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Modular Drills

KSEM PLUS™ A1 Heads • Drill Fix™ DFR Inserts

Features and benefits
  • Rectangular shaped Drill Fix™ DFR cutting inserts offer the highest feed rates for smaller sized KSEM PLUS™ systems on A1 heads.

  • KCU25™ grade has high metal removal rates. With its advanced TiCN-Al-CVD coating, it excels with superior tool life in stable working conditions.

  • KCU40™ is your first choice for high reliability when machining most materials for applications with medium cutting speeds. It features a multilayered TiAlN-PVD coating, providing high wear resistance in challenging conditions.

  • 2 indexable cutting edges.
Product specifications
Please specify your desire dimensions and tolerances in the Product Specifications table below.
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Filter By:
Product # ISO Catalog Number ANSI Catalog Number Grade First Choice NA First Choice EMEA First Choice AP [LI] Insert Length Metric [LI] Insert Length Inch [W] Insert Width Metric [W] Insert Width Inch [D1] Insert Hole Size Metric [D1] Insert Hole Size Inch [S] Insert Thickness Metric [S] Insert Thickness Inch [REPSILON] Corner Radius MM [REPSILON] Corner Radius Inch
5066192 DFR040304D28GD DFR040304D28GD KCU40 Y Y Y 10,75 .4236 7,260 .2860 2,850 .1122 3,790 .1492 0,400 .0156
5067486 DFR040304D28GD DFR040304D28GD KCU25 Y Y Y 10,75 .4236 7,260 .2860 2,850 .1122 3,790 .1492 0,400 .0156

Product Usage


Warnings • Drill Fix DFR

Dimensions • DFR Whistle Notch (WD) Shank

Dimensions • DFR Weldon Shank • DIN 1835-1 Form B

Dimensions • DFR Flanged Shank


  • KCU25

    Turning Composition: An advanced PVD grade with hard AlTiN coating and fine-grain unalloyed substrate. The new and improved coating improves edge stability with wide range speed and feed capabilities.

    Turning Application: The KCU25 grade is ideal for general machining of most steels, stainless steels, high-temp alloys, titanium, irons, and non-ferrous materials in a wide range of speeds and feeds with improved edge toughness for interrupted cut and high feed rates.

    Holemaking Composition: Advanced CVD TiCN-Al2O3 coating combined with a tough carbide substrate.

    Holemaking Application: First choice for steel, stainless steel, and cast iron. This grade offers adequate deformation resistance, excellent edge strength, and superior wear resistance over a wide range of machining conditions for high productivity with very good reliability.

  • KCU40

    Composition: Multilayered TiN-TiAlN-PVD coating and a tough substrate, that withstands interruptions and provides high wear resistance for long tool life.
    Application: KCU40 is the first choice for high reliability in most materials. This grade should be used at medium speeds and high feeds due to sharper edges. KCU40 covers steel, stainless steel, cast iron, and high-temperature alloys for high toughness applications under certain conditions.

Inserts and Holder Bodies for Drill Fix side inserts • DFR-GD Geometry

KSEM-HPCCL Center Inserts
KSEMP-HPGM Center Inserts
Drill Fix side inserts • DFR-LD Geometry
Drill Fix side inserts • DFR-MD Geometry
Drill Fix Side Inserts • DFC-HP Geometry
Drill Fix Side Inserts • DFC-MD Geometry
KSEM PLUS™ A1 Heads 28-101,6mm
KSEM PLUS™ B1 Heads 28-101,6mm
KSEM PLUS™ WD Shanks • 3 x D • Metric
KSEM PLUS™ WD Shanks • 5 x D • Metric
KSEM PLUS™ WD Shanks • 8 x D • Metric
KSEM PLUS™ WD Shanks • 10 x D • Metric
KSEM PLUS™ SSF Shanks • 3 x D • Inch
KSEM PLUS™ SSF Shanks • 5 x D • Inch
KSEM PLUS™ SSF Shanks • 8 x D • Inch
KSEM PLUS™ SSF Shanks • 10 x D • Inch