Strack PowerMax PMOKL-V04 User manual

PowerMax
that‘s the future
kompakt light
CAM UNIT
PMOKL-V04
OPERATING INSTRUCTIONS
STAND 09.2022

2STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
Contents: Page:
Preamble 4
1. Safety instructions. Please absolutely consider! 5
2. After receipt of delivery 6
3. Features 7
3.1 Description of the designs 8
4. Scope of delivery 8
5. Design of the PowerMax side cams 9
6. Preparation of tool and press 10
7. Shouldering 10
7.1.1 Dowel pin (old „Z“) 11
7.1.2 Slot nuts LONG + CROSS (old „N“) 12
7.1.3 Slot nut CROSS + dowel pin 12
7.1.4 Slot nut LONG + dowel pin 12
8. Production 13
8.1 Handling with safety ring bolt (SN1594) 14
8.1.1 Mounting of the cam slide in the cam retainer 14
8.1.2 Mounting of the cam slide with cam retainer in the upper part of the tool 14
with central transport thread
8.1.3 Mounting of the cam slide with cam retainer in the upper part of the tool 14
with lateral transport thread
9. Marking of the cams 15
9.1 Optional sensor for position monitoring 17
10. Information concering Lock-Out-System SN5654-LOS 18
11. Disassembly / assembly / of the gas spring 19
11.1 Cam lock 20
12. Modification of the system pressure of the gas springs 20
12.1 Releasing of the pressure at a gas spring 20
12.2 Increasing of the pressure / filling of a gas spring 21
13. Standstill and storage 23
14. Maintenance 23
14.1 Pre-adjustment of the active return 24
14.2 Adjustment of the forced return 25
14.3 Lubrication 26
15. Appendix 29
15.1 Internet and CAD 29
15.2 Lubricant Z9084 30

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09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
15.3 Limit switch Z7685 31
15.4 General description gas springs 32
15.5 Maximum working conditions for gas springs 33
15.6 Calculations gas springs 34
15.7 Installation instructions gas springs 35
15.8 Filling pressure table gas springs 36
15.9 Effect of changing the driver position 37
15.10 Exploded view and parts list 39
Contents: Page:

4
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
Preamble
Thank you for your confidence in the product of STRACK NORMA GmbH & Co. KG.
We are pleased that you have chosen a product of STRACK. To facilitate your handling of the product, we
prepared these operating instructions.
This operating manual is an important document for the side cam unit SN5650-PMO and serves for the
safe and efficient operation. It is intended for all persons handling this cam-unit or for persons being res-
ponsible for its safe operation
For reasons of operational safety, a copy of these operating instructions must be left at the machine with
the side cam unit to ensure direct access for the operating staff.
The safety instructions in this operating instruction have to be particularly observed to recognize and to
avoid possible dangers. Read the operating instruction carefully and completely before mounting and
starting-up the cam unit SN5650.
A regular maintenance is necessary to ensure a safe and economic use.
If the regulations and notes of these operating instructions are not considered, any liability on our part for
resulting damages and loss of performance is excluded.
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460

5
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
1. Safety instructions. Please absolutely observe!
Please absolutely read and observe the following safety instructions before mounting and starting-up and
all further works at the STRACK PowerMax cam.
The cam must be used according to this operating instruction. When a new operating instruction is publis-
hed, this version loses its validity.
Service and maintenance work at mounted STRACK nitrogen gas springs may only be effected by per-
sons trained and instructed by STRACK NORMA with good technical knowledge.
If the mounted STRACK nitrogen gas spring is used improperly or for purposes other than those for which
it is intended there is a risk of:
Dangers to health,
Danger to the STRACK nitrogen gas springs and other assets of the user,
Danger to the efficiency of the STRACK nitrogen gas springs.
For all work at the STRACK side cam the valid industrial safety ordinance, section 3, must be observed.
Press, tool, and peripheral devices must be suitable, prepared and coordinated for the use of STRACK
side cams.
Attention:
There is the risk of accident before and during the service- and maintenance works at the
tool or the STRACK cam. For this reason, these works may exclusively be carried out at
retracted side cam units.
Jammed cam unit can lead to abrupt relaxation with intact gas springs and can thus be a
risk of injury.
Damaged gas springs must not be reused. The exchange of individual components has to be discussed
with STRACK NORMA.

