Search

TinyInternalCut

Home / Products / Grooving / TinyInternalCut
g_564_t_01

Internal grooving and thread turning tool series for bores as small as ø5 mm

Indexable tooling solution for internal machining of small diameter bores

Applications & Features

Applications

Internal groovingInternal 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

Inserts

MGR inserts for Grooving

  • CW = 1 – 2 mm

MTR inserts for Threading

Grades

SH7025

  • P20 – P30 / M20 – M30
  • The latest grade with sharp cutting edge designed for small part machining.
  • A combination of a columnar-structured TiCN coating and multilayered TiAlN coating provides superior surface quality and process security.

Toolholders

TinyInternalCut Toolholders

Screw-on boring bar

Sleeves

TinyInternalCut Sleeves

Sleeve for internal coolant supply with 4 coolant holes

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

For more information about this product, visit our online e-catalog or download the product report:

e-Catalog

Metric  |  Imperial

PDF
Online Shop

Online Shop

Online Shop
Find and order tools online

Learn more
e-Catalog

e-Catalog

e-Catalog
Download CAD drawings and 3D models

Learn more
Resources