Top Cut 4™

WIDIA™ Top Cut 4 (TC4) portfolio is a broad offering for customers looking

for a versatile indexable drilling platform.

  • Easy to apply, highly versatile.
  • No risk of mixing up inner and outer insert due to clear visual differences.
  • Easy-to-change inserts, laser marked with geometries and grades.
  • Easy-to-use nomenclature guide enabling the tool body and the related insert selection to avoid order failures.
  • Breadth of application capabilities include through and cross holes, inclined entry and exit opportunity, 45° corner, half cylindrical, concave, or chain drilling.
  • Four grades to achieve higher tool life at accelerated speeds:

— WU25CH grade for highest metal removal rate in general applications. — WU40PH grade for high toughness demands. — WPK10CH grade for high-speed applications. — WN10PH grade specific for aluminium and other non-ferrous materials.

L/D Ratios

Standard diameter range covering

12–68mm

Flanged Shank Increase the overall drill stability, above all in deep-drilling applications.

Coolant Channels Coolant channel exit right behind the cutting edge.

SL Shank Style Cylindrical Shank with flat: suitable for machining centres, as well as turning centres.

Differentiated Inserts Shape To avoid grade mixing between Optimised Chip Flute central and periphery inserts. Large and optimised flutes to contain chips during machining.

Top Cut 4 Inserts Expansion — Long Chip Materials — Non-Ferrous Materials.

-V34 -V36 -V36 WN10PH -V38

  • Four real cutting edges on each insert for entire platform.
  • Eight insert sizes to cover complete diameter range.

P K P M K N P M S

First choice for machining Steel,First choice for Stainless Steel.First choice forIdeal for long
Cast Iron, and short chippingSuitable for deep drilling andNon-Ferrous materials.chipping materials.

materials. Suitable for severe where low power consumption cutting conditions. is required.