Lincoln SKF ContiMaster User manual

951-171-037-EN
Version 02
2017/10/27
EN
Assembly instructions
following machinery directive 2006/42/EC
ContiMaster
Hydraulically driven barrel pump
509-33996-1

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EN
EC Declaration of incorporation following machinery directive 2006/42/EC, annex II, part 1 B
The manufacturer, SKF Lubrication Systems Germany GmbH, Walldorf Facilities, Heinrich-Hertz-Straße 2-8, D - 69190 Walldorf, hereby declares that the
partly completed machinery
Designation: Hydraulically driven barrel pump to supply lubricants
Type: ContiMaster
Part number: 509-33996-1
Year of construction: See type identification plate
complies with the following basic safety and health requirements of the EC machinery directive 2006/42/EC at the time when first being launched in the
market.
1.1.2 · 1.1.3 · 1.3.2 · 1.3.4 · 1.3.7 · 1.3.8.2 · 1.5.3 · 1.5.6· 1.5.8 · 1.6.1 · 1.7.1 · 1.7.2 · 1.7.3
The special technical documents were prepared following Annex VII part B of this directive. Upon justifiable request, these special technical documents can be
forwarded electronically to the respective national authorities. The person empowered to assemble the technical documentation on behalf of the manufacturer
is the head of standardization, See manufacturer's address.
Standard Edition
DIN EN ISO 12100 2011
DIN EN ISO 809 2012
The partly completed machinery must not be put into service until the final machinery into which it is to be incorporated has been declared in conformity with
the previsions of machinery directive 2006/42/EC and any other applicable directives.
Walldorf, 14/08/2017
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

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Legal disclosure
Training courses
In order to provide a maximum of safety and
economic viability, SKF carries out detailed
training courses. It is recommended that the
training courses are attended. For more in-
formation please contact the respective SKF
Service address.
Copyright
© Copyright SKF.
All rights reserved.
Warranty
The instructions do not contain any informa-
tion on the warranty. This can be found in
our general terms and conditions.
Disclaimer
The manufacturer shall not be held respon-
sible for damages caused by:
○non appropriate use
faulty assembly, operation, setting, main-
tenance, repair or accidents
○use of inappropriate lubricants
○improper or late response to
malfunctions
○unauthorized modifications of the
product
○intent or negligence
○use of non-original SKF spare parts
Liability for loss or damage resulting from
the use of our products is limited to the
maximum purchase price. Liability for con-
sequential damages of whatever kind is
excluded.
Legal disclosure
Manufacturer
SKF Lubrication Systems Germany GmbH
Manufacturer's facilities
Head Office
Walldorf Facilities
Heinrich-Hertz-Str. 2-8
69190 Walldorf
Germany
Phone [phone]
Fax: [phone]
Berlin Facilities
Motzener Straße 35/37
12277 Berlin
Germany
Phone [phone]
Fax [phone]
www.skf.com/lubrication
Hockenheim Facilities
2. Industriestraße 4
68766 Hockenheim
Germany
Phone [phone]
Fax [phone]
E-mail: [e-mail]
www.skf.com/lubrication

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EN Table of contents
Table of contents
EC Declaration of incorporation following machinery
directive 2006/42/EC, ..........................................................................................2
Legal disclosure......................................................................................................3
Explanation of symbols, signs and abbreviations............................................... 6
1. Safety instructions.........................................................................8
1.1 General safety instructions....................................................................8
1.2 General behaviour when handling the product...................................8
1.3 Intended use............................................................................................ 9
1.4 Foreseeable misuse................................................................................9
1.5 Reference on Pressure Equipment Directive 2014/68/EU .............10
1.6 Modifications of the product................................................................10
1.7 Prohibition of certain activities............................................................10
1.8 Inspections prior to delivery ................................................................10
1.9 Other applicable documents................................................................10
1.10 Markings on the product......................................................................11
1.11 Notes related to the type identification plate.....................................11
1.12 Persons authorized to operate the pump ..........................................12
1.12.1 Operator.................................................................................................12
1.12.2 Specialist in mechanics ........................................................................12
1.12.3 Specialist in electrics ............................................................................12
1.13 Briefing of external technicians...........................................................12
1.14 Provision of personal protective equipment......................................12
1.15 Operation...............................................................................................12
1.16 Emergency stopping.............................................................................12
1.17 Transport, installation, maintenance, malfunctions,
repair, shutdown, disposal. ..................................................................13
1.18 Initial commissioning / daily start-up.................................................14
1.19 Cleaning .................................................................................................14
1.20 Residual risks ........................................................................................15
2. Lubricants................................................................................... 16
2.1 General information .............................................................................16
2.2 Selection of lubricants..........................................................................16
2.3 Material compatibility...........................................................................16
2.4 Temperature characteristics................................................................16
2.5 Ageing of lubricants..............................................................................17
3. Overview, functional description ................................................ 18
4. Technical data ............................................................................. 20
4.1 Mechanics..............................................................................................20
5. Delivery, returns, and storage .................................................... 22
5.1 Delivery..................................................................................................22
5.2 Returns .................................................................................................22
5.3 Storage...................................................................................................22
6. Installation.................................................................................. 23
6.1 General information .............................................................................23
6.2 Place of installation...............................................................................23
6.3 Minimum assembly dimensions .........................................................24
6.4 Adjusting the volumetric flow rate......................................................25

