TinyInternalCut

Applications & Features

Inserts & Grades

Toolholders

Sleeves

Practical examples

Example #1

Workpiece Type:	Cover
Workpiece Material:	Alloy steel
Toolholder:	A07080-SMR4
Insert:	MGR4100F000-D05
Grade:	SH7025
Cutting conditions:	Vc = 38 (m/min) f = 0.01 (mm/rev) CW = 1 (mm) CDX = 0.7 (mm) Machining: Internal grooving Coolant: Wet

Example #2

Workpiece Type:	Valve seat
Workpiece Material:	Alloy steel
Toolholder:	A07080-SMR4
Insert:	MGR4100F000-D05
Grade:	SH7025
Cutting conditions:	Vc = 50 (m/min) f = 0.01 (mm/rev) CW = 1 (mm) CDX = 0.5 (mm) Machining: Internal grooving Coolant: Wet

Standard cutting conditions

Internal grooving

ISO	Workpiece material	Grade	Cutting speed Vc (m/min)	Feed:f (mm/rev)
				RE = 0mm	RE = 0.03mm	RE = 0.1mm	RE = 0.2mm
	Low carbon steel S15C, etc., C15E4, etc.	SH7025	10 – 100	0.005 – 0.015	0.005 – 0.02	0.01 – 0.02	0.01 – 0.03
	Carbon steels, Alloy steel S55C, SCM440, etc., C55, 42CrMoS4, etc	SH7025	10 – 60	0.005 – 0.01	0.005 – 0.015	0.005 – 0.015	0.01 – 0.03
	Prehardened steel NAK80, PX5, etc.	SH7025	10 – 40	0.005 – 0.008	0.005 – 0.01	0.005 – 0.01	0.01 – 0.025
	Stainless steel SUS304, etc., X5CrNi18-9, etc.	SH7025	10 – 80	0.005 – 0.008	0.005 – 0.01	0.005 – 0.015	0.01 – 0.02

Profiling – full radius

ISO	Workpiece material	Grade	Cutting speed Vc (m/min)	Feed:f (mm/rev)
				RE = 0mm (Max.ap = 0.35mm)	RE = 0.03mm (Max.ap = 0.5mm)	RE = 0.2mm (Max.ap = 0.7mm)
	Low carbon steel S15C, etc., C15E4, etc.	SH7025	10 – 120	0.005 – 0.015	0.005 – 0.02	0.01 – 0.02
	Carbon steels, Alloy steel S55C, SCM440, etc., C55, 42CrMoS4, etc	SH7025	10 – 100	0.005 – 0.01	0.005 – 0.018	0.01 – 0.015
	Prehardened steel NAK80, PX5, etc.	SH7025	10 – 80	0.005 – 0.008	0.005 – 0.015	0.005 – 0.013
	Stainless steel SUS304, etc., X5CrNi18-9, etc.	SH7025	10 – 100	0.005 – 0.01	0.005 – 0.012	0.005 – 0.01

Threading

ISO	Workpiece material	Grade	Cutting speed Vc (m/min)	Feed:f (mm/rev)
	Low carbon steel S15C, etc., C15E4, etc.	SH7025	10 – 100	30 – 60
	Carbon steels, Alloy steel S55C, SCM440, etc., C55, 42CrMoS4, etc	SH7025	10 – 60	10
	Prehardened steel NAK80, PX5, etc.	SH7025	10 – 40	10 – 20
	Stainless steel SUS304, etc., X5CrNi18-9, etc.	SH7025	10 – 80	10 – 80

Recommended infeeding passes for thread pitches

Thread pitch (mm)	Insert designation	RE (mm)	Total depth of feed	Recommended number of passes	Depth of cut per pass (mm)
					Pass 1	Pass 2	Pass 3	Pass 4	Pass 5	Pass 6	Pass 7	Pass 8	Pass 9
0.5	MTR460F003-D05	0.03	0.3	5	0.08	0.07	0.06	0.05	0.04
0.75		0.03	0.47	6	0.12	0.1	0.08	0.07	0.06	0.04
1	MTR560F007-D07	0.07	0.6	6	0.18	0.15	0.1	0.08	0.05	0.04
1.25		0.07	0.76	7	0.18	0.15	0.12	0.1	0.1	0.07	0.04