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STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
2. After receipt of delivery
Examine the delivery for external damage before opening. Immediately report any damage to the transport
company, that delivered the consignment.
Compare the content of your consignment with the delivery bill or the enclosed parts list (see appendix).
Ensure that all parts are present and unpacked.
Only then dispose of the transport- and packaging material.
If the contents are damaged without external damage of the packaging do not return it for repair or ex-
change.
Please contact STRACK NORMA GmbH & Co. KG in Lüdenscheid for further information.
CONTACT:
Team PowerMax, Automotive
Phone: 02351 / 8701 - 7300
E-Mail: [email protected]

7
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
3. Features
The design of this STRACK cam unit is a „side cam unit type SN5650“. This PowerMax cam unit consists
of:
- Cam retainer
- Cam body
- Driver
with the corresponding attachments.
All PowerMax cam units are equipped with gas springs.
As pressure medium for the gas springs in this system nitrogen with a purity level
≥99,8 Vol.-% is used.
Cylinder size, -number and filling pressure (different for the different cam types) determine the available
restoring force.
Please consider that all PowerMax cam units are the successful result of a long development effort. The
resulting technical advantages unfold optimally when the respective cam stroke is completely used during
the working process, i.e., the punching-/bending operation of the cam unit should take place in the front-
end position.
The complete utilization of the cam stroke allows the maximum intervention of the active return and thus
the highest possible provision of retraction- or stripping forces (about 10% of the press force).
At the front-end point of the cam stroke the maximum return force of the gas spring is applied. In gene-
ral, the following applies: The design and the resulting values such as installation height and return forces
require that the cam unit is installed in the specified front-end position.

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STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
3.1 Beschreibung der Bauarten
The compact slide is equipped with sintered metal sliding elements, the working surface is made of
cast iron and the active retraction is adjustable.
Attention:
The installed gas springs serve to additionally retract the cam slide.
The working forces required for this operation are absorbed by the active return.
4. Scope of delivery
The PowerMax cam units are delivered preassembled and adjusted with precise guide play.
The installed gas springs are delivered with the maximum filling pressure unless otherwise reques-
ted.
The working surface can already contain customer-specific machining.
All cams can also be manufactured for the processing of high-strength sheet metal, contrary to the
angles shown in the catalogue in steps of 5, in all intermediate angles according to customer requi-
rements.
Please contact us.

9
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
51
54
56
57
54
52
48
44
67
73
77
78
74
69
63
56
238
290
364
383
303
250
204
159
141
159
179
184
164
146
126
104
165
96
107
117
120
109
100
88
75
3 x 20 3 x 20
3 x 15
46
47
47
47
47
47
44
41
46
57
57
57
57
57
57
51
88
109
109
109
109
109
109
109
72
88
88
88
88
88
88
88
57
72
72
72
72
72
72
72
72
88
88
88
88
88
88
88
57
72
72
72
72
72
72
72
51
54
56
57
54
52
48
44
67
73
77
78
74
69
63
56
141
159
179
184
164
146
126
104
96
107
117
120
109
100
88
75
46
47
47
47
47
47
44
41
46
57
57
57
57
57
57
51
4 x 16
130
4 x 16,5
F max. = 418 kN
Bsp.: SN5650-PMO-0230-20-E0-G0-S0
5. Design of the PowerMax side cams
STRACK NORMA PowerMax cams are manufactured with high precision.
The guides, which are ground to a tight guide play, allow highest loads. The side cam units can be loa-
ded with the tool on the work surface. It is important to ensure that the force is applied in the centre of
the work surface.
If the load is off-centre, uneven forces are
exerted on the guides and cause increased
wear.
This clearly shows the maximum power outside the centre of action for the X or Y axis. Possible future
changes in position should be considered in advance to select a cam size that corresponds to the force.
In order to be able to guarantee the same service life, the load forces are reduced depending on the
position on the working surface.
For exact details, please refer to the catalogue information for your cam on the internet at
www.strack.de
Attention:
If the cam is to be built over with attachments, a
new calculation is necessary.
Please contact us.

