SKF LUBRILEAN Vario, Руководство по эксплуатации

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Assembly Page 15
EN

The lubricant supply should not exhibit any
significant changes to the cross section, any
concentric obstructions or sharp kinks
because the lubricant will separate from the
aerosol at these places and can precipitate.
This means that proper lubrication can no
longer occur.

The line cross-section of the aerosol lines
should be large enough to transport a
sufficient quantity of lubricant to the tool. Near
the tool, the canal diameter should be
< 8 mm because a higher flow rate is desired
here.

The length of the main aerosol line should be
kept as short as possible. As the length of the
aerosol line increases, the losses in pressure
and aerosol also increase due to the lubricant
separating. In addition, a longer distance
between the MQL system and the machine
means that the response time after changing
an aerosol takes longer.

The aerosol lines should be laid as straight as
possible, and “sharp kinks” are particularly to
be avoided because the lubricant can
separate at these places. If bends are
unavoidable, there should be a radius of at
least 200 mm.

The main aerosol line should exhibit as few
cross-section alterations as possible. If cross-
section alterations are unavoidable, the
junctions should be made as smooth as
possible. An ideal junction angle is < 15.

All connections should be smooth-faced and
without pockets or protruding edges. This
particularly applies to the junction between
the tool and the tool-receiving socket.

The aerosol lines should be exposed to as
few vibrations and oscillations as possible.

The aerosol routing should exhibit a
continuous incline towards the machine.
Downward bends should be avoided as much
as possible because lubricant can collect in
these places, for example, when the machine
is idle.

If laying the aerosol lines with downward
bends is unavoidable, it is necessary from
time to time to blow out the lubricant that has
collected after the tool has been removed.
When doing this, please respect the relevant
safety warnings.

The aerosol supply for spindles or rotating
parts should occur in an axial direction as
much as possible. For a radial supply, the
lubrication can be “spun out”, especially at
high spindle speeds. In other words, the
result is the separation of the aerosol. This
especially affects applications with small,
quickly rotating tools.

When handling the component, only suitable
tools should be used for the minimal quantity
lubrication. Only in this way can it be ensured
that lubricant is supplied in a sufficient
quantity during processing.

The outflow opening of the cooling channel
borehole on the tool should not (as standard
for many tools with solid-stream lubrication)
exclusively be on the tool edge. When using
these types of tools, you do not achieve the
ideal results that can usually be achieved with
the application of minimal quantity lubrication
in comparison with solid-stream lubrication
where the operating pressure is considerably
lower, the point of application between the
tool and component is insufficiently lubricated
in the case of the minimal quantity lubrication
principle.