SKF VSG Series User manual

951-171-046
Version 01
07/11/2018
EN
Assembly Instructions
Lubricant metering devices
for dual-line systems
VSG and VSK series

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Legal notice
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.
Service address North America
SKF Lubrication Business Unit
Lincoln Industrial
5148 North Hanley Road, St. Louis,
MO. 63134 USA
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
○Faulty planning or layout of the central-
ized lubrication system
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 notice
Manufacturer
SKF Lubrication Systems Germany GmbH
e-mail: [e-mail]
www.skf.com/lubrication
Manufacturer's addresses
Walldorf Facilities
Heinrich-Hertz-Straße 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

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EN
Table of contents
Table of contents
Legal notice .................................................................................................2
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 Modifications of the product..................................................................9
1.6 Prohibition of certain activities.............................................................. 9
1.7 Painting of plastic parts.......................................................................... 9
1.8 Inspections prior to delivery .................................................................. 9
1.9 Markings on the product......................................................................10
1.10 Other applicable documents ...............................................................10
1.11 Persons authorized to operate the pump ..........................................10
1.11.1 Operator.................................................................................................10
1.11.2 Specialist in mechanics ........................................................................10
1.12 Specialist in electrics ............................................................................10
1.13 Provision of personal protective equipment......................................10
1.14 Operation...............................................................................................10
1.15 Emergency stopping.............................................................................10
1.16 Transport, installation, maintenance, malfunctions, repair,
shutdown, disposal ...............................................................................11
1.17 Initial commissioning / daily start-up.................................................12
1.18 Cleaning .................................................................................................12
1.19 Residual risks ........................................................................................13
2. Lubricants................................................................................... 14
2.1 General information .............................................................................14
2.2 Selection of lubricants..........................................................................14
2.3 Material compatibility...........................................................................14
2.4 Temperature characteristics................................................................14
2.5 Ageing of lubricants..............................................................................15
2.6 Solid lubricants .....................................................................................15
3. Overview, functional description ................................................ 16
3.1 Component designation.......................................................................16
3.2 Stage 1...................................................................................................17
3.3 Stage 2...................................................................................................17
3.4 Stage 3...................................................................................................18
3.5 Stage 4...................................................................................................18
3.6 Metering devices with an odd number of outlets..............................19
3.7 Metering device with metering screwsVSKH/V D/KD......................20
3.8 Magnetically operated function indicator...........................................21
3.8.1 Functional principle ..............................................................................21
4. Technical data ............................................................................. 22
4.1 Type identification code........................................................................23
4.1.1 Type identification code VSG/VSL.......................................................23
4.1.2 Type identification code VSG/VSL with magnetic adjustment
and magnetic metering device............................................................24
4.1.3 Type identification code for VSKH/VSKV............................................25
4.1.4 Type identification code VSKH/VSKV with magnetic a
djusting device and magnetic metering volume ...............................26
4.2 Technical data sheets ...........................................................................27
4.2.1 Lubricant metering device VSG-KR....................................................27
4.2.2 Lubricant metering device VSG-KR-FL..............................................28

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4.2.3 Lubricant metering devices VSKH, VSKV ...........................................30
4.2.4 Lubricant metering device VSKV-KR..................................................31
4.2.5 Magnetically operated function indicator...........................................32
4.2.6 Lubricant metering devices VSL-KR...................................................33
4.2.7 Lubricant metering device VSKH-KRFKM-FL Protective cap MS...34
5. Delivery, returns, and storage .................................................... 35
5.1 Delivery..................................................................................................35
5.2 Returns .................................................................................................35
5.3 Storage...................................................................................................35
5.4 Storage temperature range.................................................................35
5.5 Storage conditions for parts filled with lubricant ..............................36
5.5.1 Storage period of up to 6 months.......................................................36
5.5.2 Storage period from 6 to 18 months..................................................36
5.5.3 Storage period exceeding 18 months ................................................36
6. Installation.................................................................................. 37
6.1 General information .............................................................................37
6.2 Installation of metering devices of the VS series...............................38
6.3 Replacing adjusting sleeves KR by KRFKM (FPM) on the
VSG metering device ............................................................................39
6.4 Extension piece .....................................................................................42
6.5 Accessories ............................................................................................43
6.5.1 Cap screws for metering devices with 1 outlet per adjusting sleeve
43
6.5.2 Metering screws for KD and D variants..............................................43
6.5.3 Extension piece for straight screw-in fittings ....................................43
6.5.4 Elastic spacers ......................................................................................44
6.5.5 Check valves for metering device outlets ...........................................44
7. Start-up...................................................................................... 45
7.1 Inspections prior to commissioning....................................................45
7.2 Inspections prior to commissioning....................................................45
7.3 Adjusting the output volume ...............................................................46
7.3.1 VSG variant............................................................................................46
7.3.2 VSG-KR variant for infinitely variable adjustment and
visual function control..........................................................................47
7.3.3 D and KD variants for graduated adjustment of the output.............48
7.3.4 KS variant for visual function control and limit switch......................49
7.3.5 KR-NP variant.......................................................................................50
7.3.6 Check valves for VS metering devices.................................................50
7.4 Cross-porting of outlets (lubricant metering device type
types VSG, VSL).....................................................................................51
8. Operation.................................................................................... 52
9. Cleaning ...................................................................................... 53
9.1 Cleaning agents.....................................................................................53
9.2 Exterior cleaning ...................................................................................53
9.3 Interior cleaning....................................................................................53
10. Maintenance ............................................................................... 54

