SKF UC User manual

UC
ENUC and UD Gear pump unit Assembly instructions acc. to EC Dir. 2006/42/EC
for partly completed machinery with associated operating instructions
Version 05
for hydraulic or circulating-oil lubrication systems
UD

Page 2
EN Notes
UD and UC Gear pump unit
Masthead
These original assembly instructions with
associated operating instructions in accor-
dance with EC Machinery Directive 2006/42/EC
are an integral part of the described product
and must be kept for future use.
These original assembly instructions with
associated operating instructions have been
prepared in accordance with the established
standards and rules for technical documenta-
tion, VDI 4500 and EN 292.
© SKF Lubrication Systems Germany GmbH
This documentation is protected by copyright.
SKF Lubrication Systems Germany GmbH
reserves all rights, including those to the
photomechanical reproduction, duplication,
and distribution by means of special proce-
dures (e.g., data processing, data media, and
data networks) of this documentation in whole
or in part.
Subject to changes in contents and technical
information.
Service
If you have technical questions, please contact
the following addresses:
SKF Lubrication Systems Germany GmbH
Berlin Plant
Motzener Strasse 35/37
12277 Berlin
Germany
Tel. [phone]
Fax [phone]
www.skf.com/lubrication
Hockenheim Plant
2. Industriestrasse 4
68766 Hockenheim
Germany
Tel. [phone]
Fax [phone]
www.skf.com/lubrication

Page 3 EN
Table of contents
Table of contents
Assembly instructions
UC and UD Gear pump unit 1
Service 2
Explanation of symbols and signs 5
1. Safety instructions 7
1.1 Intended use 7
1.2 Authorized personnel 7
1.3 Electric shock hazard 8
1.4 System pressure hazard 8
1.5 Compressed air hazard 8
1.6 Hydraulic pressure hazard 8
1.7 Explosion protection information 9
2. Lubricants 10
2.1 General information 10
2.2 Selection of lubricants 10
2.3 Approved lubricants 11
2.4 Lubricants and the environment 11
2.5 Lubricant hazards 12
3. Overview 12
4. Assembly 13
4.1 Setup and attachment 13
4.1.1 Assembly of the gear pump unit 14
4.2 UC/UD Assembly drawing 15
4.2.4 Use 16
4.2.5 Design 17
4.2.6 Series 1: Qnominal up to 3 l/min 18
4.2.7 Series 2: Qnominal up to 10.8 l/min 22
4.2.8 Series 3: Qnominal up to 36 l/min 28
4.3 Electrical motor connection 35
4.4 Lubrication line connection 36
4.4.1 Lubricant filling 36
4.5 Note on the nameplate 38
4.6 Information on CE marking 38
Operating instructions 39
1. Safety instructions 40
2. Lubricants 40
3. Transport, delivery, and storage 41
3.1 Lubrication units 41
3.2 Electronic and electrical devices 41
3.3 General notes 41
4. Assembly 42
4.1 Information on assembly 42
4.2 Assembly of pump unit 42
4.3 Housing versions 42
4.4 Dismantling and disposal 42
5. Design and function 43
5.1 General information43
5.2 Design and mode of operation of
the gear pump unit 43
6. Commissioning 44
6.1 Condition on delivery 44
6.2 Commissioning 44
7. Shutdown 45
7.1 Temporary shutdown 45
7.2 Permanent shutdown 45
8. Maintenance 46
8.1 General information 47
9. Malfunction 48
9.1 Commissioning malfunctions 49
10. Accessories 50
11. Spare parts 55

