Optimum Optimill MT 50 User manual

Operating manual
Milling-machine
Version 1.2.8
3336005

Version 1.2.8 - 2020-08-032 Translation of original instruction
MT50
EN
MT50_GBIVZ.fm
Table of contents
1 Safety
1.1 Rating plate.................................................................................................................................................... 6
1.2 Safety instructions (warning notes)................................................................................................................ 7
1.2.1 Classification of hazards.................................................................................................................. 8
1.2.2 Other pictograms.............................................................................................................................. 8
1.3 Intended use.................................................................................................................................................. 8
1.4 Reasonably foreseeable misuses.................................................................................................................. 9
1.4.1 Avoiding misuses............................................................................................................................. 9
1.5 Possible dangers caused by the milling-machine........................................................................................ 10
1.6 Qualification of personnel............................................................................................................................ 11
1.6.1 Target group................................................................................................................................... 11
1.6.2 Authorized personnel..................................................................................................................... 11
1.6.3 Obligations of the operating company............................................................................................ 12
1.6.4 Obligations of the operator............................................................................................................. 12
1.6.5 Additional requirements regarding the qualification ....................................................................... 12
1.7 Operator positions ....................................................................................................................................... 12
1.8 Safety measures during operation............................................................................................................... 12
1.9 Safety devices ............................................................................................................................................. 13
1.9.1 Lockable main switch..................................................................................................................... 14
1.9.2 Emergency-stop push button......................................................................................................... 14
1.9.3 Milling table.................................................................................................................................... 14
1.10 Safety check................................................................................................................................................ 15
1.11 Personnel protective equipment.................................................................................................................. 16
1.12 Safety during operation................................................................................................................................ 16
1.13 Safety during maintenance.......................................................................................................................... 16
1.13.1 Switching-off and securing the milling-machine............................................................................. 17
1.13.2 Using lifting equipment................................................................................................................... 17
1.13.3 Mechanical maintenance work....................................................................................................... 17
1.14 Accident report............................................................................................................................................. 17
1.15 Electrical system.......................................................................................................................................... 18
1.16 Inspection deadlines.................................................................................................................................... 18
2 Technical data
2.1 Electrical connection.................................................................................................................................... 19
2.2 Dimensions.................................................................................................................................................. 19
2.3 Adjustment travels/ Slewing ranges/ Distances........................................................................................... 19
2.4 Speeds / feeds............................................................................................................................................. 20
2.5 Drilling capacity............................................................................................................................................ 20
2.6 Coolant lubricant system ............................................................................................................................. 20
2.7 Operating material....................................................................................................................................... 20
2.8 Environmental conditions............................................................................................................................. 20
2.9 Emissions .................................................................................................................................................... 21
2.10 Installation plan............................................................................................................................................ 22
3 Delivery, interdepartmental transport, assembly and commissioning
3.1 Notes on transport, installation, commissioning .......................................................................................... 23
3.1.1 General risks during internal transport........................................................................................... 23
4 Assembly
4.1 Unpacking the machine............................................................................................................................... 24
4.2 Scope of delivery......................................................................................................................................... 24
4.3 Installation and assembly ............................................................................................................................ 24
4.3.1 Requirements to the installation site.............................................................................................. 24
4.3.2 Load attachment points.................................................................................................................. 25
4.3.3 Installation...................................................................................................................................... 26
4.3.4 Cleaning and lubricating................................................................................................................. 26
4.3.5 Assembly of the chip tray............................................................................................................... 26
4.3.6 Functional test................................................................................................................................ 27
4.3.7 Check the filling level of the gear oil............................................................................................... 27