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11. Troubleshooting.......................................................................... 55
12. Repairs........................................................................................ 56
13. Shutdown and disposal............................................................... 57
13.1 Temporary shutdown ...........................................................................57
13.2 Final shutdown and disassembly ........................................................57
13.3 Disposal..................................................................................................57
14. Spare parts ................................................................................. 58
14.1 Spare parts VSKH-KR / VKSH-KR-VA ...............................................58
14.2 Spare parts VSKV-KR / VKSV-KR-VA ................................................59
14.3 Spare parts VSG-KR.............................................................................60
14.4 Spare parts VSG-KR-FL ......................................................................61
14.5 Spare parts VSL-KR .............................................................................62
14.6 Spare parts magnetically operated function indicator .....................63
14.7 Welding plate APL 11 ...........................................................................64
14.8 Welding plate APL 14 ...........................................................................65

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951-171-046
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EN Explanation of symbols, signs and abbreviations
Explanation of symbols, signs and abbreviations
General warning Dangerous electrical voltage Risk of falling Hot surfaces
Unintentional intake Crushing hazard Pressure injection Suspended load
Electrostatically sensitive
components
Potentially explosive
atmosphere
Keep unauthorized persons
away
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)
Disconnect product from
mains General obligation
Protective conductor
(protection class I)
Protection y double or rein-
forced insulation
(protection class II)
Protection by extra low
voltage (protection class III)
Safe galvanic isolation (protec-
tion class III)
CE marking Disposal, recycling Disposal of waste electrical
and electronic equipment
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
poss. possibly h hour in. inch
if appl. if applicable s second psi pounds per square inch
incl. including d day sq. in. square inch
min. minimum Nm Newtonmeter cu. in. cubic inch
max. maximum ml millilitre mph miles per hour
min. minute ml /d millilitre per day rpm revolutions per minute
etc. et cetera cm³ cubic centimetre gal. gallon
e.g. for example mm millimetre lb. pound
kW kilowatt l litre hp horse power
U Voltage dB (A) sound pressure level kp kilopond
R resistance > greater than fpsec feet per second
I current < less than conversion factors
V volt ± plus/minus Length 1 mm = 0.03937 in.
Wwatt Ø diametre Area 1 cm² = 0.155 sq.in
AC alternating current kg kilogram Volume 1 ml = 0.0352 fl.oz.
DC direct current rh relative humidity 1 l = 2.11416 pints (US)
A ampere ≈approximately Mass 1 kg = 2.205 lbs
Ah ampere hour =equal to 1 g = 0.03527 oz.
Hz frequency [Hertz] %per cent Density 1 kg/cc = 8.3454 lb./gal.(US)
nc normally closed contact ‰per mille 1 kg/cc = 0.03613 lb./cu.in.
no normally open contact ≥greater than Force 1 N = 0.10197 kp
N/A not applicable ≤less than Pressure 1 bar = 14.5 psi
ft. feet mm2square millimetre Temperature °C = (°F-32) x 5/9
rpm revolutions per minute Output 1 kW = 1.34109 hp
áIncreases a value Acceleration 1 m/s² = 3.28084 ft./s²
âReduces a value 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.
○Protect the centralized lubrication system
connected to the pump with a pressure
control valve always.
○Incorrect installation or operation may
result in damages due to poor or exces-
sive lubrication of bearings or lubrication
points.
○Use only original spare parts or parts au-
thorised by us.
1.2 General behaviour when handling the
product
○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.
○Keep unauthorized persons away.
Wear personal protective equipment
always.
○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 checked for correct function.
○Remedy occurring faults in the frame of
responsibilities. Immediately inform your
superior in the case of faults beyond your
competence.

