Optimum OPTIMILL MH 28V User manual

OPTIMUM
MASCHINEN - GERMANY
GB
Operating instructions
Version 1.0.1

OPTIMUM
MASCHINEN - GERMANY
 2012
Version 1.0.1 dated 30 / 08 / 2012 Page 2 Original operating instructions MH28V GB
Table of Contents
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
maintenance 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 opera-
tor 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 drilling-milling 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 drilling-milling machine.
Therefore, no claims may be derived from the indications and descriptions. Changes and errors are reser-
ved!
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
hesitate 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
Phone (+49)0900 - 1968220 (Hotline number with cost: at the time when the manual was printed 0.49 Euro/min
from a fixed location in Germany)
Fax (+49)0951 / 96555 -888
Mail: [e-mail]
Internet: www.optimum-maschinen.de
1 Safety
1.1 Safety warnings (warning notes) ..............................................................................................................6
1.1.1 Classification of hazards ...............................................................................................................6
1.1.2 Further pictograms........................................................................................................................7
1.2 Proper use................................................................................................................................................7
1.3 Reasonably foreseeable misuse...............................................................................................................8
1.3.1 Avoiding misuse............................................................................................................................8
1.4 Possible dangers caused by the drilling-milling machine. ........................................................................9
1.5 Qualification of personnel.......................................................................................................................10
1.5.1 Target group................................................................................................................................10
1.6 User’s position........................................................................................................................................11
1.7 Safety measures during operation..........................................................................................................11
1.8 Safety devices ........................................................................................................................................11

OPTIMUM
MASCHINEN - GERMANY
 2012
Version 1.0.1 dated 30 / 08 / 2012 Page 3 Original operating instructions MH28V GB
1.8.1 EMERGENCY-STOP button.......................................................................................................12
1.8.2 Protective cover ..........................................................................................................................12
1.8.3 Separating protective equipment ................................................................................................12
1.9 Safety check...........................................................................................................................................13
1.10 Personnel protective equipment.............................................................................................................13
1.11 For your own safety during operation.....................................................................................................14
1.12 Disconnecting and securing the drilling-milling machine........................................................................14
1.13 Using lifting equipment...........................................................................................................................14
1.14 Signs on the drilling-milling machine ......................................................................................................15
1.15 Rescuing persons in dangerous situations after the CNC retrofitting.....................................................15
2 Technical data
2.1 Type plate...............................................................................................................................................16
2.2 Power connection...................................................................................................................................16
2.3 Drilling-milling capacity...........................................................................................................................16
2.4 Spindle holding fixture............................................................................................................................16
2.5 Drill-mill head..........................................................................................................................................16
2.6 Cross table .............................................................................................................................................16
2.7 Dimensions.............................................................................................................................................16
2.12 Emissions...............................................................................................................................................17
2.8 Work area...............................................................................................................................................17
2.9 Speeds ...................................................................................................................................................17
2.10 Environmental conditions .......................................................................................................................17
2.11 Operating material..................................................................................................................................17
3 Unpacking and connecting
3.1 Extent of supply......................................................................................................................................19
3.2 Transport................................................................................................................................................19
3.3 Storage...................................................................................................................................................20
3.4 Installation and assembly .......................................................................................................................21
3.4.1 Site requirements........................................................................................................................21
3.4.2 Load suspension point ................................................................................................................21
3.4.3 Installation...................................................................................................................................21
3.5 First use..................................................................................................................................................22
3.5.1 Power supply...............................................................................................................................22
3.5.2 Cleaning and lubricating..............................................................................................................22
3.5.3 Warming up the machine ............................................................................................................23
4Operation
4.1 Safety .....................................................................................................................................................24
4.2 Control and indicating elements.............................................................................................................24
4.2.1 Control panel...............................................................................................................................25
4.3 Switching on the drilling-milling machine................................................................................................26
4.4 Switching off the drilling-milling machine................................................................................................26
4.5 Inserting a tool........................................................................................................................................27
4.5.1 Installation...................................................................................................................................27
4.5.2 Disassembly................................................................................................................................27
4.5.3 Use of collet chucks ....................................................................................................................27
4.6 Clamping the workpieces .......................................................................................................................28
4.7 Changing the speed range.....................................................................................................................28
4.8 Selecting the speed................................................................................................................................29
4.8.1 Standards values for cutting speeds...........................................................................................29
4.8.2 Standard values for speeds with HSS – Eco – twist drilling........................................................30
4.9 Manual spindle sleeve feed with the fine feed........................................................................................31
4.10 Digital display for spindle sleeve travel...................................................................................................31
4.10.1 Technical data.............................................................................................................................31

