Page 48 - Multi-Master Catalog

Engineered for
MAXIMUM
MULTI-MASTER

Performance

90˚ Endmill Cutting Heads

There are two kinds of the small-diameter greater than in the case of solid carbide
(8-25 mm) MULTI-MASTER heads for square endmills or MM EC… heads, so despite only
shoulder milling. two teeth, the feed speed is the same as for
multi-flute mills or heads.
The first, which is designated MM EC…, has exactly The mentioned strength property allows even a slight
the same cutting geometry (number of flutes, increase of cutting speed relative to the solid carbide
helix angle, etc.) as the solid carbide endmills. tools/heads for the same tool life period.
The only difference is a smaller cutting length: This property makes MM HC… heads to be an
normally, it does not exceed a head diameter. attractive economical solution especially in
Naturally, the cutting data for MM EC… heads is rough milling and slot drilling.
the same as for the 90˚ solid carbide endmills.
The second, “economy” type, designated MM
HC… features only two flutes and a lesser
helix angle. Being pressed and sintered to shape
and size, the cutting geometry of the heads
of this type is merely finished by grinding. Due to
the high-impact structure of a pressed tooth,
the heads run at feeds per tooth that are significantly

46 ISCAR