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1. Safety instructions
1.3 Intended use
Providing lubrication points with lubricant
in dual-line lubrication systems 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 ambient tempera-
ture range.
○with non-specified means of operation
○without adequate pressure control valve.
○of C3 versions in areas with aggressive
and corrosive materials (e.g. with high
salt concentration).
○of plastic parts in areas with high ozone
levels or in areas with harmful radiation
(e.g. ionising 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) or HCS 29 CFR
1910.1200 marked with GHS01-GHS06
and GHS08 hazard pictograms.
○in an explosion protection zone.
1.5 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.
1.6 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 of or changes on the pistons of
the lubricant metering devices.
1.7 Painting of plastic parts
Painting of any plastic parts or seals of the
described products is expressly prohibited.
Remove or tape plastic parts completely be-
fore painting the superior machine
1.8 Inspections prior to delivery
The following inspections were carried out
prior to delivery:
○Safety and functional tests

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1.9 Markings on the product
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.
1.10 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. You will find these in the special
system documentation
○Any documents of other components
required to set up the centralized lubrica-
tion system
1.11 Persons authorized to operate the
pump
1.11.1 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.
1.11.2 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 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 Provision of personal protective
equipment
The operator must provide suitable personal
protective equipment for the respective
location of operation and the purpose of
operation.
1.14 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 that the operator
must observe.
1.15 Emergency stopping
In case of an emergency stop the pump sta-
tion by:
○Interrupting the power supply to the
pump.
○Where appropriate, using measures
determined by the operator, such as ac-
tuating the emergency stop switch of the
superior machine.

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1. Safety instructions
hicle must not be damaged or impaired in
their function by the installation.
○Dry or cover wet, slippery surfaces
accordingly.
○Cover hot or cold surfaces accordingly.
○Do not touch cables or electrical compo-
nents with wet or damp hands.
○Carry out works on electrical components
only while the system is depressurized
and use voltage isolated tools suitable for
electrical works only
○Undertake drilling at non-critical, non-
load bearing parts only. Use any available
boreholes. Do not damage lines and ca-
bles when drilling.
○Observe possible abrasion points. Protect
the parts accordingly.
○Fill lubrication lines with lubricant prior to
connecting them to the metering device.
1.16 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.
○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.
○Before carrying out any work, depressur-
ize the product and the machine in which
the product is to be installed and secure it
against unauthorised switching on. Take
suitable measures to ensure that moving,
detached parts are blocked during work
and that no limps can be trapped by un-
intentional 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-

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1.18 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.
○Do not use steam jet and high pressure
cleaners. Electrical components may be
damaged.
○Mark damp areas accordingly.
○All components used must be designed
according to the maximum operating
pressure and the maximum respectively
minimum ambient temperature.
○Check all parts prior to their usage for
contamination and clean, if necessary.
○Observe the specified tightening torques.
When tightening, use a calibrated torque
wrench.
○Avoid mixing up or wrong assembly
of dismantled parts. Mark these parts
accordingly.
1.17 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

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1. Safety instructions
1.19 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 K Observe the specified tightening torques. Fix the product only to components with
sufficient load capacity.
Personal injury or damage to material
due to leaked lubricant B C D E F G K
Be careful when connecting or disconnecting lubricant feed lines. Always use suit-
able 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.
Tearing or damaging of lines when in-
stalled on moving machine parts C D If possible, do not install on moving parts. If this cannot be avoided, use flexible hose lines.
Lubricant spraying out due to faulty
component fitting or line connection C D F G Use suitable hydraulic screw connections and lines for the stated pressures. Check these prior to commissioning for correct connection and damage.
Injury of persons because of loosening of
the impressed balls when using C3 ver-
sion in a strongly corrosive environment.
D E F G H Only metering devices in C5 design are allowed to be used in corrosive
environments.
Loss of the function of the visual function
indicator in areas with magnetic respec-
tively magnetizable chips/dusts.
DUse the visual function indicator only in areas without magnetic or magnetizable
chips/dusts.
Life phases:
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, PUR
2.4 Temperature characteristics
The lubricant used must be suitable for the
specific ambient 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 viscosities, see
chapter Technical data.

