Promac SX-818DV Operating Instructions Manual page 11

Most common form for transversal or inclined cutting of
solid small and average cross-sections or pipes, in
laminated mild steel and gray iron or general metal.
POSITIVE RAKE TOOTH: 9º - 10º positive rake and
constant pitch.
Particular use for crosswise or inclined cuts in solid
sections or large pipes, but above all harder materials
(highly alloyed and stainless steels, special bronze and
forge pig iron).
COMBO TOOTH: pitch varies between teeth and
consequently varying teeth size and varying gullet depths.
Pitch varies between teeth, which ensures a smoother,
quieter cut and longer blade life owing to the lack of
vibration.
Another advantage offered in the use of this type of blade
in the fact that with an only blade it is possible to cut a
wide range of different materials in size and type.
COMBO TOOTH: 9º - 10º positive rake.
This type of blade is the most suitable for the cutting of
section bars and large and thick pipes as well as for the
cutting of solid bars at maximum machine capacity.
Available pitches: 3-4/4-6.
SETS
Saw teeth bent out of the plane of the saw body, resulting
in a wide cut in the workpiece.
REGULAR OR RAKER SET: Cutting teeth right and left,
alternated by a straight tooth.
Of general use for materials with dimensions superior to 5
mm. Used for the cutting of steel, castings and hard
nonferrous materials.
WAVY SET: Set in smooth waves.
This set is associated with very fine teeth and it is mainly
used for the cutting of pipes and thin section bars (from 1 to
3 mm).
ALTERNATE SET (IN GROUPS): Groups of cutting teeth
right and left, alternated by a straight tooth.
This set is associated with very fine teeth and it is used for
extremely thin materials (less than 1mm).
ALTERNATE SET (INDIVIDUAL TEETH): Cutting teeth right
and left.
This set is used for the cutting of nonferrous soft materials,
plastics and wood.