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BM109
SERIES 1.5KW Auto-Focusing Laser Cutting Heads
User Manual
better the quality of the cutting section.
Gas
Purity
Maximum content
of water vapor
（
ppm
）
Maximum content of
hydrocarbon
（
ppm
）
oxygen
99.95%
<5 ppm
<1 ppm
nitrogen
99.99%
<5 ppm
<1 ppm
argon
99.998%
<5 ppm
<1 ppm
helium
99.998%
<5 ppm
<1 ppm
Diameter of cooled gas
pipe (Outer diameter)
10mm
Impurity can be filtered out in gas supply tube, but oxygen and water vapor can permeate
the light path system through nonmetal materials, which is the source of the appearance of dust
and hydrocarbon. Stainless steel fittings are recommended, at the same time, operators must
use filters which can remove a minimum of 0.01 micron particle to purify.
A pressure gauge with a stainless steel diaphragm is recommended. Industrial pressure
gauges suck in air. Rubber diaphragm produce hydrocarbon by aging or other factors.
CAUTION: gas interface can not be replaced arbitrarily, especially do not use PTFE TAPE,
Otherwise, the gas path will be blocked, the normal cutting will not be possible and the laser
head parts will be damaged at the same time.
2.3 Connection of Cutting Head Cable
This paper mainly introduces the connection between the cable and the cutting head. The
connection of control sections such as the driver refers to the wiring diagram of each series of
system.
2.3.1 Connection of Cutting Head and Cable
Connect the corresponding connector of cutting head with eight-core power limit cable,
twelve-core encoder cable respectively (as shown in Figure 3.3). After the proper length is
reserved, insert and fix the cable into the track groove of the machine tool.