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2.Lubricants
w
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
lubrication system.
When handling lubricants the
relevant safety data sheets and
hazard 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.
2.6 Solid lubricants
Lubricants containing solid lubricants may
have a negative influence on the wear be-
haviour of centralized lubrication systems.
For this reason, such lubricants must be
checked in each individual case before use.
Please contact us for this purpose.

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EN 3. Overview, functional description
3. Overview, functional description
3.1 Component designation
Fig. 1: Component designation
1 - Control piston 4 - Channel
2 - Channel 5 - Channel
3 - Supply piston 6 - Channel
I - Main line 1 II - Main line 2

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3. Overview, functional description
Fig. 2: Stage 1
3.2 Stage 1
Lubricant is fed to the metering device under pressure
through main line I.
Control piston (Fig. 2: Pos. I) starts moving into the direction of
the arrow (A) and pushes the lubricant in front of the control
piston back through the relieved main line II (Fig. 2: Pos. II).
Fig. 3: Stage 2
3.3 Stage 2
When the control piston (Fig. 3: Pos. 1) has released the chan-
nel (Fig. 3: Pos. 2), lubricant reaches the left front side of the
supply piston (Fig. 3: Pos. 3) and moves it towards the left side
into the direction of the arrow (A).
The lubricant in front of the supply piston is now fed to the
lubrication point through the channel (Fig. 3: Pos. 4). As soon
as the supply piston has reached its final position, the pressure
in main line I rises up to the adjusted change-over pressure of
the dual-line system.
Now the change-over device of the dual-line system connects
the currently pressurized main line I with the pump’s lubricant
reservoir. As a consequence the lubricant in the line is relieved
and the pressure falls.

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Fig. 4: Stage 3
3.4 Stage 3
At the same time the change-over device connects main line II
with the pump. The pressure in line II rises.
The control piston (Fig. 4: Pos.1) now moves in the direction
of the arrow (B). As a consequence the lubricant in front of the
control piston is fed to the relieved main line.
Fig. 5: Stage 4
3.5 Stage 4
When the control piston (Fig. 5: Pos. 1) has released the chan-
nel (Fig. 5: Pos. 5), lubricant reaches the left front side of the
supply piston (Fig. 5: Pos. 3) and moves it towards the right
side into the direction of the arrow (B).
The lubricant in front of the supply piston is now fed to the lu-
brication point through the channel (Fig. 5: Pos. 6). As soon as
the supply piston has reached its final position, the pressure in
main line II rises up to the adjusted change-over pressure of
the dual-line system.
Another change in pressure taks place in main lines I and II.
Then the procedure repeats from stage 1 again.

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EN
3. Overview, functional description
Fig. 6: Metering devices with an odd number of outlets VSKH
3.6 Metering devices with an odd number of outlets
In case of metering devices with an odd number of outlets the
two opposite outlets are connected by a connection channel
(Fig. 6: Pos. 2).
The opposite outlet is closed by means of a cap screw. The
output volume is double that of one outlet, as the lubricant
volumes are cross-ported. If this is not wanted, the output
volume of this pair of outlets must be regulated down accord-
ingly (for the same output volume down to half of the output).
The cap screw can be mounted on the other side, if required
by the installation conditions.
Fig. 7: Metering devices with an odd number of outlets VSKV
If in case of metering devices with an even number
of outlets one outlet is closed, the opposite outlet
will block and no lubricant will dispensed. The other
outlets will still be provided with lubricant.
1 - Cap screw
2 - Connection channel

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951-171-046
Version 01
EN 3. Overview, functional description
Fig. 8: Metering devices with metering screws VSKH/V D
3.7 Metering device with metering screws VSKH/V D/KD
VSKH/VSKV VSG VSL
0.30 0.55 1.25
0.60 1.10 2.50
1.20 1.65 3.75
1.50 2.20 5.00
Variants for the output volume adjustment. All metering de-
vices of the VS series can be supplied with metering screws as
version D or with metering screws and indicator pin as version
KD.
The metering screws limit the stroke of the working piston.
The longer the metering screw, the lower the output volume.
Unless stated otherwise in the order, the metering devices are
supplied with metering screws for maximum supply. Fig. 9: Metering devices with indica-
tor pin and metering screw VSKH/V KD