10
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
FP
FS
FW
FA
h1
h2
Fh1
Fh2
W
6. Preparation of tool and press
Tool, press and peripheral devices must be suitable, prepared and coordinated for the use of STRACK
PowerMax cam units according to the specifications of STRACK.
Drain off liquid (e.g., water or drawing oil) in a targeted manner using a drainage system.
Ensure that the punching waste does not fall into or onto the cam guide.
Cam slide and guide can jam. Parts falling down can damage the guides, which may reduce the ser-
vice life of the cam. In case of failure the cam slide cannot be returned to its original position.
7. Shouldering
The force distribution of the individual forces in the cam depends on the right shouldering in the tool
and the cam angle.
If the heights h1 and h2 (see figure below) in the tool are reduced, the forces of the shouldering cannot
be fully born.
For exact details, please refer to the catalogue information for your cam on the internet
at www.strack.de

11
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
7.1. Centring in the tool by means of dowel pin and/or slot nuts
In version V04 STRACK Norma has combined the „Z“ dowel pin and „N“ slot nut from the familiar centrings
in a new version. This offers the user new flexible possibilities as described under
7.1.1 up to 7.1.4.
COMBINATIONS ARE FREELY SELECTABLE BY THE CUSTOMER:
7.1.1 Dowel pin (old „Z“)
7.1.2 Slot nuts LONG + CROSS (old “N“)
7.1.3 Slot nut CROSS + dowel pin
7.1.4 Slot nut LONG + dowel pin
7.1.1 Dowel pin (old „Z“)
• Position cam retainer in the tool
• Set dowel pin
Direction of fine adjustment possible before pinning in both
positions
End position fixed by dowel pin

12
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
7.1.3 Slot nut CROSS + dowel pin
• Slide retainer fixed in the upper part of the tool in longi-
tudinal axis by feather key.
• Can be moved transversely for fine positioning
• Dowel pin sets final position
Fine adjustment not possible
End position determined by slot nuts
Direction of fine adjustment
End position is determined by dowel pin
Direction of fine adjustment
End position is determined by dowel pin
7.1.2 SLOT NUTS LONG + CROSS (OLD “N“)
• Slot nuts in longitudinal- and transverse direction determine position
7.1.4 Slot nut LONG + dowel pin
• Cam retainer is fixed in the upper part of
the tool in transverse axis by feather key.
• Can be moved longitudinally for fine positioning
• Dowel pin sets final position
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460

13
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
8. Production
During production no special precautions have to be taken that go beyond the valid Industrial Safe Ordi-
nance paragraph 3.
Attention:
If attachments are dismounted in the assembly process, these must be then
secured again with Loctite 242.
Notes on tightening torques:
Note:
Make sure that the STRACK PowerMax cams, especially the gas springs are not im
mersed in liquid.
If, for example, aggressive drawing oils are used during the production, create a
controlled drain (drainage holes, cut-outs etc.) for this so that the liquids are led
away from the gas springs.
This prevents damage to the seals.
Tip:
Check the nitrogen pressure of the gas springs at regular intervals to detect
changes in the pressure level in time. When carrying out maintenance work make
sure that the cam slide is properly returned.
Note:
The PowerMax cam units are equipped with low-maintenance slide elements out of
SNS-sintered metal. Normally a lubrication is not necessary.
If necessary, a lubrication can only be carried out according to chapter 14
Maintenance.

Screws
DIN EN ISO 4762-10.9 M6 M8 M10 M12 M16 M20
Tightening torque [Nm] 14 33 65 121 302 590
All informa-
tion without
warranty

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STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
8.1 Handling with safety ring bolt (SN1594)
8.1.1 Mounting of the cam slide in the cam retainer
From cam widths 125 onwards, the cam retainer and
slide can be mounted together in a simplified manner
by means of the safety ring bolt SN1594 as the different
positions of the threads of the supporting screws facilitate
the threading of the cam slide in the cam retainer.
8.1.2 8.1.2 Mounting of the cam slide with cam retainer in the upper part of the
tool with central transport thread
By changing of the position of the safety ring
bolt, the cam retainer and cam slide can be
mounted more easily together in the tool.
8.1.3 Mounting of the cam slide with cam retainer in the upper part of the tool
with lateral transport thread
Installation of cam retainer with cam slide in the tool with
lateral thread for flexible installation and turning of the cam.

15
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
ATTENTION: Do not remove these bars. If this should become necessary in the event of a
crash, the replacement bars must be adjusted accordingly.
9. Marking of the cams
All PowerMax cams are equipped with a type plate.
The name and the serial number are lasered onto this type plate.
Cam designation
6-digit serial number for
additional information of
the customer
The serial number refers to all cams of an order and is different from order to order. The PowerMax-cams
were adjusted at STRACK. For this purpose, the hardened steel slide bars were ground to the appropriate
size. The corresponding screws were additionally secured with Z9093 screw locking adhesive.
To avoid confusion within a series, the assemblies of the individual sliders within a series are marked with
serial numbers (see picture below). During the mounting make absolutely sure that the components are cor-
rectly assigned in order to avoid problems.
Additional markings on the cam retainer and cam body
make it possible to control the position of the cam in the
tool.
When the cam is retracted the upper markings are stan-
ding together, at extended cams the lower markings are
standing together.
If the marking on the cam body is between those of the
retainer, the whole cam is not returned to the correct
starting position.

