Various Blade Types - Jet ELITE EHB-270DGSVIP Mode D'emploi

Figure 10-3: Solid Material

10.4 Various Blade Types

They differ essentially in their constructive characteristics,
such as:
- Shape and cutting angle (rake) of tooth
- Pitch
- Set
Shape and rake of tooth:
REGULAR TOOTH: Oº rake and constant pitch.
Most common form for cross or inclined cutting of small solid
and average cross-sectioned pipes. For mild steel and gray cast
iron or general metal.
POSITIVE RAKE TOOTH:
9º - 10º positive rake and constant pitch.
Particularly use for cross or inclined cuts in solid sections of
large pipes. But above all for 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.
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: with 9º - 10°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 work-piece.
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.
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