Gundrills & Reamer Types
Solid Carbide Tip &
Shank, Single Kidney Oil Hole, Single Flute
Solid carbide shank and tip, available from .039" (1.00mm) to .1875"
(4.75mm) diameter.
Single Round Oil Hole, Single Flute
Carbide tip, available from .0550" (1.39mm) to
1.2599" (32.00mm) diameters. Inserted carbide style gundrills
available from 1.2600" (32.00mm) to 3.000" (76.20mm) diameters.
Two Round Oil Holes, Single Flute
Carbide tip, available from .3150" (8.00mm) diameter to 1.160"
(29.46mm). Use when more cutting fluid is desired to the cutting
edge and for additional chip evacuation. Often used on applications
where there is inadequate coolant pressure.
Kidney Shaped Oil Hole, Single Flute
Carbide tip, available from .0750" (1.90mm)
diameter to .315" (8.00mm) diameter. This range includes over 100
sizes and lengths for same-day shipment. Often used on applications
where there is inadequate coolant pressure.
Two Oil Holes, Two Flute
Carbide tip with two cutting edges for twice the feed rates of a
single flute. The flute channels are not as deep as on single flute
drills, applications are limited to very small chip formation type
material such as cast iron, cast aluminum and ductile materials.
Available in diameters from .1875" (4.75mm) to 1.25" (31.75mm)
Two Oil Holes, (milled) Two Flute
Same cutting characteristics as the two hole
twin flute, except the tube (shank) is milled from steel to make a
very rigid tool. This tool is required on special applications with
cross holes or when very aggressive feed rates are dictated, such as
controlling stations on a transfer line.
Single Oil Hole, Single Flute, Chips Ahead
Reamer
Carbide tip, available from .1875" (4.75mm) diameter to 1.2500"
(31.75mm) diameter. This end cutting tool forces chips out ahead of
the tool and requires an existing thru hole in the workpiece.
Primarily used to open up predrilled or cored holes to close
tolerances. Available in butt-braze or vee-style braze.
Two Oil Holes, Two Flute, Chips Ahead Reamer
Designed to penetrate twice as fast as the
single flute reamer for special applications only when an
intersecting core hole might need to be opened.