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4.3.8 Refill coolant lubricant.....................................................................................................................27
4.4 Electrical connection ....................................................................................................................................27
4.5 First commissioning......................................................................................................................................27
4.5.1 Warming up the machine................................................................................................................28
5Operation
5.1 Safety...........................................................................................................................................................29
5.2 Control and indicating elements...................................................................................................................29
5.2.1 Control panel ..................................................................................................................................30
5.2.2 Switching elements.........................................................................................................................30
5.3 Switching on the milling-machine.................................................................................................................31
5.4 Switching off the milling-machine.................................................................................................................31
5.5 Inserting a tool..............................................................................................................................................31
5.6 Speed variation vertical-/ horizontal milling..................................................................................................32
5.6.1 Horizontal milling ............................................................................................................................32
5.6.2 Speed table horizontal milling.........................................................................................................33
5.6.3 Vertical milling.................................................................................................................................33
5.6.4 Speed table vertical milling.............................................................................................................34
5.7 Standard values for cutting speeds..............................................................................................................34
5.8 Manual spindle sleeve feed..........................................................................................................................35
5.8.1 Rough adjustment...........................................................................................................................35
5.8.2 Fine adjustment..............................................................................................................................36
5.9 Swivelling the milling head...........................................................................................................................36
5.9.1 Set milling head to the zero position...............................................................................................37
5.10 Raising / lowering the cross table.................................................................................................................37
5.11 Moving the spindle head-holder forward or back .........................................................................................38
5.12 Moving the cross table left or right (X-axis)..................................................................................................38
5.12.1 Manual movement on the X axis ....................................................................................................38
5.12.2 Switch on / off the automatic table feed (X axis).............................................................................39
5.12.3 Switch to the rapid mode................................................................................................................40
5.12.4 Switching the feed ..........................................................................................................................41
5.13 Moving the cross table forward / back (Y axis).............................................................................................42
5.14 Turning the spindle head-holder...................................................................................................................43
5.15 Conversion to horizontal milling ...................................................................................................................43
5.16 Cooling.........................................................................................................................................................45
6 Maintenance
6.1 Safety...........................................................................................................................................................47
6.1.1 Measures before repair works........................................................................................................47
6.1.2 Notes for repair...............................................................................................................................47
6.1.3 Measures before switching on again and after repair measures....................................................47
6.2 Cleaning.......................................................................................................................................................47
6.3 Inspection and maintenance ........................................................................................................................48
6.4 Cooling lubricants.........................................................................................................................................53
6.5 Repair...........................................................................................................................................................53
6.6 Cooling lubricants and tanks........................................................................................................................54
6.6.1 Inspection plan for water-mixed cooling lubricants.........................................................................55
7 Ersatzteile - Spare parts
7.1 Ersatzteilbestellung - Ordering spare parts..................................................................................................56
7.2 Hotline Ersatzteile - Spare parts Hotline ......................................................................................................56
7.3 Service Hotline.............................................................................................................................................56
7.4 Elektrische Ersatzteile - Electrical spare parts .............................................................................................56
7.5 Schaltplan - Wiring diagram.........................................................................................................................56
7.6 Säule und Fuß - Column and Base..............................................................................................................57
7.7 Frästisch - Milling table.................................................................................................................................60
7.8 Schaltgetriebe Vertikalfräsen - Transmission gear vertical milling...............................................................63
7.9 Riementrieb Horizontalfräsen - Belt drive horizontal milling.........................................................................66
7.10 Universal Schwenkkopf - Universal swiveling head .....................................................................................69
7.11 Vorschubgetriebe X Achse - X axis feed gear..............................................................................................72
7.12 Schaltplan - Wiring diagram 1-2...................................................................................................................76

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7.13 Schaltplan - wiring diagram 2-2................................................................................................................... 77
8 Malfunctions
9 Appendix
9.1 Copyright ..................................................................................................................................................... 84
9.2 Terminology/Glossary.................................................................................................................................. 84
9.3 Liability claims for defects / warranty........................................................................................................... 84
9.4 Change information operating manual......................................................................................................... 85
9.5 Storage........................................................................................................................................................ 86
9.6 Product follow-up......................................................................................................................................... 86
9.7 Note regarding disposal / options to reuse: ................................................................................................. 87
9.7.1 Decommissioning........................................................................................................................... 87
9.7.2 Disposal of the packaging of new devices..................................................................................... 87
9.7.3 Disposing of the old device............................................................................................................ 87
9.7.4 Disposal of electrical and electronic components .......................................................................... 87
9.7.5 Disposal of lubricants and coolants................................................................................................ 88
9.8 Disposal via municipal collection................................................................................................................. 88

