TinyInternalCut

Applications & Features

Applications

Internal grooving

Internal grooving (full R)

Internal threading

Features

Application ranges / Internal grooving holder

Three insert geometries

Unique clamping system for highly rigid clamping

Tool body with through coolant

Make sure that, when assembling, the cutting edge is in line with the coolant outlet for effective chip evacuation.

Extremely precise edge repeatability

Exchangeable head system with extremely high repeatability

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