Page 4
EN
EC Declaration of Incorporation acc. to Machinery Directive 2006/42/EC, Appendix II Part 1 B
The manufacturer, SKF Lubrication Systems GmbH, Hockenheim Plant, 2. Industriestrasse 4, DE - 68766 Hockenheim, hereby declares the conformity of
the partly completed machinery
Designation: Gear pump units
Type: UD* / UC*
Item number: 715-*
Year of manufacture: See rating plate
with the essential protection requirements of Machinery Directive 2006/42/EC at the time of placing on the market.
1.1.2 · 1.1.3 · 1.3.2 · 1.3.4 · 1.5.1 · 1.5.6· 1.5.8 · 1.5.9 · 1.6.1 · 1.7.1 · 1.7.3 · 1.7.4
The technical documentation described in Annex VII, part B of this Directive has been prepared. We undertake to transmit, in response to a reasoned request
by the national authorities, the special documents for this partly completed machine. The Head of Technical Standards is the authorized representative for
the technical documentation. See the manufacturer information for the address.
Furthermore, the following Directives and (harmonized) standards were applied in the applicable areas:
2011/65/EU RoHS II
2014/30/EU Electromagnetic Compatibility | Industry
Standard Edition Standard Edition Standard Edition Standard Edition
DIN EN ISO 12100 2011 DIN EN 60947-5-1 2010 DIN EN 61000-6-2 2006 DIN EN 61000-6-4 2011
DIN EN 809 2012 DIN EN 61131-2 2008 Correction 2011 DIN EN 60947-5-1 2010
DIN EN 60204-1 2007 Correction 2009 DIN EN 61000-6-3 2011
Correction 2010 DIN EN 60034-1 2015 Correction 2012
DIN EN 50581 2013 DIN EN 61000-6-1 2007
The partially completed machinery must not be put into service until the machinery into which it is to be incorporated has been declared in conformity with
the provisions of Machinery Directive 2006/42/EC and all other applicable Directives.
Hockenheim, 2016,04,25
Jürgen Kreutzkämper
Manager R&D Germany
SKF Lubrication Business Unit
Stefan Schürmann
Manager R&D Hockenheim/Walldorf
SKF Lubrication Business Unit
EC Declaration of Incorporation

Page 5 EN
Informational symbolsIndicators used with safety instructions
and their meaning
Hazard symbols
Explanation of symbols
Explanation of symbols and signs
You will find these symbols, which warn of
specific dangers to persons, material assets, or
the environment, next to all safety instructions
in these operating instructions.
Please heed these instructions and proceed
with special care in such cases. Please forward
all safety instructions to other users.
General hazard
DIN 4844-2-W000
Electrical voltage/current
Hot surface
Indicator Use
Danger! Danger of bodily injury
Warning! Danger of damage to prop-
erty and the environment
Note! Provides additional
information
Note
Prompts an action
Used for itemizing
Points out other facts, causes, or
consequences
Provides additional information
Instructions placed directly on the machines/
grease lubrication pump units, such as:
Arrow indicators
Labels for fluid connections
must be followed and kept in a fully legible
condition.
You are responsible!
Please read the assembly and operating
instructions thoroughly and follow the safety
instructions.
Danger of being drawn into machinery
DIN 4844-2-W008
DIN 4844-2-W026
BGV 8A
Slipping hazard
DIN 4844-2-W028
Warning of potentially explosive
atmosphere
DIN 4844-2-W021

Page 6
EN Assembly instructions
A ssembly ins truc tions
according to Machinery
Directive 2006/42/EC,
Annex VI
The assembly instructions fulfill the Machinery
Directive indicated above with regard to partly
completed machinery. Partly completed ma-
chinery, which includes the product described
herein, is only intended to be incorporated into
or assembled with other machinery or other
partly completed machinery or equipment,
thereby forming machinery to which the
above-mentioned Directive applies.

Page 7 EN
Assembly instructions
The operator of the described product
must ensure that the assembly instruc-
tions are read and understood by all
persons responsible for assembly, op-
eration, maintenance, and repair of the
product. The assembly instructions
must be kept readily available.
Note that the assembly instructions
form part of the product and must ac-
company the product if sold to a new
owner.
1. Safety instructions
In addition to the assembly instructions,
statutory regulations and other general
regulations for accident prevention and
environmental protection must be ob-
served and applied.
1.2 Authorized personnel
Only qualified technical personnel may install,
operate, maintain, and repair the products de-
scribed in the assembly instructions. Qualified
technical personnel are persons who have
been trained, assigned and instructed by the
operator of the final product into which the
described product is incorporated. Such persons
are familiar with the relevant standards, rules,
accident prevention regulations, and assembly
conditions as a result of their training, experi-
ence, and instruction. They are authorized to
identify and perform necessary actions while
avoiding any risks which may arise.
The definition of qualified personnel and the
prohibition against employing non-qualified
personnel are laid down in DIN VDE 0105 and
IEC 364.
The described product is manufactured in accor-
dance with the generally accepted rules and
standards of industry practice and with occupa-
tional safety and accident prevention regulations.
Risks may, however, arise from its usage and
may result in physical harm to persons or dam-
age to other material assets. Therefore the
product may only be used in proper technical
condition and in observance of the assembly
instructions. In particular, any malfunctions
which may affect safety must be remedied
immediately.
1.1 Intended use
The UC and UD gear pump units are vertically
or horizontally arranged units that are used in
hydraulic or circulating-oil lubrication systems.
All off-the-shelf lubricants and hydraulic oils
in the viscosity range of between 20 and
1000 mm2/s are conveyed.
The use of synthetic oils requires prior approval
from SKF Lubrication Systems Germany GmbH.
Any other usage is deemed non-compliant
with the intended use.