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Preface
Dear customer,
Thank you very much for purchasing a product made by OPTIMUM.
OPTIMUM metal working machines offer a maximum of quality, technically optimum solutions and convince
by an outstanding price performance ratio. Continuous enhancements and product innovations guarantee
state-of-the-art products and safety at any time.
Before commissioning the machine please thoroughly read these operating instructions and get familiar with
the machine. Please also make sure that all persons operating the machine have read and understood the
operating instructions beforehand.
Keep these operating instructions in a safe place nearby the machine.
Information
The operating instructions include indications for safety-relevant and proper installation, operation and main-
tenance of the machine. The continuous observance of all notes included in this manual guarantee the safety
of persons and of the machine.
The manual determines the intended use of the machine and includes all necessary information for its eco-
nomic operation as well as its long service life.
In the paragraph "Maintenance" all maintenance works and functional tests are described which the operator
must perform in regular intervals.
The illustration and information included in the present manual can possibly deviate from the current state of
construction of your machine. Being the manufacturer we are continuously seeking for improvements and
renewal of the products. Therefore, changes might be performed without prior notice. The illustrations of the
machine may be different from the illustrations in these instructions with regard to a few details. However,
this does not have any influence on the operability of the machine.
Therefore, no claims may be derived from the indications and descriptions. Changes and errors are reserved!
Your suggestion with regard to these operating instructions are an important contribution to optimising our
work which we offer to our customers. For any questions or suggestions for improvement, please do not hesi-
tate to contact our service department.
If you have any further questions after reading these operating instructions and you are not able to
solve your problem with a help of these operating instructions, please contact your specialised
dealer or directly the company OPTIMUM.
Optimum Maschinen Germany GmbH
Dr.- Robert - Pfleger - Str. 26
D-96103 Hallstadt
Mail: [e-mail]
Internet: www.optimum-maschinen.com

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1 Safety
Glossary of symbols
This part of the operating instructions
explains the meaning and use of the warning notices included in these operating instruc-
tions,
defines the intended use of the milling-machine.
points out the dangers that might arise for you or others if these instructions are not
observed,
informs you about how to avoid dangers.
In addition to these operation instructions, please observe
the applicable laws and regulations,
the legal regulations for accident prevention,
the prohibition, warning and mandatory signs as well as the warning labels on the milling-
machine.
When installing, operating, maintaining and repairing the milling-machine it is necessary to
observe the European standards.
With regard to relevant national legislation which has not yet been adjusted to the European
standards, the applicable national legislation needs to be observed.
If required it is necessary to take the corresponding measures to comply with the country-spe-
cific regulations before commissioning the milling-machine.
Always keep this documentation close to the milling-machine.
1.1 Rating plate
gives further advice
calls on you to act
enumerations
Master Labels
Optimum Maschinen
Germany GmbH
Dr.-Robert-Pfleger-Str. 26
D-96103 Hallstadt
333 6005
900 kg
1,1/2,2 kW
400 V ~50 Hz
MT 50
1750 U/min
20
NO.
SN
Year
DE
GB
ES
FR
IT
CZ
DK
FI
GR
HU
NL
PL
PT
RO
SL
TR
Fräsmaschine
Milling machine
Fresadora
Fraiseuse
Fresatrice
Univerzální frézka
Freesmachine
Porajyrsin
Φρεζοδραπανο
Marógép
Freesmachine
Frezarka
Steberni vrtalni stroj
Freze Tezgahı
Engenhos de fresar
Maşină de găurit şi frezat
1,5kW
400 V ~50 Hz
1350 U/min

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INFORMATION
If you are unable to solve a problem using these operating instructions, please contact us for
advice:
Optimum Maschinen Germany GmbH
Dr. Robert-Pfleger-Str. 26
D- 96103 Hallstadt
Email: [e-mail]
1.2 Safety instructions (warning notes)
Warning danger of slipping! Warning risk of stumbling! Warning hot surface! Warning biological hazard!
Warning of automatic start-
up! Warning tilting danger! Warning of suspended loads! Caution, danger of explosive substances!
Activation forbidden! Read the operating
instructions before
commissioning!
Disconnect the mains plug!
Use protective glasses! Use protective gloves! Use protective boots! Use protective suit!
Use ear protection! Only switch in standstill! Protect the environment! Contact address

