Superior Deep-Hole Drilling

WIDIA™ TOP DRILL™ Deep-Hole Drills for Steel and Cast Iron

Top Drill Deep-Hole Drills

Solid carbide deep-hole drills outperform gun drills and HSS deep-hole drills in deep-hole applications up to 30 x D by increasing metal removal rates by 3–4 times. Increased MRR equals bottom-line savings to customers in throughput, machine time, and personnel hours.

The TDD1*Z* Series in the WU20PD™ grade offers secure and consistent performance, excellent hole quality, and reduced cycle times. The standard lines are available from 3 to 13mm and lengths of 15, 20, 25, and 30 x D. It eliminates the traditional HSS or gun drilling without pecking, at up to 100% increased penetration rates.

132° TDS Point Geometry

  • Low thrust.
  • Excellent centring capabilities.
  • Easy to regrind.

30° Helix with Optimised Flute Profi le

  • Reduces risk of chip jamming and catastrophic failure.

Four-Margin Lands

  • Improves hole straightness.
  • Improves hole alignment when drilling through cross holes and inclined exits.