Page 8
EN Assembly instructions
Depending on the model design, the product
may be able to be operated with compressed
air. Through the use of the appropriate com-
pressed air quality class, compressed air prep-
aration can be optimized and machine down-
time and higher maintenance costs avoided.
The compressed air to be used here must
comply with at least quality class 5 as defined
by ISO 8573-1:
Max. particle size 40 µm
Max. particle density 10mg/m³
Pressure dew point 7°C
Water content max. 7800 mg/ m³
Residual oil content max. 25 mg/ m³
1.4 System pressure hazard
Lubrication systems are pressurized
during operation. Centralized lubrication
systems must therefore be depressur-
ized before starting assembly, mainte-
nance or repair work, or any system
modifications or system repairs.
1.5 Compressed air hazard
The described product is pressurized
during operation. The product must
therefore be depressurized before
starting assembly, maintenance or repair
work, or any system modifications or
system repairs. 1.6 Hydraulic pressure hazard
The described product is pressurized
during operation. The product must
therefore be depressurized before
starting assembly, maintenance or re-
pair work, or any system modifications
or system repairs.
1.3 Electric shock hazard
Electrical connections for the described product
may only be established by qualified and
trained personnel authorized to do so by the
operator, and in observance of the local condi-
tions for connections and local regulations
(e.g., DIN, VDE). Significant bodily injury and
property damage may result from improperly
connected products.
Danger!
Work on products that have not been
de-energized may result in bodily injury.
Assembly, maintenance and repair work
may only be performed on products
that have been de-energized by quali-
fied technical personnel. The supply
voltage must be switched off before
opening any of the product's
components.

Page 9 EN
Assembly instructions
1.7 Explosion protection information
Danger!
Only the pump models tested and ap-
proved by SKF Lubrication Systems
Germany GmbH in accordance with
ATEX Directive 2014/34/EU are per-
mitted to be used in areas with explo-
sion protection. The relevant class of
protection is engraved on the pump's
nameplate.
When filling lubricant into the pump,
make sure the lubricant is clean. The res-
ervoir must be filled in good time (pay at-
tention to fill level monitoring). Lubricant
must be filled only via the filler socket
G 3/8“ (FF) or G 1/2“ (FB) on the pump
flange. Lubricant may only be filled via
the "reservoir cover" if absolutely certain
that no potentially explosive atmosphere
exists.
In case of overfilling, the excessive
amount of lubricant must be removed.
Make sure there is no potentially explosive
atmosphere when doing this.
The switching circuits of the fill level
monitor must be supplied by an intrinsically
safe circuit, e.g., through the installation
of an ATEX-compliant isolating switch by
the customer. The unit must be grounded
via a ground connection. The customer
must install adequate overload protection
for the power consumption of the motor.
To avoid electrostatic discharge, lay
hydraulic connecting lines in corrosion-
resistant metal tubing, e.g., stainless steel
pipe.
When setting up the pump, make sure
the setup location is level and not subject
to vibrations or jolts.
During maintenance work, use only tools
intended for use in potentially explosive
spaces or else make certain that there is
no potentially explosive atmosphere
present.
The service life of the oil lubrication pump
is limited. It must therefore undergo a
function and leak test at regular intervals.
Perform appropriate repairs in the event
of malfunctions, leaks, or rust. Replace
the pump if necessary.
The user must make sure through the
choice of the lubricant to be delivered that
no chemical reactions capable of serving
as ignition sources will occur in conjunction
with the explosive atmospheres expected.
The lubricant’s ignition temperature has to
be at least 50 kelvin above the pump’s
maximum surface temperature
(temperature class).