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1.2.1 Classification of hazards
We classify the safety warnings into various levels. The table below gives an overview of the
classification of symbols (ideogram) and the warning signs for each specific danger and its
(possible) consequences.
1.2.2 Other pictograms
1.3 Intended use
WARNING!
In the event of improper use, the milling-machine
will endanger personnel,
the milling-machine and other material property of the operating company will be
endangered,
the correct function of the milling-machine may be affected.
The milling-machine is designed and manufactured to be used in a non-explosive environment.
The milling-machine is designed and manufactured to be used for milling and drilling cold met-
als or other non-flammable materials or materials that do not constitute a health hazard by
using commercial milling and drilling tools.
The milling-machine must only be installed and operated in a dry and well-ventilated place.
The table housing of the cross table included in the scope of delivery can be used as chip and
spray guard. If necessary, the chip and splash guard on the milling table can be removed, if this
is not required for the operation.
Ideogram Warning alert Definition / consequence
DANGER! Threatening danger that will cause serious injury or death to people.
WARNING! A danger that might cause severe injury to the personnel or can lead to
death.
CAUTION! Danger or unsafe procedure that might cause injury to people or damage to
property.
ATTENTION!
Situation that could cause damage to the milling machine and products and
other types of damage.
No risk of injury to people.
INFORMATION
Application tips and other important or useful information and notes.
No dangerous or harmful consequences for people or objects.
In case of specific dangers, we replace the pictogram by
or
general danger by a warning of injury of hands, hazardous
electrical voltage, rotating parts.

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If the milling-machine is used in any way other than described above, modified without the
approval of the company Optimum Maschinen Germany GmbH then the milling-machine is
being used improperly. We will not be held liable for any damages resulting from any operation
which is not in accordance with the intended use.
We expressly point out that the guarantee or CE conformity will expire due to any constructive
technical or procedural changes which had not been performed by the company Optimum
Maschinen Germany GmbH.
It is also part of intended use that you
the maximum values for the milling-machine are complied with,
the operating manual is observed,
the inspection and maintenance instructions are observed.
 Technical data on page 19
WARNING!
Heaviest injuries through improper use.
It is forbidden to make any modifications or alternations to the operation values of the
milling-machine. They could endanger the personnel and cause damage to the milling-
machine.
1.4 Reasonably foreseeable misuses
Any other use as the one determined under the "Intended use" or any use
beyond the described use shall be deemed as not in conformity and is forbidden.
Any other use has to be discussed with the manufacturer.
It is only allowed to process metal, cold and non-inflammable materials with the milling-
machine.
In order to avoid misuses it is necessary to read and understand the operating instructions
before the first commissioning.
The operators must be qualified.
1.4.1 Avoiding misuses
Use of suitable cutting tools.
Adapting the speed adjustment and feed to the material and workpiece.
Clamp workpieces firmly and vibration-free.
ATTENTION!
The workpiece is always to be fixed by a machine vice, jaw chuck or by another
appropriate clamping tool such as for the clamping claws.
WARNING!
Risk of injury caused by workpieces flying off.
Clamp the workpiece in the machine vice. Make sure that the workpiece is firmly clamped in
the machine vice resp. that the machine vice is firmly clamped on the machine table.
Use cooling and lubricating agents to increase the durability of the tool and to improve the
surface quality.
Clamp the cutting tools and workpieces on clean clamping surfaces.
Sufficiently lubricate the machine.
Correctly adjust the bearing clearance and the guidings.
It is recommended:
Insert the drill in a way that it is exactly positioned between the three clamping jaws of the
quick action chuck.

