Page 221 - Threading_Handbook

Application
Machining Diameter • What is the machining diameter?

For internal thread milling, in most cases the initial endmill diameter is recommended to be
up to 70% of the thread's major diameter. THREAD MILLING
The requested thread with a major diameter of 20 mm, means that the maximum
recommended diameter can be 14 mm (20*0.7=14).

Cutter Diameters - Full Profile - ISO Standard - Solution for Internal Threading
Thread Milling Pitch (mm)
Family Subfamily 1.5 1.75 2
MTEC Ø7.0 - Ø16.0 Ø8 Ø10.0 - Ø20.0
SOLIDTHREAD MTECB Ø7.8 - Ø16.0 Ø9 Ø10.0 - Ø11.8
MTECZ Ø7.8 - Ø16.0 Ø9 Ø10.0 - Ø11.8

Cutter Diameters - Full Profile - Solution with Indexable Inserts
Thread Milling Cutter Diameter (mm)
Family Subfamily min. max.
MILLTHREAD MTE Ø9.5 Ø48

Application

• What type of coolant is available
Coolant
(external / internal coolant)?

Tool Adaptor • What tool adaptor is available?

For an internal through hole, it is recommended to use solid cutters with internal coolant
holes directed to the cutting edges along the flutes, or tools with internal coolant channels
directed to the cutting area for indexable inserts.
Family Subfamily Adaptation Coolant
Internal coolant holes directed to the cutting
SOLIDTHREAD MTECZ Cylindrical
edges along the flutes
MILLTHREAD MTE Weldon Internal coolant channels detected to cutting area

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