Page 10
EN Assembly instructions
2. Lubricants
2.1 General information
All products from SKF Lubrication
Systems may be used only for their in-
tended purpose and in accordance with
the information in the product's assembly
instructions.
Intended use is the use of the products for the
purpose of providing centralized lubrication/
lubrication of bearings and friction points using
lubricants within the physical usage limits
which can be found in the documentation for
the devices, e.g., assembly instructions/operating
instructions and the product descriptions, e.g.,
technical drawings and catalogs.
Hazardous materials of any kind, especially
the materials classified as hazardous by CLP
Regulation EC 1272/2008, annex 1, parts
2-5, may be filled into SKF centralized lubri-
cation systems and compo-nents and deliv-
ered and/or distributed with the such systems
and components only after consulting with
and obtaining written approval from SKF.
No products manufactured by SKF Lubrication
Systems are approved for use in conjunction
with gases, liquefied gases, pressurized gases
in solution, vapors, or such fluids whose vapor
pressure exceeds normal atmospheric pres-
sure (1013 mbar) by more than 0.5 bar at
their maximum permissible temperature.
Other media which are neither lubricants nor
hazardous substances may only be fed after
consultation with and written approval from
SKF Lubrication Systems Germany AG.
SKF Lubrication Systems Gertmany AG considers
lubricants to be a component of the system
design which must be factored into the selec-
tion of components and the design of central-
ized lubrication systems. The lubricating prop-
erties of the lubricants are critically important
in these considerations.
2.2 Selection of lubricants
Observe the instructions from the
machine manufacturer regarding the
lubricants that are to be used.
Warning!
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
lubrication, which can lead to damage
and failure of the bearing.
The selection of a lubricant suitable for the
lubrication task is made by the machine/
system manufacturer and/or the operator of
the machine/system in cooperation with the
lubricant supplier.
The bearings/friction points that require lubri-
cation, their expected load during operation, and
the expected ambient conditions are taken
into account during selection, with consider-
ation of economic and environmental aspects.

Page 11 EN
Assembly instructions
2.4 Lubricants and the environment
Lubricants can contaminate soil and
bodies of water. Lubricants must be
properly used and disposed of. Observe
the local regulations and laws regarding
the disposal of lubricants.
It is important to note that lubricants are envi-
ronmentally hazardous, flammable substances
that require special precautionary measures
during transport, storage, and processing.
Consult the safety data sheet from the lubricant
manufacturer.
Where necessary, SKF Lubrication
Systems supports customers in the
selection of suitable components for
feeding the selected lubricant and in
the planning and design of a centralized
lubrication system.
Please contact SKF Lubrication Systems if you
have further questions regarding lubricants.
Lubricants can be tested in the company's lab-
oratory for their suitability for pumping in cen-
tralized lubrication systems (e.g., "bleeding").
You can request an overview of the lubricant
tests offered by SKF Lubrication Systems from
the company's service department.
2.3 Approved lubricants
Only lubricants approved for the product
may be used. Unsuitable lubricants can
lead to failure of the product and damage
to property.
Different lubricants must not be mixed,
as mixing may result in damage and
necessitate costly and complicated
cleaning of the product/lubrication sys-
tem. It is recommended that an indication
of the lubricant in use be attached to
the lubricant reservoir in order to prevent
accidental mixing of lubricants.
The product described here can be operated
using lubricants that meet the specifications in
the technical data. Depending on the product
design, these lubricants may be oils, fluid
greases, or greases.
Oils and base oils may be mineral, synthetic,
and/or rapidly biodegradable. Consistency
agents and additives may be added depending
on the operating conditions.
Note that in rare cases, there may be lubricants
whose properties are within permissible limit
values but whose other characteristics render
them unsuitable for use in centralized lubrication
systems. For example, synthetic lubricants
may be incompatible with elastomers.