OPTIMUM
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 2012
Version 1.0.1 dated 30 / 08 / 2012 Page 4 Original operating instructions MH28V GB
4.10.2 Design.........................................................................................................................................32
4.10.3 Malfunctions................................................................................................................................32
4.11 Manual spindle sleeve feed with the spindle sleeve lever......................................................................33
4.12 Swivelling the drill-mill head....................................................................................................................33
5 Maintenance
5.1 Safety......................................................................................................................................................34
5.1.1 Preparation..................................................................................................................................35
5.1.2 Restarting....................................................................................................................................35
5.2 Inspection and maintenance...................................................................................................................35
5.3 Repair.....................................................................................................................................................39
5.4 Setting instructions control......................................................................................................................40
6 Ersatzteile - Spare parts
6.1 Kreuztisch - Cross table..........................................................................................................................41
6.2 Säule 1 von 2 - Column 1 of 2................................................................................................................42
6.3 Säule 2 von 2 - Column 2 of 2................................................................................................................43
6.4 Fräskopf 1 von 2 - Milling head 1 of 2.....................................................................................................44
6.5 Fräskopf 2 von 2 - Milling head 2 of 2.....................................................................................................45
6.6 Bedienkonsole /Schutzeinrichtung - Operation panel/ protection device................................................46
6.7 Schaltplan - Wiring diagram....................................................................................................................47
6.7.1 Ersatzteilliste - Spare part list......................................................................................................48
7 Malfunctions
7.1 Malfunctions on the drilling-milling machine ...........................................................................................53
8 Appendix
8.1 Copyright ................................................................................................................................................54
8.2 Terminology/Glossary.............................................................................................................................54
8.3 Liability claims for defects / warranty......................................................................................................55
8.4 Note regarding disposal / options to reuse:............................................................................................55
8.4.1 Decommissioning........................................................................................................................56
8.4.2 Disposal of the packaging of new devices ..................................................................................56
8.4.3 Disposing of the old device .........................................................................................................56
8.4.4 Disposal of electrical and electronic components .......................................................................56
8.4.5 Disposal of lubricants and coolants.............................................................................................57
8.5 Disposal..................................................................................................................................................57
8.6 RoHS , 2002/95/CE................................................................................................................................57
8.7 Product follow-up....................................................................................................................................58
8.8 EC - Declaration of Conformity...............................................................................................................59

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 5 Original operating instructions MH28V GB
1 Safety
Glossary of symbols
This part of the operating manual
explains the meaning and use of the warning references contained in the operating man-
ual,
explains how to use the drilling-milling machine properly,
highlights the dangers that might arise for you and others if these instructions are not
obeyed,
informs you on how to prevent dangers.
In addition to this operating manual please observe
applicable laws and regulations,
legal regulations for accident prevention,
the prohibition, warning and mandatory signs as well as the warning notes on the drill-
ing-milling machine.
Always keep this documentation close to the drilling-milling machine.
INFORMATION
If you are unable to solve a problem using this manual, please contact us for advice:
Optimum Maschinen Germany GmbH
Dr. Robert-Pfleger-Str. 26
D- 96103 Hallstadt
Telefon: +49 (0) 900 - 19 68 220 (0,49 €/min.)
E-Mail: [e-mail]
gives additional indications
calls on you to act
enumerations

