IMET Spa BASIC 300 PLUS SHI, Инструкция по эксплуатации

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INSTRUCTIONS FOR USE
BS300 Plus SHIing ED.2010 rev.00
13 - 66
10 - BLADE CHOICE for BS 300 MODELS
In this paragraph we recommend the type of blade according to the material to cut. To get the best
performance from this machine it is necessary to understand how to use the tools and what you do not have
to do with them. The blade for this bandsaw must have the following size (mm) :
maximum length = 2770 minimum length = 2750 height = 27 thickness =0,9
The type of blade is also important, usually it’s a bi-metal blade with different HARDNESS,
named M42 or
SVGLB ( for general purpose, tubes, profiles and solids, available in all pitch type), M51 or SHL
(preferred for big solids of hardening steel, INOX material too, available with 3/4 tooth pitch).
The durability of the teeth increases, and also the fragility, when going from the material M42 to M51.
To making a correct cut it’s essential to choose the pitch ( t ) or the number of the teeth per inch (z).
Usually the blade must have a pitch as follows :
- high pitch (small teeth), to cut thin materials, tubular and profiles.
- low pitch (big teeth), to cut solids or particular sections that require at times a big blade effort (for example,
the central part of a U profile), or softer materials as aluminium, copper, soft bronze.
By choosing the right one you can avoid a lot of working errors, get a good cut and the necessary room for
the chips.
If you cut more bars at the same time, you must consider them as a single bar and consider
the total size. The following table provide the information for a correct choice, it can also be updated or
modified by the user according to his personal experiences.
Even if blades with constant pitch are available, most bandsaws allow to use blades with variable pitch -
groups of teeth with different pitch between them - which reduce vibrations and noise, improving the quality of
the cut and the performance.
SUGGESTED TOOTH PITCH SOLIDS
Outer
Diameter
(mm)
BIG
PROFILES
Wall
Thickness
(mm)
PROFILES
Wall
Thickness
(mm)
BUNDLE
Length
to Cut
(mm)
VARIABLE
CONSTANT
14 M42 - - 1,5 max -
10/14 M42
10 M42 - - 1 to 2 -
8/12 M42
8 M42 20 max - 2 to 4 -
6/10 M42
6 M42 40 max - 4 to 8 -
5/8 or 5/7 M42
5 M42 30 to 80 6 to 12 - 50 to 100
4/6 M42
4 M42 40 to 90 10 to 20 - 70 to 120
3 / 4 M42 or M51
3 M42 or M51 70 to 150 15 to 25 - 100 to 200
2/3 M42 or M51
2 M42 or M51 120 to 230 over 25 - 120 to280