Standard Cut Styles Special Cut Styles
Standard Cut (Right-Hand Spiral) Coarse Cut
The WIDIA ™ standard (right-hand spiral) cut
produces a smooth fi nish for general-purpose
use on steel, cast iron, and other ferrous and
non-ferrous materials.
Most WIDIA carbide burs are available in the
right-hand spiral design. Coarse cut burs are favored for applications in softer
materials such as brass, lead, annealed low-carbon steels,
and some aluminium alloys. The combination of fewer fl utes
with greater depths provides the chip clearance necessary
for these materials.
Available as specials.
Master Cut (Double Cut) Fine Cut RHS
The WIDIA exclusive master cut, with its chisel-type cutting
edge, is a machine-ground tool built to exacting tolerances
of concentricity, size, and shape. This accuracy, when
combined with precision grinders, results in smooth-running,
fast metal removal, and fi ne fi nishes. The right- and left-hand
helical fl utes combine to produce a chisel-type cutting tooth.
This results in faster penetration and stock removal with
minimal bounce or chatter.
The master cut design also produces an easy-to-handle
granular-type chip in most metals, as opposed to the
conventional sliver-type chips.
Throughout its life, the master cut gives faster stock removal
and less operator fatigue, and maintains a good fi nish on the
widest possible variety of workpiece materials. The WIDIA fi ne cut right-hand spiral is used in applications
where stock removal is light and workpiece fi nish is critical.
A greater number of fl utes reduces chip load and provides
excellent control in deburring small, intricate areas.
Available as specials.
Aluminium Cut
The WIDIA aluminium cut burs are outstanding
on soft or non-ferrous type materials. Use the
aluminium cut design on aluminium, magnesium,
brass, lead, and most plastics.
How to select a Bur
Material
Cut
Effi cient stock removal — deburring,
fi nishing, and cleaning. Ferrous metals
Non-ferrous metals Double Master Cut
Heavy stock removal — deburring, milling,
cleaning, and machining. Non-ferrous metal: aluminium alloys
Plastics Aluminium Cut
Medium stock removal — deburring,
milling, cleaning, and fi nishing. Non-ferrous metal: aluminium alloys
Plastics
Hard rubber Coarse Cut
Special Cut Style
Medium stock removal — deburring,
milling, cleaning, and fi nishing. Non-Hardened steel >45 HRC
Hardened steel >45 HRC: stainless steel
High-temperature resistant metals: nickel, cobalt, titanium
Non-ferrous light metals: brass, copper, and zinc
Hardened >45 HRC: cast iron Single Cut
Light stock removal — fi ne deburring
and fi ne fi nishing. Hardened steel >45 HRC Fine Cut
Special Cut Style
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R3
Applications