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 6 Original operating instructions MH28V GB
1.1 Safety warnings (warning notes)
1.1.1 Classification of hazards
We classify the safety warnings into various levels. The table below gives an overview of the
classification of symbols (pictograms) and warnings for the specific danger and its (possible)
consequences.
Pictogram Alarm expres-
sion Definition/Consequences
DANGER! Imminent danger that will cause serious injury or death to per-
sons.
WARNING! Risk: a danger that might cause serious injury or death to per-
sons.
CAUTION! Danger or unsafe procedure that might cause injury to persons
or damage to property.
ATTENTION!
Situation that could cause damage to the drilling-milling machine
and to the product and other types of damage.
No risk of injury to persons.
INFORMATION
Application tips and other important/helpful or useful information
and notes.
No dangerous or harmful consequences for persons or objects.
In the case of specific dangers, we replace the pictogram by
or
general danger with a warning
of injuries to hands, hazardous elec- trical voltage, rotating parts.

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 7 Original operating instructions MH28V GB
1.1.2 Further pictograms
1.2 Proper use
WARNING!
In the event of improper use, the drilling-milling machine
will endanger the staff,
will endanger the drilling-milling machine and other material property of the oper-
ator,
may affect the proper operation of the drilling-milling machine.
The drilling-milling machine is designed and manufactured to be used for milling and drilling
cold metals or other non-flammable materials that do not constitute a health hazard by using
commercial milling and drilling tools.
The drilling-milling machine must only be installed and operated in a dry and well-ventilated
place.
If the drilling-milling machine is used in any way other than described above, modified with-
out the authorisation of the company Optimum Maschinen Germany GmbH or operated with
different process data, then the drilling-milling machine is being used improperly.
We do not take any liability for damages caused by improper use.
We would like to stress that any modifications to the construction or technical or technologi-
cal modifications that have not been authorised by the company Optimum Maschinen Ger-
many GmbH will also render the guarantee null and void. It is also part of proper use that
the maximum values for the drilling-milling machine are complied with,
the operating manual is observed,
inspection and maintenance instructions are observed.
 “Technical data“ on page 16
Activation forbidden! Read the operating
manual before the
machine is first used!
Pull the mains plug! Use protective goggles!
Use protective gloves! Use protective boots! Wear a safety suit! Use ear protection!
Protect the environ-
ment! Contact address

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 8 Original operating instructions MH28V GB
WARNING!
Very serious injury due to improper use.
It is forbidden to make any modifications or alterations to the operating values of the
drilling-milling machine. These could endanger the staff and cause damage to the
drilling-milling machine.
INFORMATION
The drilling-milling machine MH28V is built according to the standard DIN EN 55011 class A.
WARNING!
The class A (machine tools) is not intended to be used in residential facilities, where
the power is supplied via a public low voltage supply system. In these areas it may
possibly be difficult to guarantee electromagnetic compatibility due to lead bound as
well as emitted interferences.
CAUTION!
If the table drilling machine is not used as intended or if the safety directives or the
operating instructions are ignored the liability of the manufacturer for any damages to
persons or objects resulting hereof is excluded and the claim under guarantee is
becoming null and void!
1.3 Reasonably foreseeable misuse
Any other use or any use beyond the use described under "Proper use" is regarded as
improper use and is forbidden.
If it is intended to use the device in any other way as described above, it is necessary to con-
sult the manufacturer.
It is only allowed to work metallic, cold and non-flammable material using the milling machine.
In order to avoid misuse, it is necessary to read and understand the operating instructions
before the first commissioning.
The operators must be qualified.
1.3.1 Avoiding misuse
Using suitable cutting tools.
Adapting speed settings and feed on the material and on the workpiece.
Clamp the workpiece firmly and vibration-free.
ATTTENTION!
The workpiece must always be fixed in a machine vice, jaw chucks or any other
suitable clamping tool such as e.g. clamping claws.
WARNING!
Injuries due to workpieces flying off at high speed
Clamp the workpiece in the machine vice. Make sure that the workpiece is firmly clamped in
the machine vice resp. the machine vice is firmly fixed on the machine table.
Use of cooling and lubricating agents in order to increase the durability of the tool and to
improve the surface quality.
Clamp the cutting tools and the workpieces on clean clamping surfaces.
Sufficiently lubricate the machine.
Correctly set the bearing clearance and guidance.