Page 12
EN Assembly instructions
3. Overview
Components of the unit
Item description
1 Electric motor with terminal box
2 Pump skirt with coupling
3 Gear pump
For information regarding transport, storage,
processing, and environmental hazards of the
lubricant that will be used.
The safety data sheet for a lubricant can be
requested from the lubricant manufacturer.
2.5 Lubricant hazards
Centralized lubrication systems must
always be free of leaks. Leaking lubricant
is hazardous due to the risk of slipping
and injury. Beware of any lubricant
leaking out during assembly, operation,
maintenance, and repair of centralized
lubrication systems. Leaks must be
sealed without delay.
Lubricant leaking from centralized lubrication
systems is a serious hazard. Leaking lubricant
can create risks that may result in physical
harm to persons or damage to other material
assets.
Follow the safety instructions on the lu-
bricant's safety data sheet.
Lubricants are hazardous substances. The
safety instructions on the lubricant's safety
data sheet must be strictly followed. The safety
data sheet for a lubricant can be requested
from the lubricant manufacturer.
Fig. 1 Components of the UD unit
1
2
3

Page 13 EN
Assembly instructions
Components of the unit
Item description
1 Electric motor with terminal box
2 Gear pump with coupling
1
2
4. Assembly
4.1 Setup and attachment
The product should be protected from humidity
and vibration, and should be mounted so that
it is easily accessible, allowing all further in-
stallation work to be done without difficulty.
Make sure there is adequate air circulation to
prevent the product from overheating. For the
maximum permissible ambient temperature,
see "Technical data."
There are no restrictions with regard to the
mounting position of all the units.
During assembly and especially when drilling,
always pay attention to the following:
Existing supply lines must not be dam-
aged by assembly work.
Other units must not be damaged by as-
sembly work.
The product must not be installed within
range of moving parts.
The product must be installed at an ad-
equate distance from sources of heat.
Maintain safety clearances and comply
with local regulations for assembly and
accident prevention.
Fig. 2 Components of the UC unit

Page 14
EN Assembly instructions
The gear pump unit must be installed on a
level surface. The base plate must not be under
stress. Sufficient space must be provided dur-
ing installation for later servicing and mainte-
nance work.
4.1.1 Assembly of the gear pump unit
Warning!
When drilling the assembly holes, you
must be careful of any supply lines or
other units, as well as of other hazards
such as moving components.
Maintain safety clearances and comply
with local regulations for assembly and
accident prevention.
There are no restrictions with regard to the
mounting position of all the units.
When UC units are to be mounted lower
than the maximum liquid level, additional
sealing of the flange face is required
(refer to version key).
Warning!
The torque of the fastening screws de-
pends on the customer’s installation.
Make sure that torque is adequate
when installing the base plate!

Page 15 EN
Assembly instructions
UC and UD Gear pump unit
4.2 UC/UD Assembly drawing
UC UD
UC

Page 16
EN Assembly instructions
The gear pump units are manufactured in
3 assemblies:
Series 1 is approved for very high viscosities
up to 1.000 mm2/s. They are characterized by
their simple and small design, and are accord-
ingly inexpensive. They are particularly suited
for small hydraulic and lubrication systems that
require volumetric flows between
0.06 l/min and 3 l/min for operating pressures
between 25 bar and 60 bar.
Series 2 and series 3 meet high requirements
in terms of volumetric flow, operating pressure
and efficiency. While series 2 has been de-
signed for volumetric flows of between 1 l/min
and 10.8 l/min, series 3 covers the range be-
tween 3.8 l/min and 36 l/min. Within the series,
the permissible operating pressure is greater
the smaller the nominal volumetric flow.
4.2.4 Use
Due to the overlapping volumetric flow ranges,
it is possible, for instance, to convey 9 l/min
using a series 2 pump in the low-pressure
range, whereas a corresponding series 3
Series 1-3 (not to scale) Fig. 1
Q [l/min]
4
0,010,020,050,030,1
213
0,20,40,30,512
51030204050100200300
4351030204050
p [bar]
Series 1
Series 2 Series 3
pump can achieve this volumetric flow in the
high-pressure range for the same efficiency.
The respective ranges of the series are shown
in a simple form in Fig. 1.