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Clamp and mills by means of the collet chuck and the corresponding collets.
Clamp end face mills by means of shell end mill arbors.
When drilling make sure that
the suitable speed is set depending on the diameter of the drill,
the pressure must only be such that the drill can cut without load
in case of too strong pressure the drill will get worn early or even might break resp. get
jammed in the hole. If the drill gets jammed immediately stop the main motor by pressing
the emergency stop button,
for hard materials, e.g. steel, use commercial cooling / lubricating agents,
generally always drive the turning spindle out of the workpiece.
ATTENTION!
Do not use the quick action drill chuck for milling tools. Never clamp a milling cutter into
the quick action drill chuck. Use a collet chuck and the corresponding collets for the end
mill.
When milling make sure that
the corresponding cutting speed is selected,
for workpieces with normal strength values, e.g. steel 18-22 m/min,
for workpieces with high strength values 10-14 m/min,
the pressure is selected in a way that the cutting speed remains constant,
for hard materials commercial cooling / lubricating agents are used.
1.5 Possible dangers caused by the milling-machine
The milling-machine was built using the latest technological advances.
Nonetheless there remains a residual risk, since the milling-machine operates with
at high speeds,
with rotating parts and tools,
with electrical voltages and currents.
We have used construction resources and safety techniques to minimize the health risk to per-
sonnel resulting from these hazards.
If the milling-machine is used and maintained by the personnel who are not duly qualified,
there may be a risk resulting from incorrect or unsuitable maintenance of the milling-machine.
INFORMATION
Everyone involved in the assembly, commissioning, operation and maintenance must
be duly qualified,
strictly follow these operating instructions.
Always disconnect the milling-machine from the electrical power supply when performing clean-
ing or maintenance works.
WARNING !
The milling-machine may only be used with functional safety devices.
Disconnect the milling-machine immediately, whenever you detect a failure in the safety
devices or when they are not fitted!
All additional devices installed by the operator have to be equipped with the prescribed
safety devices.
This is your responsibility being the operating company!
 Safety devices on page 13

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1.6 Qualification of personnel
1.6.1 Target group
This manual is addressed to
• the operating companies,
• the operators,
• the personnel for maintenance works.
Therefore, the warning notes refer to both, operation and maintenance personnel of the milling-
machine.
Determine clearly and explicitly who will be responsible for the different activities on the
machine (operation, maintenance and repair).
Unclear responsibilities constitute a safety risk!
Always lock the main switch after switching off the milling-machine. This will prevent it from
being used by unauthorized personnel.
INFORMATION
Unclear responsibilities constitute a safety risk!
The qualifications of the personnel for the different tasks are mentioned below:
Operator
The operator is instructed by the operating company about the assigned tasks and possible
risks in case of improper behaviour. Any tasks which need to be performed beyond the opera-
tion in the standard mode must only be performed by the operator if it is indicated in these
instructions and if the operating company expressively commissioned the operator.
Electrical specialist
Due to his professional training, knowledge and experience as well as his knowledge of respec-
tive standards and regulations the electrical specialist is able to perform works on the electrical
system and to recognise and avoid any possible dangers himself.
The electrical specialist is specially trained for the working environment in which he is working
and knows the relevant standards and regulations.
Qualified personnel
Due to their professional training, knowledge and experience as well as their knowledge of rele-
vant regulations the qualified personnel is able to perform the assigned tasks and to recognise
and avoid any possible dangers themselves.
Instructed person
Instructed personnel were instructed by the operating company about the assigned tasks and
any possible risks in case of improper behaviour.
1.6.2 Authorized personnel
WARNING!
Inappropriate operation and maintenance of the milling-machine constitutes a danger for
the personnel, objects and the environment.
Only authorized personnel may operate the milling-machine !
Persons authorized to operate and maintain should be trained technical personnel and
instructed by the ones who are working for the operating company and for the manufacturer.

