SKF OLA Series, Руководство пользователя

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6. Operation page 38
EN
6.4 Setting the lubricant flow rate
Caution!
The amount of lubricant required at a
lubrication point is specified by the
bearing or machine manufacturer. It
must be ensured that the required
quantity of lubricant is provided to the
lubrication point. The lubrication point
may otherwise not receive adequate lu-
brication, which can lead to damage and
failure of the bearing.
The quantity of lubricant an oil + air lubrication
system supplies to a bearing depends on:
)
Bearing type
)
Geometrical dimensions of the bearing
)
Speed factor
The quantity of lubricant can be adjusted to the
particular application by:
)
Changing the metering volume on the oil + air
metering unit
)
Reducing or increasing the interval time (lubri-
cating cycle sequence) of the compact unit
There is no generally applicable formula for deter-
mining the quantity of lubricant per time unit that a
bearing requires. For example, bearings with
pumping action (e.g., angular contact bearings)
require significantly more lubricant than bearings
without pumping action (e.g., cylindrical roller
bearings). The amount of lubricant required by a
bearing is generally specified by the bearing or
machine manufacturer. The amount of lubricant
required is usually indicated in mm³/h; if other units
are used, they must be converted accordingly. See
the following for information about configuring the
oil + air lubrication system for the correct metering
volume in the oil + air metering unit and setting the
lubrication interval time.
The calculation is intended to determine both the
number of pulses per second n based on the
selected metering volume d for the bearing and the
amount of lubricant required by the bearing V
oil
per
hour. The total amount of lubricant required by the
bearing per hour should be converted into as many
pulses (working cycles) per hour as possible (be
sure to follow operating mode S3).
Select the metering volume for the lubrication point
accordingly. The available metering volumes for oil
+ air metering units are listed in Table 5.
Table 5: Available metering volumes for oil + air
metering units
Metered
quantity
in mm
3
MV20X-20 MV50X
2 - X
6 - X
10 X -
20 X -
30 X -
60 X -
100 X -
160 X -