Page 17 EN
Assembly instructions
The gear pump units consist of motor, coupling,
flange and gear pump.
Series 1:
Rated motor output 0.18 kW.
Delivery volume between 0.06 l/min at 60 bar
and 3 l/min at 25 bar.
Flange size:
116 x 116 mm (vertical position) and
80 x 120 mm (horizontal position).
Note!
There is the series 1 still in more customised
implementation with an engine rated power of
0.25 kW. Calculation current is according to
him to lay out type plate.
Series 2:
Rated motor output 0.18; 0.37; 0.55 or
0.75 kW.
By combination with gear pump units of
different sizes (1.2 cm3/revolution to
8 cm3/revolution), a wide spectrum with regard
to the selection criteria volumetric flow and
operating pressure is achieved.
Delivery volume from 1 l/min at 200 bar up to
10.8 l/min at 30 bar.
Flange size:
150 x 150 mm (vertical position) and
120 x 150 mm (horizontal position).
Series 3:
Rated motor output from 0.75 kW to 4 kW.
The gear pump unit has a displacement
between 4.5 cm3/revolution and
26 cm3/revolution.
Delivery volume 3.8 l/min at 200 bar
up to 36 l/min at 45 bar.
Flange size:
205 x 205 mm (vertical position) and
180 x 220 mm (horizontal position).
4.2.5 Design

Page 18
EN Assembly instructions
UD gear pump unit, Series 1UC gear pump unit, Series 1
Ø140
Ø70Y
232
11
16A
Ø6.4
13Pg16190
116
100±0.2
8
1131513
Ø1917
100±0.2
108
60±0.211.5
817Ø707513
120
100±0.2
6Ø6.4108131580184Pg16232A
Ø140
YM10x1 connection for
pressure regulating valve
Suction port G 3/8"
Pressure port G 1/4"
M10x1 connection for
pressure regulating valve
Pressure port G 1/4" Suction port G 3/8"
View YView Y
4.2.6 Series 1: Qnominal up to 3 l/min
Dimension A
- see Page 20
Dimension A
- see Page 20

Page 19 EN
Assembly instructions
Units
Mounting position: ......... Discretionary (where UC units are installed
lower than the maximum oil level, the
customer must seal flange/machine)
Ambient temperature: ....... -15 to +40 °C
(-15 bis +55 °C 2) )
(At higher ambient temperatures, note that
there is a reduction in performance of
approx. 1% per Kelvin)
Pump
Nominal volumetric flow: .... See page 20
Type: .................... Gear pump
Design:
B 1...................... Standard gasket FPM
B 3018 .................. Pump with standard sealing for outlet
under lubricant level (only for UC)
Operating pressure:
Admission pressure ........ Max. 2 bar (special design 5 bar)
Outlet pmax ................ See page 20
Lubricant ................. Mineral oils, synthetic and environmentally
friendly oils with an operating viscosity
between 20 and 1.000 mm2/s
Suction height ............. Max. 700 mm (for max. tube Ø)
Technical data
Motor
Rated power: ............. 0.18 kW/ customized 0.25 kW
Rated voltage at 400 V ...... 0.65 A with 0.18 kW/ 0.91 A with 0.25 kW
Frequency ................ 50 Hz 1)
Type: .................... IM V18/B14 (motor can be shifted by 90°)
Frame size: ............... 63 C 90
Type of voltage: ........... 3-phase AC voltage
Rated speed .............. 1.500 min-1
Voltage tolerance: .......... ± 10%
Rated power .............. See nameplate (motor)
Protection class: ........... IP 55
Temperature class: ......... F
1) The motors are suited for a frequency of 50 or 60 Hz.
For connection with a frequency of 60 Hz, the speed and the volumetric flow
are increased by 20% (compared to the table specifications, basis
50 Hz).
2) On request -special marine application only
4.2.6 Series 1: Qnominal up to 3 l/min

Page 20
EN Assembly instructions
Technical data
Nominal
volumetric flow
p=0 [l/min]
Operating
pressure
pmax
[bar]
Dim. A
see DWG page 18
[mm]
UC
weight
[kg]
UD
weight
[kg]
0.06
60
45 7.9 6.5
0.12
0.18
0.25
0.35 39 7.9 6.5
0.50 40 8 6.6
0.75
45 8.2 6.8
1.00
1.50 50
47
8.3 6.9
2.00 35 8.4 7.0
2.5 30 8.5 7.1
3.00 25 51 8.6 7.2
4.2.6 Series 1: Qnominal up to 3 l/min