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1.6.3 Obligations of the operating company
The operator must instruct the staff at least once per year regarding
all safety standards that apply to the milling-machine,
the operation,
accredited technical guidelines.
The operator must also
check the knowledge of the staff,
document the trainings/instructions,
require personnel to confirm participation in training/instructions by means of a signature,
check whether the personnel is working safety- and risk-conscious and observe the operat-
ing instructions.
1.6.4 Obligations of the operator
The operator must
have read and understood the operating manual,
be familiar with all safety devices and regulations,
be able to operate the milling.
1.6.5 Additional requirements regarding the qualification
For work on electrical components or equipment, there are additional requirements:
Must only be performed by an electrical specialist or under the direction and supervision of
an electrical specialist.
Before carrying out work on electrical components or operating materials, the following meas-
ures must be taken, in the order given.
Disconnect all poles.
Secure against switching on.
Check if the machine is zero potential.
1.7 Operator positions
The operator's position is at the front or on the right front of the milling-machine.
1.8 Safety measures during operation
CAUTION!
Risk due to inhaling of health hazardous dusts and mist.
Dependent on the material which need to be processed and the used auxiliaries dusts
and mist may be caused which might impair you health.
Make sure that the generated health hazardous dusts and mist are safely sucked off at
the point of origin and is dissipated or filtered from the working area. To do so, use a
suitable extraction unit.
CAUTION!
Risk of fire and explosion by using flammable materials or cooling lubricants.
Before processing inflammable materials (e.g. aluminium, magnesium) or using inflam-
mable auxiliary materials (e.g. spirit) it is necessary to take additional preventive meas-
ures in order to safely avoid health risks.

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1.9 Safety devices
Use the milling-machine only with properly functioning safety devices.
Stop the milling-machine immediately if there is a failure on the safety device or if it is not func-
tioning for any reason.
It is your responsibility!
If a safety device has been activated or has failed, the milling-machine must only be used if you
have removed the cause of the failure,
have verified that there is no danger resulting for the personnel or objects.
WARNING!
If you bypass, remove or deactivate a safety device in any other way, you are endanger-
ing yourself and other personnel working with the milling-machine. The possible conse-
quences are
• injuries due to components or parts of components flying off at high speed,
• contact with rotating parts,
• fatal electrocution,
• pulling-in of clothes.
The milling machine includes the following safety devices:
a lockable main switch,
an emergency-stop push button,
a separating protective device on the vertical spindle,
a milling table with T-slots to fix the workpiece or the clamping device.
a removable chip and splash guard on the milling table.
WARNING!
The separating protective equipment which is made available and delivered together
with the machine is designed to reduce the risk of workpieces or fractions of them which
being expelled, but not to remove them completely. Always work carefully and observe
the limit values of your chipping process.
INFORMATION
The table housing of the cross table included in the scope of delivery can be used as
chip and splash guard. When using the horizontal mode, the chip and splash guard must
be mounted.

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1.9.1 Lockable main switch
WARNING!
Dangerous voltage even if the main switch is switched-off.
In the areas marked by the ideogram in the margin, there might be voltage, even if the
main switch is switched off.
In the position "0FF" the lockable main
switch can be secured against accidental
or non-authorized switching-on by means
of a padlock.
When the main switch is switched-off, the
current supply is interrupted.
Img.1-1: Main switch
1.9.2 Emergency-stop push button
Turn the knob of the push button to the
right in order to be able to restart the
machine after having pressed the push
button.
Then switch off the main switch and switch
it on again.
Img.1-2: emergency-stop push button
1.9.3 Milling table
Seats for T-slots are attached to the milling table.
WARNING!
Risk of injury due to parts flying off at high speed. Securely fix the workpiece on the
milling table.
Main switch
EMERGENCY-
STOP
push button

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1.10 Safety check
Check the milling-machine at least once per shift. Inform the person responsible immediately of
any damage, defect or change in operating function.
Check all safety devices
at the beginning of each shift (with the machine stopped),
once a week (with the machine in operation),
after every maintenance and repair work.
Check that prohibition, warning and information signs and the labels on the milling-machine
are legible (clean them, if necessary),
are complete.
INFORMATION
Use the following table in order to organize the checks.
General check
Equipment Check OK
Protective covers Mounted, firmly bolted and not damaged
Signs,
Markings Installed and legible
Date: checked by (signature):
Functional check
Equipment Check OK
Spindle protection The drive can only be switched on when the spindle protection is
in the operating position.
emergency-stop switch When the emergency-stop button is activated, the milling-machine
should switch off. Make sure that it is only possible to restart the
machine if the EMERGENCY STOP push button is unlocked.
Drives The spindle drives for horizontal milling and vertical milling can not run
simultaneously.
Date: checked by (signature):