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Table of contents
7. Initial start-up ............................................................................ 26
7.1 Inspections prior to initial start-up.....................................................26
7.2 Inspections during initial start-up ......................................................26
8. Operation.................................................................................... 27
9. Cleaning ...................................................................................... 28
9.1 Cleaning agents.....................................................................................28
9.2 Exterior cleaning ...................................................................................28
9.3 Interior cleaning....................................................................................28
10. Maintenance ............................................................................... 29
11. Troubleshooting.......................................................................... 30
12. Repairs........................................................................................ 31
12.1 Safety instructions................................................................................31
12.2 Tools and accessories ...........................................................................32
12.3 Replacement of the angled casings ....................................................33
12.4 Replacement of the pump tube...........................................................34
12.5 Replacement of pressure-reducing valve and flow control valve....37
12.6 Replacement of the oscillating cylinder..............................................38
13. Shutdown and disposal............................................................... 41
13.1 Temporary shutdown ...........................................................................41
13.2 Final shutdown and disassembly ........................................................41
13.3 Disposal..................................................................................................41
14. Spare parts ................................................................................. 42

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EN Explanation of symbols, signs and abbreviations
Explanation of symbols, signs and abbreviations
General warning Suspended load Risk of falling Hot surfaces
Unintentional intake Crushing hazard Pressure injection Cold surfaces
Wear personal protective
equipment (goggles)
Wear personal protective
equipment (face shield)
Wear personal protective
equipment (gloves)
Wear personal protective
equipment (protective clothes)
Wear personal protective
equipment (safety shoes) General obligation
Keep unauthorized persons
away.
CE marking Disposal, recycling
Warning level Consequence Probability Symbol Meaning
DANGER Death, serious
injury imminent lChronological guidelines
WARNING Death, serious
injury possible ¡Lists
CAUTION Minor injury possible Refers to other facts, causes, or consequences
NOTICE Property damage possible
The following abbreviations may be used within these instructions. Symbols within safety notes mark the kind and source of the hazard.

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Explanation of symbols, signs and abbreviations
Abbreviations and conversion factors
re. regarding °C degrees Celsius °F degrees Fahrenheit
approx. approximately K Kelvin Oz. Ounce
i.e. that is N Newton fl. oz. fluid ounce
etc. et cetera h hour in. inch
poss. possibly s second psi pounds per square inch
if appl. if applicable d day sq.in. square inch
a.a.r. as a rule Nm Newtonmeter cu. in. Cubic inch
incl. including ml millilitre mph miles per hour
min. minimum ml /d millilitre per day rpm revolutions per minute
max. maximum cc cubic centimetre gal. gallon
min. minute mm millimetre lb. pound
etc. et cetera l litre hp horse power
e.g. for example dB (A) Sound pressure level kp kilopond
kW kilowatt > greater than fpsec feet per second
U Voltage < less than Conversion factors
R Resistance ± plus/minus Length 1 mm = 0.03937 in.
I Current Ø Diametre Area 1 cm² = 0.155 sq.in
V Volt kg Kilogram Volume 1 ml = 0.0352 fl.oz.
Wwatt rh relative humidity 1 l = 2.11416 pints (US)
AC alternating current ≈approximately Mass 1 kg = 2.205 lbs
DC: direct current = equal to 1 g = 0.03527 oz.
A ampere % per cent Density 1 kg/cc = 8.3454 lb./gal(US)
Ah Ampere hour ‰ per mille 1 kg/cc = 0.03613 lb./cu.in.
Hz Frequency [Hertz] ≥greater than Force 1 N = 0.10197 kp
nc normally closed contact ≤less than Pressure 1 bar = 14.5 psi
no normally open contact mm2square millimetre Temperature °C = (°F-32) x 5/9
N/A Not released rpm revolutions per minute Output 1 kW = 1.34109 hp
Acceleration 1 m/s² = 3.28084 ft./s²
Speed 1 m/s = 3.28084 fpsec.
1 m/s = 2.23694 mph

