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Pump-Transfer
Cooler Filtration Unit
UKF for Gearboxes
General
This pump transfer cooler ltration unit
(UKF) has been specially designed
for cooling and lubricating stationary
gearboxes. It consists of a gear pump,
a lter and a plate heat exchanger. Its
compact design enables quick, simple
integration into the ofine circuit.
Application Field
l Cooling and lubrication
of gearboxes
M
I
T
Symbol
Operating Data
General
Ambient temperature -20 °C to +40 °C
Mounting position Vertical
Pump
Suction pressure
across suction port
Max. -0.4 bar to 3 bar
Operating pressure (oil side) Max. 16 bar
Medium (oil side) Mineral oil to DIN 51524 Part 1 and Part 2
Temperature range (oil side) -10 °C to +80 °C
Permissible contamination
(oil side)
≤ NAS12 or ISO4406: 22/21/18
Max. viscosity 20,000 mm²/s, depending on the motor rating
Drive
Motor Three-phase electric motor
Insulation class: F
Protection class: IP 55
RPM 1,000 / 1,500 1/min (50 Hz)
Heat exchanger
Construction l Copper brazed plate heat exchanger
HYDAC HEX S (standard)
l Gasketed plate heat exchanger (on request)
Medium
(water side):
l Water glycol (HFC)
l Water
l Oils
Temperature range
(water side)
+5 °C to +60 °C
Permissible contamination
(water side)
The level of particles in suspension
should be less than 10 mg/l
Particle size <0.6 mm (spherical)
Thread-like particles cause a rapid
increase in pressure drops
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Product Features
Continuous cooling and ofine ltration
extend the service life of the oil and of
the gears. The duplex lter enables the
lter to be changed without switching
off the unit. In addition, there is an
integrated thermal bypass valve which
ensures that the system continues to run
even at low temperatures because the
cold oil is not fed through the plate heat
exchanger. Once the oil is warm enough
it can ow through the heat exchanger to
cool the unit.
To guarantee a constant oil temperature
an optional water ow controller can be
tted which supplies just enough water to
the plate heat exchanger as is necessary
to achieve the required oil temperature.
Pressure, temperature or ow rate
sensors can also be added to the control
block.
Design
Different versions are possible depending on the requirements:
UF – Feed pump with lter
UKF – Feed pump with lter and plate heat exchanger
Ofine unit consisting of:
l Gear pump
l Filter (duplex lter available as an option)
l Oil-water plate heat exchanger (brazed or gasketed)
l Thermal bypass valve (UKF-2 / UKF-3)
l The ofine circuit is tted with check valves to isolate the lter when used
with a positive head tank when changing the lter element
Flow rate: 2.5 – 14 l/min
Motor rating: 0.55 kW
Cooling capacity*: 1 – 10 kW
Flow rate: 30 – 100 l/min
Motor rating: 1.5 – 5.5 kW
Cooling capacity*: 10 – 75 kW
Flow rate: 15 – 30 l/min
Motor rating: 0.75 – 1.5 kW
Cooling capacity*: 5 – 20 kW
UKF-1
UKF-2
UKF-3
* Dependent on temperature difference and ow rate of the cold and warm medium
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Model Type
UKF-3 - 5.2 - P+V - 32 - 2.2 - 615-80 - FLND400 - 10 - D
Type
UKF = Pump + heat exchanger + lter
UF = Pump + lter
Size
1 / 2 / 3
Modication code
Seals
P+V = Static seal Perbunan + dynamic seal Viton
P = Static and dynamic seal Perbunan
Pump ow rate in ccm³/rev
Motor
0.55 kW / 0.75 kW / 1.5 kW / 2.2 kW / 4 kW
Plate heat exchanger
Size 610 – 10-100 plates
Size 615 – 10-100 plates
Other sizes and gasketed plate heat exchangers on request.
Filter
Inline lter HFM75 / FLN 250 / FLN 400
Duplex lter FLND 250 / FLND 400
with lter bypass
Filtration rating in µm
For further information on lter elements, see Filtration catalogue.
Differential pressure clogging indicator
D = VM 5 D.0 / -L24 (5 bar; visual-electrical)
Other clogging indicators on request.
For further information, see Filter Clogging Indicator brochure
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Industriegebiet
66280 Sulzbach/Saar
Germany
Tel.: +49 6897 509-01
Fax: +49 6897 509-454
E-mail: cooling@hydac.com
Internet: www.hydac.com
HYDAC COOLING GMBH
Note
The information in this brochure
relates to the operating conditions
and applications described.
For applications and/or operating
conditions not described, please contact
the relevant technical department.
Subject to technical modications
and corrections.