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.
• Improves hole straightness.
• Improves hole alignment when drilling
through cross holes and inclined exits.
T104
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Four-Margin Lands