TDF Drills for Flat-Bottom Applications
(Available as Semi-Standards)
Primary Application
Engineered specifi cally to eliminate the need for a two-part operation
when drilling fl at-bottom holes or on an inclined surface:
• Drill fl at-bottom holes in one step.
• Eliminate the need to use both an end mill and a drill to machine a fl at
on an inclined surface.
• After full cylindrical engagement, the drills run at normal solid carbide
drilling parameters.
Features and Benefi ts
• Four-Margin Design
– Increases contact with material at full diameter.
– Improves hold quality and drill stability in the cut.
– Enables interrupted cuts and inclined exits.
• Special Point-Thinning
– Increases centring capability.
– Improves chip formation and fl ow.
– Reduces cutting forces.
• The Flat-Bottom Drill product series TDF51* is pre-designed in four lengths and
available in two grades, WN15HD for non-ferrous materials, and WU20PD ™ for
steel, iron, and stainless steel.
– TDF510*
1,5 x D
– TDF511*
3 x D
– TDF512*
5 x D
– TDF513*
8 x D
• Length variations and step drills available as engineered solutions.
Ordering Process
• Please contact your local Authorised Distributor for a quote.
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