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1.11 Personnel protective equipment
For some works you need personnel protective equipment as protective equipment.
Wear a safety helmet with facial protection when performing works where your face and eyes
are exposed to hazards.
Use protective gloves when handling pieces with sharp edges.
Use safety shoes when you assemble, disassemble or transport heavy components.
Use ear protection if the noise level (emission) in the workplace exceeds 80 dB (A).
Before starting work make sure that the prescribed personnel protective equipment is available
at the working place.
CAUTION!
Dirty or contaminated personnel protective equipment can cause diseases.
Clean it each time after use and once a week.
1.12 Safety during operation
We specially point out the specific dangers when working with and on the milling-machine.
WARNING!
Before activating the milling-machine assure yourself that this will neither endanger
other personnel nor cause damage to equipment.
Avoid any unsafe working practices:
Make sure that nobody is endangered by your work.
The instructions mentioned in these operating instructions have to be strictly observed dur-
ing assembly, operation, maintenance and repair.
Switch off the milling machine machine before measuring the workpiece.
Do not work on the milling-machine, if your concentration is reduced, for example, because
you are taking medication.
Observe the accident prevention regulations issued by your Employers Liability Insurance
Association or other competent supervisory authority, responsible for your company.
Inform the supervisor about all endangerments or errors.
Stay on the milling-machine until the movements are completely stopped.
Use the prescribed personnel protective equipment. Make sure to wear a well-fitting work
suit and, if necessary, a hairnet.
Switch off the milling machine on the main switch before changing the tool.
Use appropriate auxiliary materials to remove drilling and milling chips.
Make sure that nobody is endangered by your work.
Safely and firmly clamp the workpiece before switching on the milling machine.
Wear when working on the machine no jewelry, watches or rings.
1.13 Safety during maintenance
Inform the operators in good time about any maintenance and repair works.
Report all safety relevant changes and performance details of the milling-machine. Document
all changes, have the operating instructions updated accordingly and train machine operators.

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1.13.1 Switching-off and securing the milling-machine
Switch off the milling-machine by turning off the main switch before starting any maintenance
andrepair work.
Use a padlock to prevent the switch from being turned on without authorization and keep the
key in a safe place.
All machine parts as well as all dangerous tensions are switched off.
Excepted are only the positions which are marked with the adjoining pictogram. These positions
may be live even if the main switch is switched off.
Place a warning sign on the milling-machine.
WARNING!
Live parts and moves of machine parts can injure you or others dangerously! Proceed
with extreme care if you cannot switch off the milling-machine by turning off the main
switch due to required works (e.g. functional control).
1.13.2 Using lifting equipment
WARNING!
The use of unstable lifting and load suspension gear that might break under load can
cause severe injuries or even death.
Check that the lifting equipment and load-suspension gears are of sufficient load
capacity and are in perfect condition. Observe the accident prevention regulations
issued by your Employers Liability Insurance Association or other competent
supervisory authority, responsible for your company. Fasten the loads properly. Never
walk under suspended loads!
1.13.3 Mechanical maintenance work
Remove or install protection safety devices before starting any maintenance work and re-install
them once the work has been completed.This includes:
Covers,
Safety indications and warning signs,
earth (ground) connections.
If you remove protective or safety devices, re-fit them immediately after the completing the
work.
Check if they are working properly!
1.14 Accident report
Inform your superiors and Optimum Maschinen Germany GmbH immediately in the event of
accidents, possible sources of danger and any actions which almost led to an accident (near
misses).
There are many possible causes for "near misses".
The sooner they are notified, the faster the causes can be eliminated.
INFORMATION
We point out the specific dangers when performing works with and on the milling-machine
when describing such works.