16
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09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
ATTENTION: If the mark on the slide body
is between those on the seat, the entire sli-
de has not returned to the correct starting
position. This can happen in the event of a
crash or a defective gas spring.
In this case, the gas spring must be che-
cked.
If it is defective, it must be replaced.
Additional markings on the slide holder and slide body make it possible to check the position of the slide in
the tool.
When the slider is retracted, the upper markings are together, when the slider is extended, the lower mar-
kings are together.
Slider in UT-position Slider in OT-position

17
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09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
9.1 Optional sensor for position monitoring
Optionally the PowerMax cams can be ordered with a sensor for position monitoring. The sensor plate
contacts the inductive limit switch Z7685 during the upward movement and signals to the machine that
the cam slide is in the rearmost position.
For more information on the Z7685 limit switch see the appendix.

18
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IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
0,00
±0
0,00 ±0
10. Information concerning Lock-Out-System SN5654-LOS
Force distribution:
With the newly developed Lock-Out-System it is possible
to fix the corresponding cam without play in its
front-end position.
For this purpose, the cam body is screwed with the
cam retainer. The special feature of this system is, that
the clamping screws act at an angle to the
corresponding bearing surface.
That means that the cam body is pulled by the divided
(resulting) forces once against the prismatically arranged
sliding strips and simultaneously at the pressure piece.
Now, the cam body is exactly positioned without play in
its front-end position and is now prepared for additional
machining.
Please consider that the Lock-Out-System can only be used
with dismounted cams.
With most of the PowerMax-cams, the fixing holes are partially covered if the cam body is in the front-
end position.

19
STRACK NORMA GmbH & Co. KG · Königsberger Str. 11 · D-58511 Lüdenscheid · Tel [phone] · www.strack.de
09.2022
IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
PowerMax cam unit SN5650-PMOKL-0065 — SN5650-PMOKL-0460
11. Disassembly/ Assembly of the gas springs
To remove the gas spring from the cam, at first the locking screw and the bayonet lock have to be de-
mounted.
Attention: the slide carriage falls into its lower end position after removing the bayonet catch
(2). From a slide width of 230, the slide carriage must be secured in the rear position by the
additional component SN5650PM-FPS (4) in the slide stop (5). The installation is done in re-
verse order. To do this, the slide carriage must be pulled back in order to be able to turn the
bayonet catch (2). The bayonet catch (2) must then be secured with the locking screw (1).
1
2
3
4
5
12
3
1. Disassembly of the gas springs
Loosen the locking screw (fig. 1). Then de-
mount the bayonet lock by turning the plug
by 90° (fig. 2). Remove the gas spring (fig.3).
Locking
screw for
cam slide
Locking
screw for
cam slide
2. Assembly of the gas springs
Insert the gas spring (3) in the hole provided (fig.
4). Insert the bayonet lock (2) in the provided hole
and turn it by 90°.
Then screw in the locking screw (1) and tighten it
with 33 Nm.
ATTENTION!
Use Loctite 243 medium strength to secure the
screw.
Fig. 2
Fig. 1
Fig. 4
Fig. 3

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IOperating Instructions -- PowerMax Scam unit PMOKL
PowerMax
11.1 Schiebersicherung
To ensure that the slide does not slip into the lowest position
when removing the gas pressure spring (see point 11) or during
maintenance, secure the slide against the slide stop with the
additional component SN5650-FPS (5). To do this, pull the slide
into the rearmost position and screw it against the stop with the
locking screw. The screw prevents the slide body from sliding
down.
To avoid damage or a crash, the locking screw must
be removed again before production begins after
maintenance work has been completed or after the
gas strut has been replaced (see point 11).
5
12. Modification of the system pressure of the gas springs
12.1 Releasing of the pressure of a gas spring
1. If necessary, remove the closing plug.
2. To loosen the valve, use a 3 mm Allen key.
Turn it to the right till the gas escapes (1- 2 turns).
3. As soon as the gas spring is unloaded, turn the valve to the left
until the initial position is reached. The gas spring is ready for filling.