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EN 1. Safety instructions
1. Safety instructions
1.1 General safety instructions
○The owner must ensure that safety infor-
mation has been read by any persons en-
trusted with works on the product or by
those persons who supervise or instruct
the before-mentioned group of persons.
In addition, the owner must also ensure
that the relevant personnel are fully fa-
miliar with and have understood the con-
tents of the Instructions. It is prohibited to
commission or operate the product prior
to reading the Instructions.
○These Instructions must be kept for fur-
ther use.
○The described products were manufac-
tured according to the state of the art.
Risks may, however, arise from a usage
not according to the intended purpose
and may result in harm to persons or
damage to material assets.
○Any malfunctions which may affect safety
must be remedied immediately. In addi-
tion to these Instructions, general statu-
tory regulations for accident prevention
and environmental protection must be
observed.
1.2 General behaviour when handling the
product
○Keep unauthorized persons away.
○Wear personal protective equipment
always.
○All relevant persons must be informed
of the activity prior to starting any work.
Observe the precautionary operational
measures and work instructions.
○The product may be used only in aware-
ness of the potential dangers, in proper
technical condition, and according to the
information in these instructions.
○Familiarize yourself with the functions
and operation of the product. The speci-
fied assembly and operating steps and
their sequences must be observed.
○Any unclear points regarding proper
condition or correct assembly/ operation
must be clarified. Operation is prohibited
until issues have been clarified.
○Precautionary operational measures and
instructions for the respective work must
be observed.
○Responsibilities for different activities
must be clearly defined and observed.
Uncertainty seriously endangers safety.
○Safety-related protective and safety
equipment must not be removed, modi-
fied or affected otherwise in its function
and is to be checked at regular intervals
for completeness and function.
○If protective and safety equipment has to
be dismantled, it must be reassembled
immediately after finishing the work, and
then be checked for correct function.
○Never use parts of the centralized lu-
brication system or of the machine as
standing or climbing aids.

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1. Safety instructions
○Remedy occurring faults in the frame of
responsibilities. Immediately inform your
superior in the case of faults beyond your
competence.
1.3 Intended use
Supply of lubricants within a centralized lu-
brication system following the specifications,
technical data and limits stated in these
Instructions:
Usage is allowed exclusively for professional
users in the frame of commercial and eco-
nomic activities.
1.4 Foreseeable misuse
Any usage differing from the one stated in
these Instructions is strictly prohibited, par-
ticularly a usage:
○outside the indicated temperature range
○with non-specified means of operation
○without pressure-reducing valve and
flow-control valve
○in areas with aggressive or corrosive ma-
terials (e.g. high ozone pollution)
○in areas with harmful radiation (e. g. ion-
ising radiation)
○to supply, transport, or store hazardous
substances and mixtures in accordance
with annex I part 2-5 of the CLP regula-
tion (EG 1272/2008) and marked with
GHS01 - GHS06 and GHS08 hazard
pictograms.
○to feed, forward, or store gases, liquefied
gases, dissolved gases, vapours, or fluids
whose vapour pressure exceeds normal
atmospheric pressure (1013 mbar) by
more than 0.5 bar at the maximum per-
missible operating temperature.
○in an explosion protection zone