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 9 Original operating instructions MH28V GB
It is recommended to:
Use the drill in a way that it is exactly located between the three clamping jaws of the
quick action chuck.
Clamp the end mill by means of the collet chuck and the corresponding clamping collets.
Clamp the end face mill by means of the end mill arbor.
When drilling, please observe that
It is necessary to set the suitable speed depending on the diameter of the drill,
The press-on must only be as intense that the drill can cut on no-load,
If the press-on is too intense, it might result in early tool wear perhaps even tool fracture
resp. jamming in the drill hole. If the tool gets jammed, immediately stop the main drive
motor by actuating the emergency-stop button,
For hard materials, e.g. steel, it is necessary to use commercial cooling/lubricating
agents,
Generally always back out the tool from the workpiece while the shaft is turning.
ATTENTION!
Do not use the quick action chuck as milling tool. Do not clamp the milling tool in the
quick action chuck in no case. Use a collet chuck and the corresponding collets for
the end mill.
When milling, make sure that
The suitable cutting speed is selected,
For materials with normal mechanical strength, e.g. steel 18-22 m/min,
For materials with higher mechanical strength 10-14 m/min,
The press-on is selected in a way that the cutting speed remains constant,
commercial cooling/lubricating agents are used for hard materials.
1.4 Possible dangers caused by the drilling-milling machine.
The drilling-milling machine was built using the latest technological advances.
Nonetheless there remains a residual risk, since the drilling-milling machine operates with
high revolutions,
rotating parts and tools,
electrical voltage and currents.
We have used construction resources and safety techniques to minimise the health risk to
the staff resulting from these hazards.
If the drilling-milling machine is used and maintained by staff who are not duly qualified,
there may be a risk by the drilling-milling machine resulting from incorrect operation or
unsuitable maintenance.
INFORMATION
All persons involved in assembly, commissioning, operation and maintenance must
be duly qualified,
strictly follow this operating manual.
Disconnect the drilling-milling machine whenever cleaning or maintenance work is being car-
ried out.

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 10 Original operating instructions MH28V GB
WARNING!
The drilling-milling machine may only be used with the safety devices activated.
Disconnect the drilling-milling machine whenever you detect a failure in the safety
devices or when they are not fitted!
All additional installations carried out by the operator need to incorporate the
prescribed safety devices.
This will be your responsibility being the machine operator!
 “Safety devices“ on page 11
1.5 Qualification of personnel
1.5.1 Target group
This manual is addressed to
the operator,
the user,
the maintenance staff.
The warning notes therefore refer to both operation and maintenance of the drilling-milling
machine.
Always disconnect the drilling-milling machine plug from the mains. This will prevent it from
being used by unauthorised staff.
The qualifications of the staff 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 oper-
ation 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
respective 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.
Specialist staff
Due to his professional training, knowledge and experience as well as his knowledge of rele-
vant regulations the specialist staff is able to perform the assigned tasks and to recognise and
avoid any possible dangers himself.
Instructed persons
Instructed persons were instructed by the operating company about the assigned tasks and
any possible risks in case of improper behaviour.
INFORMATION
All persons involved in assembly, commissioning, operation and maintenance must
be duly qualified,
strictly follow this operating manual.
In the event of improper use
there may be a risk to the staff,