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1.15 Electrical system
Have the machine and/or the electric equipment checked regularly. Immediately eliminate all
defects such as loose connections, defective wires, etc.
A second person must be present during work on live components to disconnect the power in
the event of an emergency. Disconnect the Drehmaschine immediately if there is a malfunction
in the power supply!
Comply with the required inspection intervals in accordance with the factory safety directive,
operating equipment inspection DGUV, formerly BVG.
The operating company responsible for the machine must ensure that the electrical systems
and operating equipment are inspected with regards to their proper condition, namely,
by a qualified electrician or under the supervision and direction of a qualified electrician,
prior to initial commissioning and after modifications or repairs, prior to recommissioning
and at certain intervals.
The deadlines must be set so that arising, foreseeable defects can be detected in a timely man-
ner.
The relevant electro-technical rules must be followed during the inspection.
The inspection prior to initial commissioning is not required if the operator receives confirma-
tion from the manufacturer or installer that the electrical systems and operating equipment com-
ply with the accident prevention regulations, see conformity declaration.
Permanently installed electrical systems and operating equipment are considered constantly
monitored if they are continually serviced by qualified electricians and inspected by means of
measurements in the scope of operation (e.g. monitoring the insulation resistance).
1.16 Inspection deadlines
Define and document the inspection deadlines for the machine in accordance with § 3 of the
Factory Safety Act and perform an operational risk analysis in accordance with § 6 of the Work
Safety Act. Also use the inspection intervals in the maintenance section as reference values.

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2 Technical data
The following information are the dimensions and indications of weight and the manufacturer‘s
approved machine data.
2.1 Electrical connection
Total connected load 4.5 KW / 400V / 50Hz
Motor power horizontal spindle 1.5 kW
Motor power vertical spindle 1.1 / 2.2 kW
2.2 Dimensions
Spindle seat (horizontal milling, vertical milling) Taper SK 40
Cross table, model up to serial number
J201310355 800mm x 240mm
Cross table, model up to serial number
J201310356 1000mm x 240mm
Height
 Installation plan on page 22Width
Depth
Total weight 900 kg
Weight including packaging 1050 kg
Dimensions of packaging L x W x H 1290 x 1220 x 2100mm
Max. load of cross table 160 kg
T-slot size / number 14mm / 4
2.3 Adjustment travels/ Slewing ranges/ Distances
Spindle stroke 120 mm
Traverse path X direction cross table 580 mm
Scaling travel X direction cross table 0.002mm
Traverse path Y direction cross table 200 mm
Scaling travel Y direction cross table 0.002mm
Traverse path Z direction cross table 340 mm
Scaling travel Z direction cross table 0.002mm
Throat vertical spindle 240 - 650 mm
Throat horizontal spindle 0 - 185 mm
Spindle stroke vertical spindle 0 - 120 mm

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2.4 Speeds / feeds
Spindle speed (vertical milling) ~ 50Hz
connection 115 rpm - 1750 rpm
Spindle speed (vertical milling) ~ 60Hz
connection 140 rpm - 2100 rpm
Gear stages (vertical milling) 8
Spindle speed (horizontal milling) ~ 50Hz
connection 60 rpm - 1350 rpm
Spindle speed (horizontal milling) ~ 60Hz
connection 70 rpm - 1600 rpm
Gear stages (horizontal milling) 9
Table feed X axis ~ 50Hz connection 24 - 720 mm/min
Table feed X axis ~ 60Hz connection 29 - 864 mm/min
Table feed drive 0.37 kW
2.5 Drilling capacity
Drilling capacity in steel (S235JR) 30 mm
Continuous drilling capacity in steel (S235JR) 25 mm
2.6 Coolant lubricant system
Power of the coolant/ lubricant pumps 40 W
Connection pump 400V ~ 50Hz
Tank capacity 12 litres
2.7 Operating material  Lubricant on page 80
Gear oil
Mobilgear 627 (Viscosity class 100)
or
Mobilgear 629 (Viscosity class 150)
Grease Commercial bearing grease
Coolant lubricant system Water mixable, nebular arm, high flash point, nitrite
content of the emulsion is less than 20 mg/l
2.8 Environmental conditions
Temperature 5-35 °C
Humidity 25-28 %