Highly rigid internal toolholder with excellent chip evacuation

Ideal tool geometry has been developed for excellent chip evacuation by extensive structural analysis simulation

Applications & Features

Internal turning

Engineered for tool strength and optimal chip evacuation

1. Tool body of special alloy steel, designed to reduce chatter

• Ensures superior surface finish quality over conventional ID turning tools.
• Improved tool life, efficiency, and economy.

2. Optimal holder design assures low cutting load and high performance in the smallest bore diameters

3. Easy to use

Marking specifications

Inserts & Grades


Inserts for Internal Turning

Main Grades


  • P10 – P20
  • Well-balanced between wear and chipping resistance
  • First choice for steel
  • High versatility for a wide range of applications


  • P15 – P30 / M15 – M30
  • High wear resistance in cutting at medium to high speed
  • First choice for stainless steel


  • M01 – M20 / S10 – S20
  • Good balance between wear and fracture resistance
  • First choice for machining heat-resistant alloy under general cutting conditions


Internal turning

StreamJetBar Toolholders

Highly rigid internal toolholder with excellent chip evacuation

Practical examples

Part: Machine parts
Material: S35C (C35)
Toolholder: E20S-SDUCR11-D270
Insert: DCMT11T304-PS
Grade: T9215
Cutting conditions: Vc = 70 – 160 (m/min)
f = 0.12 – 0.2 (mm/rev)
ap = 1.0 (mm)
Coolant: Wet
Part: Automotive parts
Material: S45C (C45)
Toolholder: A12M-SDUPL07-D180-P
Insert: DPMT070204-PS
Grade: T9215
Cutting conditions: Vc = 130 (m/min)
f = 0.1 (mm/rev)
ap = 1.5 (mm)
Coolant: Wet

Standard cutting conditions

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