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EN 1. Safety instructions
1.5 Reference on Pressure Equipment
Directive
2014/68/EU
Because of its performance data the product
does not achieve the limit values defined in
Article 4 (1) (a) (i) and is therefore excluded
from the scope of application of Pressure
Equipment Directive 2014/68/EU following
Article 4 (3).
1.6 Modications of the product
Unauthorized conversions or modifica-
tions may result in unforeseeable impacts
on safety. Therefore, any unauthorized
conversions or modifications are expressly
prohibited.
1.7 Prohibition of certain activities
Due to potential sources of faults that may
not be visible or due to legal regulations
the following activities may be carried out
by manufacturer specialists or authorized
persons only:
○Repairs or changes to the drive exceeding
replacement in case of defects
1.8 Inspections prior to delivery
The following inspections were carried out
prior to delivery:
○Safety and functional tests
1.9 Other applicable documents
In addition to these instructions, the fol-
lowing documents must be observed by the
respective target group:
○Operational instructions and approval
rules
○Safety data sheet of the lubricant used
Where appropriate:
○Project planning documents
○Additional information on special ver-
sions of the pump. You will find these in
the special system documentation.
○Any documents of other components
required to set up the centralized lubrica-
tion system

1
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1. Safety instructions
1.10 Markings on the product
Warning of unintentional intake
CAUTION
PUMP PRIMING PLUG
NOT FOR RELIEVING
SYSTEM PRESSURE
Further to the findings of the
workplace risk evaluation the
operating company has to at-
tach additional markings (e. g.
warnings, signs giving orders,
prohibition signs or labelling as
specified by CLP or GHS), where
appropriate.
1.11 Notes related to the type identication
plate
The type identification plate states important
characteristics such as type designation, or-
der number, and regulatory characteristics.
To ensure that the loss of data due to an il-
legible type identification plate is avoided,
the characteristics should be entered in the
Instructions.
Sach-Nr. / Part No.:
Serie / Series Prod. Nr. / No.
Modell / Model
SKF Lubrication Systems Germany GmbH
Modell / Model:
Made in Germany D-69190 Walldorf
Sach-Nr. / Part-No.:
Serie / Series Prod. Nr. / No.

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EN 1. Safety instructions
1.12 Persons authorized to operate the
pump
1.12.1 Operator
A person who is qualified by training, know-
ledge and experience to carry out the func-
tions and activities related to normal opera-
tion. This includes avoiding possible hazards
that may arise during operation.
1.12.2 Specialist in mechanics
Person with appropriate professional educa-
tion, knowledge and experience to detect
and avoid the hazards that may arise during
transport, installation, start-up, operation,
maintenance, repair and disassembly.
1.12.3 Specialist in electrics
Person with appropriate professional educa-
tion, knowledge and experience to detect
and avoid the hazards that may arise from
electricity.
1.13 Brieng of external technicians
Prior to commencing the activities, external
technicians must be informed by the opera-
tor of the company safety provisions, the
applicable accident prevention regulations
to be maintained, and the functions of the
superordinate machine and its protective
devices.
1.14 Provision of personal protective
equipment
The operator must provide suitable personal
protective equipment for the respective
location of operation and the purpose of
operation.
1.15 Operation
The following must be observed during
commissioning and operation.
○Any information within this manual and
the information within the referenced
documents.
○All laws and regulations to be complied
with by the user.
1.16 Emergency stopping
In case of an emergency stop the pump sta-
tion by:
○Interrupting the hydraulic supply of the
pump
○Where appropriate, by other measures to
be determined by the operator.

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1. Safety instructions
○Ensure through suitable measures that
movable or detached parts are immobi-
lized during the work and that no limbs
can be caught in between by inadvertent
movements.
○Assemble the product only outside of the
operating range of moving parts, at an
adequate distance from sources of heat
or cold. Other units of the machine or ve-
hicle must not be damaged or impaired in
their function by the installation.
○Observe possible abrasion points. Protect
the parts accordingly.
1.17 Transport, installation, maintenance,
malfunctions, repair, shutdown,
disposal.
○All relevant persons must be informed
of the activity prior to starting any work.
Observe the precautionary operational
measures and work instructions.
○Carry out transport using suitable trans-
port and hoisting equipment on suitable
ways only.
○Maintenance and repair work can be
subject to restrictions at low or high tem-
peratures (e.g. changed flow properties of
the lubricant).Therefore, where possible,
try to carry out maintenance and repair
work at room temperature.

