ixtur MRP-100NK User manual

25.5.2021
IXTUR OY | VARESPELLONTIE 6, FI-21500 KAARINA FINLAND, WWW.IXTUR.COM
Technical Specifications and
Instructions
PNEUMATIC MAGNET IXTUR MRP-100NK
Original User Manual

Ixtur Ltd / MRP-100NK
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Content
Introduction and Warnings ............................................................................................................................ 2
Technical Specifications ................................................................................................................................ 3
Holding Force .................................................................................................................................................. 4
Installing the Device ....................................................................................................................................... 7
Using the Ixtur MRP-100NK Pneumatic Magnet ....................................................................................... 8
Maintenance and Inspections ....................................................................................................................... 9
Warranty ........................................................................................................................................................... 9
Patent Pending .............................................................................................................................................. 10
Declaration of Conformity ............................................................................................................................ 10

Ixtur Ltd / MRP-100NK
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Introduction and Warnings
MRP-100NK is a pneumatic magnet meant for attaching ferromagnetic parts in lifting, work holding
or automation applications. It is suitable for plates and round objects. The magnet’s state, attached
or detached, is changed pneumatically. MRP-100NK pneumatic magnet doesn’t need compressed
air to keep its state. Air pressure is needed only to change the state from attached to detached or
vice versa.
 Please read this manual carefully before deployment to ensure safe use of the device.
 This device includes a source of magnetic field. A fluctuating magnetic field is produced
during the use in the proximity of the device.
 This device produces a magnetic field that may interfere with medical devices such as
metallic implants or cardiac pacemakers. Do not use this device and keep out of close
proximity unless you have approval from the manufacturer of the medical device or from
your physician.
 Do not disassemble or replace the parts of the device. Only pneumatic connectors are user
changeable.
 The device must not be used for lifting or transporting people.
 The permitted holding force must not be exceeded.
 Always pay special attention to the factors that may decrease the holding force of the
magnet.
 Do not operate a damaged or malfunctioning device.
 The designer and manufacturer of the system, which this device will be integrated into,
should always ensure that the complete system meets the local and national safety
regulations.

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Technical Specifications
Dimensions:
- Length: 120 mm
- Width 103 mm
- Height: 140 mm (Height including pneumatic connectors 156 mm)
- Weight: 10,9 kg
Capacity:
- Rated holding force: 2,9 kN (S355 S ≥ 25 mm plate)
- Rated holding force: 3,5 kN (S355 cylinder 100 mm < ø < 300 mm)
- Rated lifting capacity for plate with safety factor 3: 100 kg (S355 S ≥ 25 mm)
- Rated lifting capacity for solid round object with safety factor 3: 120 kg (100 mm < ø < 300
mm)
- Residual holding force: maximum 5 kg
Residual gripping capacity of MRP-100NK is sensitive to material and geometry of
the lifted part. In extreme case, a part up to 5 kg may stay connected to the magnet.
This may happen just after the magnet has been turned OFF. When this behavior is
critical to the application, the actual parts need to be pretested with the MRP-100NK
magnet.
Environmental conditions:
- Operating temperature: 0 °C … +50 °C
- Storage temperature: -20 °C … +50 °C
- Humidity 0 % … 90 %
- IP67 (The device is protected from dust and temporary immersion up to 1 m)
Requirements for compressed air:
- Recommended pressure: 6.0 bar
- Functional range: 5.0 … 8.0 bar
- Water separation
- Particle filter ≤ 5µm
Information related to medical implants
- Safety distance for a person with active implanted device is 0,5 m of air or other non-
magnetic material. The distance is measured from the magnet or magnetic material
attached to it.
o Maximum static magnetic field of MRP-100NK is 440 ± 40 mT (k=2) on the gripping surface.
o Interference with active implanted devices, e.g. cardiac pacemakers – Action level for expo-
sure to static magnetic fields is 0,5 mT [Directive 2013/35/EC].

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Holding Force
Holding force and rated lifting capacity of MRP-100NK can only be applied when the forces are
perpendicular to the magnet's gripping surface.
The following factors affect magnet’s holding force:
- Material properties
- Thickness and shape of the load
- Distance between gripping surface and attached load (airgap)
- Object diameter when lifting round part
Holding force and lifting capacity of MRP-100NK pneumatic magnet are rated with steel EN S355.
Most other steel materials produce lower holding force. Also hardened steel produces lower hold-
ing force and lifting capacity.
Material’s capacity to conduct magnetic field depends on its thickness. A thinner material has
weaker capacity compared to a thicker material. Increasing material thickness increases the mate-
rial’s capability to conduct magnetic field until the magnet’s specific maximum value is reached.
See figure 2: MRP-100NK lifting capacity in proportion to material thickness. Figure 2 is made for
plate, but same principle is valid also for pipe wall thickness when round parts are lifted.
Any material that separates the magnet's gripping surface from the surface of the load reduces the
total magnetic holding force. Reduction can be caused by non-magnetic materials or by materials
with weak magnetic qualities, such as, zinc or paint or similar coating, rust, frost or air. The dis-
tance between the surfaces caused by materials above is commonly called as airgap.
Surfaces must be clean and the airgap zero to achieve rated holding force. The load surface must
also be flat and it must extend over the gripping surface of the device. See figure 3: MRP-100NK
lifting capacity in proportion to airgap.
In case of round parts, the magnet’s holding force depends also on part’s diameter. Rated holding
force can be achieved with 100 mm < ø < 300 mm. See figure 4: MRP-100NK lifting capacity in
proportion to the diameter of a solid cylindrical part. Cylindrical part is assumed to be solid materi-
al.
Figure 1. The gripping surface and magnetic poles of MRP-100NK

