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Safegrease 2Automatic lubrication system
SKF grease lubrication systems for trouble-free production
Accurate lubrication prevents damages and shutdowns caused by inadequate lubrication. The service
life of process equipment and machinery is extended and energy consumption and the used amount
of lubricant are reduced. Thanks to automation, optimum lubrication is achieved and the burden on
the environment is minimised. All this brings savings.
Automation increases work safety, as running machinery does not have to be lubricated manually.
In addition to all this a centralised lubrication system increases the runnability of production processes.
Lubricant inflow from line 1 To lubrication point A Lubricant inflow from line 2 To lubrication point B
2
Control centres
The SKF control centres can be used for con-
trolling many individual lubrication channels,
each having independent lubrication cycles
and/or lubricants.
The ST-105 control centre is integrated to the MaxiLube pumping centre and it can be used for controlling max. two lubrication channels
The ST-1440 control centre can be used for controlling max. 14 lubrication channels. The ST-1340 control centre can be used for controlling four lubrication channels.
Control and monitoring
Technical specifications, Control centres
Operation temperaturet = 0 to +60 °C (32 to 140 °F) ST-1440: Control voltage,regulated 10 A maxUout = 24 V DC
ST-1340: Control voltage,regulated 5 A maxUout = 24 V DC ST-1440: Power Input, 250 W maxUin = 230 V ?15 %, 50/60 Hz 115 V ?15 %, 50/60 Hz
ST-1340: Power Input, 150 W maxUin = 100 to 240 V AC, 50/60 Hz
Automatic fuseF = 6 A Protection classificationIP65
CH 1…14
max 2-14
3
Technical specifications, LG-Ind
Operation temperaturet = -20 to +70 °C (–4 to 158 °F)
Control voltageU = 24 V DC
Protection classificationIP 67
Connections4-pole M12 male connectorInputs: Control voltage 24 V DCOutputs: Potential-free relay contact
LG-Ind – doser operation indicator
MaxiLube – pumping centre
The MaxiLube pumping centre combines the
previously separate components of hydraulic
and control units. The hydraulic unit includes
the solenoid and control valve groups and
the pressure gauge for the lubrication lines.
The pumping centre is equipped with a com-
pressed air regulator. The MaxiLube pumping
centre is controlled and monitored by an inte-
grated control unit, ST-105. It can also be
controlled and monitored by a separate con-
trol unit or with SMS messages.
Technical specifications, MaxiLube pumping centre
Operation temperaturet = 0 to +50 °C (+32 to +122 °F)
ControlU = 24 V DC
Power inputUin = 230 ±15 %; 50/60 Hz 115 ±15 %; 50/60 Hz
Pressure rangep = 4-7 bar (60-100 psi)
ConnectionsInputs: compressed air (1 pcs), pipe † 12 mm († 1/2 in.)Outputs: lubricant (2 pcs), pipe † 12 mm or († 1/2 in.)
SMS service
The SKF control centres can be equipped with
SMS connection. This way the
MaxiLube pumping centre, the ST1340 or
ST1440 control centres can be controlled
with SMS messages. The connection is
created between a GSM modem installed
in the pumping or control centre and a
GSM mobile phone.
LG-ind is a doser operation indicator for SGA-
and SG-dosers in a dual-line Safegrease 2
central lubrication system. The sensor of
LG-ind operation indicator senses the move-
ment of the doser piston. The sensor senses
the piston moving towards the sensor in
which case the relay contact of the electronic
part closes.
The status of the doser operation indicator
can be seen from the LED-signals of the elec-
tronic part:
yellow LED signal A: waiting status,
relay contact is open
green LED-signal B: sensing status,
relay contact is closed.
Possible alarms to the control centre. Two
possible operation modes: pulse operation
mode and latching operation mode.
•
•
4
Online system
Online System is a database application
designed for controlling, monitoring and
analysing a lubrication system. The maximum
number of control centres connected to the
system is 20.
The application can be run from PCs which
are connected into the control centre by direct
cable or by Ethernet. The application has two
main functions:
System control – online
Analyzing the history data of the centre.
Online -function enables the user to moni-
tor system operation online: starting extra
lubrication cycles, resetting alarms and set-
ting the set values for the centre and the
lubrication channels.
The system settings can be saved into a file
and they can be restored as the set default
values for the system, if necessary.