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EN 1. Safety instructions
1.18 Initial commissioning / daily start-up
Ensure that:
○All safety devices are completely available
and functional
○All connections are correctly connected
○All parts are correctly installed
○All warning labels on the product are
present completely, highly visible and
undamaged
○Illegible or missing warning labels are to
be replaced without delay
○All components used must be designed
according to the maximum operating
pressure and the maximum respectively
minimum operating temperature.
○No parts of the centralized lubrication
system may be subjected to torsion,
shear, or bending.
○Check all parts prior to their usage for
contamination and clean, if necessary.
○Lubricant lines must be primed with
lubricant prior to installation. This makes
the subsequent ventilation of the system
easier.
○Observe the specified tightening torques.
When tightening, use a calibrated torque
wrench.
○When working with heavy parts use suit-
able lifting tools.
○Avoid mixing up or wrong assembly
of dismantled parts. Mark these parts
accordingly.
1.19 Cleaning
○Risk of fire and explosion when using
inflammable cleaning agents. Only use
non-flammable cleaning agents suitable
for the purpose.
○Do not use aggressive cleaning agents.
○Thoroughly remove residues of cleaning
agents from the product.
○Steam jet and high pressure cleaners
must not be used for direct cleaning of
gaskets and flexible parts of the product.
○Mark damp areas accordingly.

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1. Safety instructions
1.20 Residual risks
Residual risk Possible in life cycle Prevention/ remedy
Personal injury/ material damage due to
falling of raised parts A B C G H K Keep unauthorized persons away. No people may remain under suspended loads. Lift parts with adequate lifting devices.
Personal injury/ material damage due to
tilting or falling of the product because of
non-observance of the stated tightening
torques
B C G
Observe the specified tightening torques. Fix the product to components with ad-
equate load-bearing capacities only. If no tightening torques are stated, apply tighten-
ing torques according to the screw size characteristics for 8.8 screws.
Personal injury/ damage to material due
to spilled or leaked lubricant B C D F G H K
Be careful when filling the reservoir and when connecting or disconnecting lubricant
feed lines. Always use suitable hydraulic screw connections and lubrication lines for
the stated pressures. Do not mount lubrication lines to moving parts or friction points.
If this cannot be avoided, use spring coils respectively protective conduits.
Burns / frostbite when having skin con-
tact with the pump surface in case of
pump operating temperatures > 60 °C
or < -20 °C
C D F G
If possible, do not operate pump in these temperature ranges If this should not be
possible: Label pump with corresponding warning label following ISO 7010 or DIN
4844-2 or take adequate measures to prevent touching. Let the pump cool down or
heat up before maintenance or repair.
Life cycles:
A = transport, B = installation, C = initial start-up, D = operation, E = cleaning, F = maintenance, G = fault, repair, H = shutdown, K = disposal

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EN 2. Lubricants
2. Lubricants
2.1 General information
Lubricants are used specifically for cer-
tain application purposes. In order to fulfil
their tasks, lubricants must fulfil various
requirements.
The most important requirements for lubri-
cants are:
○Reduction of abrasion and wear
○Corrosion protection
○Noise minimisation
○protection against contamination or
penetration of foreign objects
○Cooling (primarily with oils)
○longevity (physical/ chemical stability)
○economic and ecological aspects
2.2 Selection of lubricants
SKF considers lubricants to be an element
of system design. A suitable lubricant is se-
lected already when designing the machine
and forms the basis for the planning of a
centralized lubrication system.
The selection is made by the manufacturer
or operator of the machine, preferably to-
gether with the lubricant supplier based on
the requirement profile defined.
Should you have little or no experience with
the selection of lubricants for centralized lu-
brication systems, please contact SKF.
If required we will be glad to support cus-
tomers to select suitable components for
feeding the selected lubricant and to plan
and design their centralized lubrication
system.
You will avoid possible downtimes through
damage to your machine or system or
damage to the centralized lubrication
system.
2.3 Material compatibility
Lubricants must generally be compatible
with the following materials:
○steel, grey iron, brass, copper, aluminium
○NBR, FPM, ABS, PA, PU
2.4 Temperature characteristics
The lubricant used must be suitable for
the specific operating temperature of the
product.The viscosity required for proper
operation of the product must be adhered
to and must not be exceeded in case of low
temperatures nor fall below specification in
case of high temperatures. Specified viscosi-
ties, see chapter Technical data.

