Cleveland Twist Drill's Q Series drills are designed
to operate at penetration rates up to 5 times that of conventional
high speed twist drills in carbon steel, alloyed steel and stainless
steel. This is made possible through a combination of a unique
shape together with controlled point geometry, which
promotes exact chip formation and subsequent chip breakage.
The Q Series' tighter hole size control, within
.0015", enables the elimination of most reaming operations.
The controlled point geometry of the Q Series
drill is reproducable on conventional pointing/notching equipment.
Unlike other high penetration rate drills, the additional expense
of dedicated regrinding equipment or limited regrinding services
is not needed.
Conventional Twist Drills:
point and flute geometry
broken chips easily removed at higher penetration rate
rigidity in the cut
chip ejection, tool life and hole size control to .0015"
feeding Q PM style
chip ejection at higher penetration rates in deeper holes
metal HSS with cobalt added
edge retention and longer tool life
screw shank where needed
drill slippage at higher penetration rates
High Penetration Rate Drills:
on conventional equipment with no edge prep for Q PM and simplified
edge prep for Q Carbide