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 11 Original operating instructions MH28V GB
there may be a risk to the drilling-milling machine and other material property,
may affect proper operation of the drilling-milling machine.
1.6 User’s position
The user must stand in front of the drilling-milling machine.
1.7 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. Use an
appropriate suction unit.
CAUTION!
Risk of fire and explosion by using flammable materials or cooling lubricants.
Take additional preventive measures in order to safely avoid health hazards before
processing flammable materials (e.g. aluminum, magnesium) or before using
flammable additives (e.g. spirit).
1.8 Safety devices
Use the drilling-milling machine only with properly functioning safety devices.
Stop the drilling-milling machine immediately if there is a failure in the safety device or if it is
not functioning for any reason.
It is your responsibility!
If a safety device has been activated or has failed, the drilling-milling machine must only be
used when
the cause of the failure has been removed,
it has been verified that there is no danger resulting for the staff or objects.
WARNING!
If you bypass, remove or override a safety device in any other way, your are
endangering yourself and other persons working with the drilling-milling machine.
The possible consequences are
damage as a result of components or parts of components flying off at high
speed,
contact with rotating parts,
fatal electrocution.
The drilling-milling machine includes the following safety devices:
an EMERGENCY-STOP button,
a protective cover on the drill-mill head,
a separating protective equipment on the milling spindle.
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.

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 12 Original operating instructions MH28V GB
1.8.1 EMERGENCY-STOP button
The EMERGENCY-STOP button
switches the drilling-milling machine off.
 “Switching on the drilling-milling
machine“ on page 26
Fig.1-1: EMERGENCY-STOP button
ATTENTION!
The EMERGENCY-STOP button switches off the drilling-milling machine immediately.
Only press the EMERGENCY-STOP button in case of danger! If the button is actuated
in order to stop the drilling-milling machine generally you might damage tools or
workpieces.
After actuating the button, turn it to the right, in order to restart the machine.
1.8.2 Protective cover
The drill-mill head is fitted with a protec-
tive cover.
WARNING!
Remove the protective cover only
after the mains plug has been pulled
out of the socket.
Fig.1-2: Protective cover
1.8.3 Separating protective equipment
Adjust the protective equipment to the correct
height before you start working.
To do so, detach the clamping screw, adjust the
required height and retighten the clamping
screw.
A switch is integrated in the fixture of the spindle
protection which monitors that the cover is
closed.
INFORMATION
You cannot start the machine if the drill chuck
protection is not closed.
Fig.1-3: Separating protective equipment
EMERGENCY-STOP
Protective cover
Locking screw

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 13 Original operating instructions MH28V GB
1.9 Safety check
Check the drilling-milling machine regularly.
Check all safety devices
before starting work,
once a week (with permanent operation),
after every maintenance and repair operation.
1.10 Personnel protective equipment
For certain work peersonnel protective equipment is required.
Protect your face and eyes: During all work and specifically work during which your face and
eyes are exposed to hazards, a safety helmet with a face guard should be worn.
Use protective gloves when handling pieces with sharp edges.
Use safety shoes when you position, dismantle or transport heavy components.
Use ear protection if the noise level (immission) in the workplace exceeds 80 dB (A).
Before starting work, make sure that the prescribed individual protection gear is available at
the workplace.
CAUTION!
Dirty or contaminated personnel protective equipment can cause disease. Clean it
each time after it has been used and once a week.
General check
Equipment Check OK
Protective covers Fitted, firmly bolted and not damaged
Labels,
markings Installed and legible
Run test
Equipment Check OK
EMERGENCY-STOP button When the EMERGENCY-STOP button is activated, the drilling-milling
machine should switch off. A restart will not be possible until the EMER-
GENCY-STOP button has been unlocked and the ON switch has been
activated.
Separating protective equip-
ment around the drilling and
milling spindle
Only switch on the drilling-milling machine if the protective equipment is
closed.