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Figure 2. MRP-100NK lifting capacity in proportion to material thickness
Figure 3. MRP-100NK lifting capacity in proportion to airgap
0
20
40
60
80
100
120
0 5 10 15 20 25 30 35 40
Lifting capacity [kg]
Material thickness [mm]
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
0 0,1 0,2 0,3 0,4 0,5
Lifting capacity [%]
Airgap [mm]

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Figure 4. MRP-100NK lifting capacity in proportion to the diameter of a solid cylindrical part
The holding forces specified in this document are valid for steel EN S355. Most other
magnetic materials result in lower holding force.
The rated lifting capacities are valid for solid cylinders 100 mm < Ø < 300 mm or
plates of 25 mm thick. Pipes or thinner plates lead to lower lifting capacity.
When lifting a piece from a stack, also the piece below the lifted piece can be attached
to the magnet.
The forces caused by acceleration must be considered. For example, sudden moves
cause stronger forces than slow and smooth moves. Sudden moves may drop the load.
Before magnet attachment, make sure that the magnet's gripping surface and the load
material surface are clean of foreign materials to minimize the airgap that reduces the hold-
ing force.
Due to residual magnetism, the magnet's lifting surface may contain small magnetic
particles or pieces which reduce the holding force.
The load material surface may bend, which produces an airgap and reduces the hold-
ing force. Especially thin materials may cause this effect.
Do not lift the load higher than necessary. Unnecessary elevation of the load during
lifting increases the risk of damage or injury.
0
20
40
60
80
100
120
140
0 50 100 150 200 250 300
Lifting capacity [kg]
Cylinder diameter [mm]

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Installing the Device
MRP-100NK pneumatic magnet has mounting threads at top side. Mounting is done using M12
screws (4 pcs.) according to Figure 5. The pneumatic connections are made with 6.0 mm tubing.
Figure 5. Mounting dimensions of MRP-100NK

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When the MRP-100NK magnet is turned ON, a magnetic field is generated between the steel
plates of the magnet.
The installation construction around the magnet must not short-circuit the magnetic field. The parts
of the installation that connect the MRP-100NK steel plates together must be made of non-
magnetic material, e.g. aluminum or stainless steel.
Figure 6. Magnetic field of MRP-100NK
Using the Ixtur MRP-100NK Pneumatic Magnet
The front (logo side) and back steel plates of MRP-100NK have a pneumatic connector. When the
air pressure in the back side pneumatic connection is 6.0 bars higher than in the front side connec-
tion, the magnet is set ON (attach the metal). When the air pressure in the front side pneumatic
connection is 6.0 bars higher than in the back side connection, the magnet is set OFF (detach the
metal). The same pressure in both air hose contacts keeps the magnet’s current state. Even if the
pressure is lost, the magnet keeps the current state. For more accurate air pressure information,
look at the Technical Specifications of this user’s manual.

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Figure 7. MRP-100NK Pneumatic connectors
The magnetic holding force of MRP-100NK magnet weakens, if magnetic field is short circuited
outside gripping surface. This may happen if the steel plates are connected to each other with un-
wanted magnetic material.
If there is a chance that the magnetic field is short circuited by external magnetic part (besides the
load) during the gripping of the load, the MRP-100NK magnet’s steel plates should be shielded by
non-magnetic material from such direction(s).
Short circuiting the magnetic field between the steel plates of MRP-100NK reduces the hold-
ing force and may cause the lifted object to drop. The load must be the only magnetic material in
contact with both plates.
Maintenance and Inspections
MRP-100NK pneumatic magnet is maintenance free.
If MRP-100NK pneumatic magnet has been dropped or it has been exposed to severe impact, the
magnet must be inspected for any damages.
Do not use the device if you notice any damage or malfunction.
Warranty
The MRP-100NK Magnet has a 12 months warranty from the date of delivery. The warranty covers
material and manufacturing defects. Warranty does not cover defects caused by a misuse of the
device against the regulations and instructions in this manual. The warranty does not cover normal
wear and tear.