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 Profile • 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. T104 widia.com