•
•
Control centres
Control centre 1440
The versatile control centres enable the mon-
itoring of the largest systems from a single
convenient location. State-of-the-art multi-
channel control centres are also available,
so one single controller may handle several
lubrication systems or one system can be
divided into several individual lubrication
channels, which may have independent lubri-
cation schedules and/or lubricants.
Pumping centre MaxiLube
A pumping centre comprises of a hydraulic
part and a barrel pump and their auxiliary
equipment. The centre is equipped with a
compressed air regulator/oiler assembly and
a grease filter. The hydraulic part includes
a solenoid valve group and a control valve
group. The solenoid valves control the pump
and control valve operation. The pump is
delivered with the following additional pieces
of equipment: lid set, follower plate, barrel low
level switch and an air gun for lifting the fol-
lower plate (optional).
5
Dosing module group with pressure transmitter
Dosing module groups
Shut-off valve
The dosing modules are hydraulically oper-
ated piston units and they are installed onto
base plates. Because of this construction,
various dosing module groups can be built.
There are six basic sizes of modules, covering
all industrial needs from small joints to large
roller bearings. Dosing modules are made
of zinc-coated and yellow-passivated steel or
stainless steel AISI-316. The base plates are
made of aluminium or stainless steel AISI-
316. The base plates contain built-in check
valves to ensure the precise dosage distribu-
tion. Standard base plates are available for
groups of 1 to 6 dosers.
In the grease lubrication system, the lubrica-
tion channels controlled by one pumping cen-
tre are separated from each other with shut-
off valves. The shut-off valve can also be used
directly from the machine to be lubricated
(interlocking), if needed. When the machine
to be lubricated starts, it opens the valve and
makes it possible to lubricate the machine
during pressurisation.
Pressure control unit
The pressure switch/transmitter assembly is
the adjusting and control unit of the operating
pressure in a centralised lubrication system.
Spray nozzle
The compressed-air assisted spray nozzle,
designed for applying the lubricant onto
the lubricated object, such as trunnions,
bull gears, chains, etc.
Tubing and installation
Tubing is an essential part of the lubrication
system. The system’s reliability and durability
depend on correct dimensioning and selection
of tubing material.
6
Designation system for MaxiLube pumping centre
Example: MAX-1-2-230-IF105-R-M MAX - 1 - 2 - 230 - IF103 - R - M
Identification of product design
MAX MaxiLube Pump
Identification of number of channels
1 Single channel2 Dual channels
Identification of number of lines
1 Single line system2 Dual line system
Identification of power supply
24 24 V control voltage if external control is used115 Power input 115 V230 Power input 230 V
Identification of user interface
IF105 User interfaceX External control
Identification of threads
R R-threadsU NPT-threads
Identification of functions
A Standard modelM SMS-control; Online not available
Total ResponsibilityThe value-added that distinguishes SKF from other companies specialising in lubrication is our way of assuming the total responsibility right from the planning stage and carrying it through manufacturing, installation, training and service in the interests of trouble-free operation.
The SKF lubrication system brings significant benefits
• Increased productivity• Lower maintenance costs• Less bearing failures• Increased safety at work• Less problems in production
and maintenance.
7
Types and dosage ranges of grease dosing modules
Dosing Dosage range Materialmodule Grams/cycle Mild steel Stainless steel AISI-316
SGA-011 0,30–1,45 X XSGA-012 0,15–0,70 X X
SGA-11 0,50–2,55 X XSGA-12 0,25–1,25 X X
SGA-21 1,50–8,75 X XSGA-22 0,70–4,35 X X
SG-31 8,50–56,00 X XSG-32 4,30–28,00 X X
SG-41 19,00–92,00 XSG-42 9,65–46,00 X
SG-51 86,00–177,00 XSG-52 43–88,00 X
Main properties of control centres
Designation Application Lubrication Pressurisation Max. number Number of Online SMS cycle time of pumping lubrication stations channels
ST-105 two-channel 1 min to 1 s to 2 1–2 X X industrial 999 h 999 min systems
ST-1340 multichannel 1 min to 1 s to 4 1–4 X X industrial 999 h 59 min 9 999 sec systems
ST-1440 multichannel 1 min to 1 s to 14 1–14 X X industrial 999 h 59 min 9 999 sec systems
® SKF is a registered trademark of the SKF Group.
© SKF Group 2007The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or conse-quential arising out of the use of the information contained herein.
Publication 6414 EN
Printed in Sweden.
Please contact:
Oy SKF Ab
Muurame, Finland
skf-lube@skf.com
skf.com
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