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User Manual
Operating Instructions
Subject to modifications
4.2EN-18005-C10
LINCOLN GmbH • Postfach 1263 • D-69183 Walldorf • Tel +49 (6227) 33-0 • Fax +49 (6227) 33-259
Operating Method
6 726b0 6
Fig. 3
Basic position of the QSL metering device
1 Indicator pin, retracted
P2 Outlet to the lube points
2.1 Compression spring
2.2 Distributing chamber
2.3 Piston
2.4 Spring sleeve
2.8 Metering washer
3 Valve
4 Divider bar
P1 Lubricant inlet
6001a 02
NOTE
In the drawings fig. 2 ff the outlets P2 are
shown at the side. Actually they are moun-
ted showing to the front side (see fig. 1).
Operating Cycle
Basic position (see fig. 3):
QSL metering device and main line 4 (divider bar) pres-
sure-relieved
Compression spring 2.1 pretensioned
The distributing chamber 2.2 is still filled with lubricant
from the previous operating cycle.
Sealing lip of valve 3 closed
Metering procedure (see fig. 4):
The centralized lubrication pump builds up the operating
pressure in the main line and at the inlet P1 of the divider
bar (max. 300 bar).
The operating pressure P1 presses the valve-sealing lip
against the valve 3 and opens the metering channel 2.6 to
the metering chamber 2.5.
Lubricant passes by the valve-sealing lip into the metering
chamber 2.5 and presses the piston 2.3 in the compres-
sion sleeve 2.4 upward.
The indicator pin 1.1 is pressed outward as a visual func-
tion control.
Final metering position (see Fig. 5):
The metering chamber 2.5 is filled until the upper end of
the spring sleeve 2.4 touches the metering washer 2.8.
Thereby, lubricant is supplied above the spring sleeve 2.4
through the distribution chamber 2.2 to outlet P2.
Pressure relief (see Fig. 6):
After actuating the pressure-relief unit of the centralized
lubrication pump, the pressure P1 in the main line and the
divider bars drops.
At the point of time of venting between main line and
metering chamber 2.5 the valve 3 closes all channels 2.6
& 2.7.
Shifting process I
For a shifting the pressure P1 in the main line and the
divider bars must fall below 60 bar so that the compres-
sion spring 2.1 can relieve and press the pre-metered
amount of lubricant from the metering chamber 2.5 (Fig. 4
or 5) into the distributing chamber 2.2.
At the same time the valve 3 moves downward and pre-
vents the lubricant from flowing back into the main line
(see Fig. 7).
Shifting process II (see Fig. 8):
The compression spring 2.1 moves the piston
(2.3) downward via the spring sleeve 2.4 and shifts the lu-
bricant from the metering chamber 2.5 into the distributing
chamber 2.2.
Basic position (see Fig. 9):
When the shifting process has been completed, the QSL
metering device returns into the basic position.
The lubricant in the main line and in the QSL metering de-
vice is relieved from pressure.
The indicator pin 1 is retracted again.