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 14 Original operating instructions MH28V GB
1.11 For your own safety during operation
WARNING!
Before activating the drilling-milling machine, double-check that this will not endanger
other people or cause damage to equipment.
Avoid any unsafe working practises:
Make sure your work does not endanger anyone.
The instructions in this manual need to be observed during assembly, handling, mainte-
nance and repair.
Use protective goggles.
Switch off the drilling-milling machine before measuring the workpiece.
Do not work on the drilling-milling machine if your concentration is reduced, for example,
because you are taking medication.
Stay on the drilling-milling machine until the working spindle has come to a complete halt.
Use the prescribed protective equipment. Make sure to wear a well-fitting work suit, when
necessary, a hairnet.
Do not use protective gloves during drilling or milling work.
Unplug the shockproof plug from the mains, before changing the tool.
Use suitable devices for removing drilling and milling chips.
Make sure your work does not endanger anyone.
Clamp the workpiece tightly before activating the drilling-milling machine.
In the description of work with and on the drilling-milling machine we highlight the dangers
specific to that work.
1.12 Disconnecting and securing the drilling-milling machine
Pull out the mains plug before starting maintenance and repair work.
1.13 Using lifting equipment
WARNING!
Use of unstable lifting equipment and load suspension devices that break under load
can cause very serious injury or even death.
Check that the lifting equipment and load suspension devices are of sufficient load
capacity and in perfect condition.
Observe the rules for preventing accidents issued by your association for the
prevention of occupational accidents and safety in the workplace or other inspection
authorities.
Hold the loads properly.
Never walk under suspended loads!

OPTIMUM
MASCHINEN - GERMANY
 2012
Safety
Version 1.0.1 dated 30 / 08 / 2012 Page 15 Original operating instructions MH28V GB
1.14 Signs on the drilling-milling machine
Fig.1-4: MH28V
1.15 Rescuing persons in dangerous situations after the CNC retrofitting
If the machine was subject to a subsequent retrofitting with CNC controlled drives, the fol-
lowing additional dangerous situations such as squeezing and sticking of parts of the body
may result hereof.
If the machine had been switched off in a dangerous situation using the Emergency-Stop
function, it is no longer possible to actuate the axis by means of the electromotor in order to
rescue the squeezed person.
In this case it is necessary to release the machine manually.
This releasing of the X-axis and of the Y-axis is performed using an appropriate tool (e.g. a
flat wrench), which is inserted on the hexagon nut at the shaft end which is opposite to the
drive.
It is only possible to release the Z-axis using a separate handwheel which is inserted on the
free shaft end of the manual crank drive.
WARNING!
It is imperatively necessary that the tools are available to release the machine in case
of a dangerous situation.
Therefore, keep the wrench and the handwheel always in close proximity of the CNC
controlled machine.

OPTIMUM
MASCHINEN - GERMANY

2012
Technical data
Version 1.0.1 dated 30 / 08 / 2012 Page 16 Original operating instructions
MH28V GB
2 Technical data
2.1 Type plate
Fig.2-1: Type plate
The following information gives the dimensions and weight and is the manufacturer’s author-
ised machine data.
Drilling-
milling machine
Serial no.
Year of manufacture
Item no.
Power of motor
Electric supply
Spindle speed max.
Weight
2.2 Power connection
Wk1,1/zH05/V042enignE
2.3 Drilling-milling capacity
Drilling capacity [mm] Ømax. 28
Milling capacity of end-mill cutter [mm] Ømax. 28
Milling capacity of inserted tooth cutter [mm] Ømax. 70
2.4 Spindle holding fixture
21M/3KMerutxifgnidloheldnipS
mm07]mm[levarteveelS
2.5 Drill-mill head
°09-/+gnilleviwS
2segatsnoitcudeR
083]mm[levartsixa-Z
2.6 Cross table
037]mm[htgnelelbaT
012]mm[htdiwelbaT
044]mm[levartsixa-Y
091]mm[levartsixa-X
41]mm[ecnatsid/ezistols-T
2.7 Dimensions
0001]mm[thgieH
036]mm[htpeD
4

