	5	A	2	5	-	0	6	M
1	2	3	4		5	6	7			8	9			10		11

Milling
High feed
Family = 2
Version = 0

Inch cutters
R = Right hand
DCX
Coupling types
A/O = Cylindrical (metric/inch)
Q/R = Arbor (metric/inch)
EH = EH adaptor

Coupling size
Insert size
Pitch: L/M/H

Insert

M	H	2	0	-	0	8	0	4	2	5	M	-	M	2	0		1	1	3	0
1	2	3	4		5		6		7		8		9				10

Milling
High feed
Family = 2
Version = 0

Insert size
Thickness
Programming radius
Edge quality
E: Periphery ground
M: Direct pressed

Geometry
Grade

Geometries


E-L30	E-L50	M-M20	M-M50
Periphery-ground geometry	Periphery-ground geometry	Direct-pressed geometry	Direct-pressed geometry
ISO S and M	ISO S and M	ISO P and H	ISO P
Optimized geometry for pocketing applications in titanium and austenitic stainless steel Light cutting Closer tolerance ensures 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 the corner Highest metal removal rate in stable applications Controlled wear at the radius ensuring better performance in pocketing and contouring (a_e ≤ 25%) applications

Cutting data, feed recommendations

ISO area	Grade	Insert size	Geometry	f_z, start value (min-max)
ISO area	Grade	Insert size	Geometry	mm/z	in/z
ISO S (TiAl6V4)	S30T, S40T, GC2040	IC06	E-L30	0.3 (0.1–0.6)	.012 (.004–.024)
		IC08	E-L30	0.45 (0.1–0.6)	.018 (.004–.024)
		IC06	E-L50	0.35 (0.1–0.6)	.014 (.006-.024)
		IC08	E-L50	0.5 (0.1–0.6)	.020 (.006-.024)
ISO S (Inconel)	S30T, S40T, GC2040	IC06	E-L50	0.35 (0.1–0.6)	.014 (.006-.024)
ISO S (Inconel)	S30T, S40T, GC2040	IC08	E-L50	0.5 (0.1–0.6)	.020 (.006-.024)
ISO M (316L)	GC1040, GC2040, S30T, S40T	IC06	E-L30	0.3 (0.2–0.8)	.012 (.008–.031)
		IC08	E-L30	0.45 (0.2–0.8)	.018 (.008–.031)
		IC06	E-L50	0.35 (0.2–0.8)	.014 (.008-.032)
		IC08	E-L50	0.5 (0.2–0.8)	.020 (.008-.032)
ISO P	GC1130, GC4340	IC06	M-M20	0.6 (0.2–0.8)	.024 (.008–.031)
		IC08	M-M20	0.7 (0.2–1.0)	.028 (.008–.039)
		IC06	M-M50	0.8 (0.45–1.0)	.031 (.018–.039)
		IC08	M-M50	1.0 (0.45–1.3)	.039 (.018–.051)
ISO H	GC1010, GC1130	IC06	M-M20	0.45 (0.15–0.6)	.018 (.006–.024)
ISO H	GC1010, GC1130	IC08	M-M20	0.55 (0.1–0.8)	.022 (.039–.031)

Cutting data, cutting speed recommendations

ISO area	Grade	v_c, (min-max)
ISO area	Grade	m/min	ft/min
ISO S (TiAl6V4)	S30T	75–115	246–377
	S40T	75–100	246–328
	GC2040	31–40	102–131
ISO S (Inconel)	S30T	40–60	131–197
	S40T	40–60	131–197
	GC2040	40–60	131–197
ISO M (316L)	GC1040	115–180	377–591
	GC2040	160–225	525–738
	S30T	155–250	509–820
	S40T	165–235	541–771
ISO P	GC1130	150–265	492–869
ISO P	GC4340	150–265	492–869
ISO H	GC1010	75–115	246–377

Helical ramping

Metric cutters (DCX)	Inch cutters (DCX)	IC06 inserts				IC08 inserts
		Max a_p 0.8 mm (.031 inch)				Max a_p 1.3 mm (.051 inch)
		Max ramping angle (RMPX)	Max D_m	Flat min D_m	Min D_m	Max ramping angle (RMPX)	Max D_m	Flat min D_m	Min D_m
	5/8	10.1°	31.8	23.4	22.4
16		9.5°	32.0	23.6	22.6
	3/4	6.5°	38.2	29.8	28.8	10.7°	38.2	27.6	26.1
20		5.8°	40.0	31.6	30.6	9.6°	40.0	29.4	27.9
25		3.7°	50.0	41.6	40.6	5.7°	50.0	39.4	37.9
	1	3.6°	50.8	42.4	41.4	5.5°	50.8	40.2	38.7
	1¹⁄₄					3.6°	63.6	53.0	51.5
32						3.6°	64.0	53.4	51.9
	1¹⁄₂					2.7°	76.2	65.6	64.1
40						2.5°	80.0	69.4	67.9
44						2.3°	88.0	77.4	75.9
50						1.7°	100.0	89.4	87.9
	2					1.7°	101.6	91.0	89.5
52						1.6°	104	93.4	91.9
54						1.5°	108	97.4	95.9
63						1.1°	126	115.4	113.9
	2¹⁄₂					1.1°	127	116.4	114.9
66						1.0°	132	121.4	119.9

Plunge milling

Overhang L ≤ 3×D

Note! S must be ≤ 20 mm

IC	Max a_e, mm (inch)	Feed, mm/z (in/z)
06	4 (0.157)	0.10 (0.05–0.15) (0.004 (0.002–0.006))
08	5.5 (0.217)	0.12 (0.05–0.15) (0.005 (0.002–0.006))

Overhang L ≥ 3×D

Note! S must be ≤ 20 mm

IC	Max a_e, mm (inch)	Feed, mm/z (in/z)
06	4 (0.157)	0.08 (0.05–0.15) (0.003 (0.002–0.006))
08	5.5 (0.217)	0.1 (0.05–0.15) (0.004 (0.002–0.006))

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Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era. Educational support, extensive R&D investment and strong customer partnerships ensure the development of machining technologies that change, lead and drive the future of manufacturing.

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