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2.Lubricants
Only lubricants specified for the
product (see chapter Technical
data) may be used. Unsuitable
lubricants may lead to a failure of
the product.
Do not mix lubricants. This may
have unforeseeable effects on
the usability and therefore on the
function of the centralized lubri-
cation system.
When handling lubricants the rel-
evant safety data sheets and haz-
ard designations, if any, on the
packaging have to be observed.
2.5 Ageing of lubricants
After a prolonged downtime of the machine,
the lubricant must be inspected prior to
re-commissioning as to whether it is still
suitable for use due to chemical or physical
ageing. We recommend that you undertake
this inspection already after a machine
downtime of 1 week.
If doubts arise as to a further suitability of
the lubricant, please replace it prior to re-
commissioning and, if necessary, undertake
initial lubrication by hand.
It is possible for lubricants to be tested in the
company's laboratory for their suitability for
being pumped in centralized lubrication sys-
tems (e.g. "bleeding").
Please contact SKF. if you have further ques-
tions regarding lubricants.
You may request an overview of the lubri-
cants tested by SKF.
Due to the multitude of possible
additives, individual lubricants,
which according to the manu-
facturer's data sheets fulfil the
necessary specification, may not,
in fact, be suitable for use in cen-
tralized lubrication systems (e. g.
incompatibility between synthetic
lubricants and materials). In
order to avoid this, always use
lubricants tested by SKF.

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EN 3. Overview, functional description
3. Overview, functional description
1 Oscillating cylinder
The oscillating cylinder is connected to the hy-
draulic system and drives the pump.
2 Flow control valve
The flow control valve serves to adjust the
volume flow rate of the hydraulic oil flowing
into the pump.
3 Pressure-reducing valve
The pressure control valve firmly set to 60 bar
serves to adjust the maximum pressure of the
hydraulic oil flowing into the pump.
.
4 Casing
Covers the flexible part between the oscillat-
ing cylinder and the pump tube. The casing
consists of two parts, each of which has an in-
spection window for function control purposes.
Overview, functional description Fig. 1
1
3
2
4

3
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3. Overview, functional description
Overview, functional description Fig. 2
5 Pump tube
The lifting strokes of the oscillating cylinder
are carried out by the pump tube as a supply
motion.
6 Suction port
Serves to take in the lubricant.
During operation the suction port is in the ma-
terial to be supplied.
7 Vent valve
Serves to remove air inclusions in the pump
tube.
8 Connection fitting for supply material
Serves to connect the supply line.
9 Base plate
Serves to install the pump tube with the oscil-
lating cylinder. 5
6
78
9

EN 4. Technical data
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4. Technical data
4.1 Mechanics
Admissible operating temperature range of the pump -40 °C to +80 °C
The specified operating temperature range of the pump presupposes the suitability of the lubricant or hydraulic oil used for the respective actually
existing operating temperature. Using an unsuitable lubricant or hydraulic oil may result in malfunctions and even in a downtime of the lubrication
system. Failure caused by the lubricant or the hydraulic oil may occur temporarily, e.g., if the application temperature stated for the lubricant or
hydraulic oil for lubrication systems is exceeded or is not reached.
Lubricants Lubricating greases of NLGI II
Admissible operating temperature range of hydraulic oil -20 °C to +80 °C
Stipulated viscosity of hydraulic oil min. 13 mm2/S max. 380 mm2/S
Required hydraulic oil filter 10 μm
Rated pressure of hydraulic oil Pmax 120 bar (factory setting 65 ± 5% bar)
Ratio 6.55:1
Back pressure 320 bar max.
Installation position Vertical1) i.e. Oscillating cylinder on top
Consumption of hydraulic oil per double stroke 308 cc
Hydraulic connection inlet G 3/8
Hydraulic connection outlet G 3/8
Lubricant outlet 3/4“ -14 NPTF inner thread
Number of double strokes Set to 12-15 per minute
Sound pressure level < 85 dB (A)
Weight of the empty pump 32.6 kg
Nominal supply volume per double stroke About 30 cc
The stated nominal outputs per double stroke refer to NLGI II lubricating greases at an operating temperature of + 20 °C.
Deviating operating conditions result in a change of the actual output volume per time unit. If an adjustment should become necessary, for logical reasons it
is made by adapting the operating pressure and the volume flow at the pressure control valve or the flow control valve.