OPTIMUM
MASCHINEN - GERMANY
 2012
Technical data
Version 1.0.1 dated 30 / 08 / 2012 Page 17 Original operating instructions MH28V GB
2.12 Emissions
The emission of the drilling-milling machine is below 76 dB(A). If the drilling-milling machine
is installed in an area where various machines are in operation, the acoustic influence
(immission) on the operator of the drilling-milling machine may exceed 85 dB(A).
INFORMATION
This numeric value had been measured on a new machine under conventional operating
conditions. Depending on the age or wear of the machine, the noise behavior of the machine
might change.
Furthermore, the extent of the noise emission is also depending on manufacturing
influence factors, such as speed, material and clamping conditions.
INFORMATION
The mentioned numerical value is an emission level and not necessarily a safe
working level.
Unless the degree of noise emission and the degree of noise disturbance are depending on
one another it is not possible to use it in order to reliably determine if it is necessary to take
further preventive measures or not.
The following factors influence the actual degree of the noise disturbance of the
operator:
Characteristics of the working chamber, e.g. size or damping behavior,
Other noise sources, e.g. the number of machines,
Other processes proceeding nearby and the period during which the operator is exposed
to the noise.
Furthermore, the admissible pollution level may be different from one country to another due
to the national regulations.
Width [mm] 870
Total weight [kg] 205 to 220
2.8 Work area
Height [mm] 2000
Depth [mm] 2200
Width [mm] 1500
2.9 Speeds
Reduction stage slow [min-1]100-830
Reduction stage fast [min-1] 300 - 2500
2.10 Environmental conditions
Temperatur 5 - 35 °C
Luftfeuchtigkeit 25 - 80%
2.11 Operating material
Reduction stage
Blank steel parts Mobilgrease OGL 007 or,
Mobilux EP 004, or Mobil XHP
acid-free oil, e.g. weapon oil, motor oil

OPTIMUM
MASCHINEN - GERMANY
 2012
Technical data
Version 1.0.1 dated 30 / 08 / 2012 Page 18 Original operating instructions MH28V GB
This information regarding the noise emission should allow the operator of the machine to
perform a better evaluation of the endangerments and risks.
CAUTION!
The machine operator has to wear an appropriate ear protection depending on the
overall stress caused by noise and on the basic limit values.
We generally recommend using a sound and ear protection.

OPTIMUM
MASCHINEN - GERMANY
 2012
Unpacking and connecting
Version 1.0.1 dated 30 / 08 / 2012 Page 19 Original operating instructions MH28V GB
3 Unpacking and connecting
INFORMATION
The drilling-milling machine comes pre-assembled.
3.1 Extent of supply
When the drilling-milling machine is delivered, immediately check that the machine has not
been damaged during shipping and that all components are included. Also check that no
fastening screws have come loose.
Compare the parts supplied with the information on packing list.
3.2 Transport
WARNING!
Machine parts falling off forklift trucks or other transport vehicles could cause very
serious or even fatal injuries. Follow the instructions and information on the transport
case.
WARNING!
Use of unstable lifting equipment and load-suspension devices that break under load
can cause very serious injury or even death.
Check that the lifting and load-suspension gear has sufficient load capacity and that it
is in perfect condition. Observe the rules for preventing accidents issued by your
association for the prevention of occupational accidents and safety in the workplace
or other inspection authorities.
Hold the loads properly. Never walk under suspended loads!
Center of gravity
Attachment positions (marking the positions for the
attachment position gear)
Prescribed transport position (marking the top
side)
Means of transportation to be used
Weights

OPTIMUM
MASCHINEN - GERMANY
 2012
Unpacking and connecting
Version 1.0.1 dated 30 / 08 / 2012 Page 20 Original operating instructions MH28V GB
3.3 Storage
ATTENTION!
Improper storage may cause important parts to be damaged or destroyed.
Store packed or unpacked parts only under the following ambient conditions.
Please follow the instructions and indications on the transportation box.
Consult Optimum Maschinen Germany GmbH if the drilling-milling machine and accessories
have to be stored for a period of over three months or under different external conditions than
those given here  “Information“ on page 5.
Fragile goods (goods require careful handling)
Protect against humidity and humid environments
 “Environmental conditions“ on page 17.
Prescribed position of the packaging box (marking the
top side – arrows pointing upward)
Maximum stacking height
Example: non-stackable – do not pile any further
packaging boxes on top of the first packaging box