SKF EAZ Manuale utente
SKF EAZ
SKF EAZ CC
Instructions for use
2 EN
Safety recommendations................................................................................................................. 3
EC Declaration of conformity ........................................................................................................... 3
1. Scope of delivery ...................................................................................................................... 4
2. Introduction.............................................................................................................................. 4
2.1 Principle of operation...................................................................................................................................5
3. Technical data........................................................................................................................... 6
4. Installation ............................................................................................................................... 7
4.1 Single output cabinet (EAZ CC…)................................................................................................................8
4.2 Double output cabinet (EAZ CCD…) ...........................................................................................................9
4.3 Transformer adjustment to power supply voltage................................................................................ 10
5. Instructions before use ........................................................................................................... 11
6. Operating instructions ............................................................................................................ 12
6.1 Dismounting............................................................................................................................................... 12
6.2 Mounting .................................................................................................................................................... 14
7. Determination of heating settings ........................................................................................... 15
8. Safety features ....................................................................................................................... 15
9. Maintenance ........................................................................................................................... 16
Table of contents
Original instructions
3EN
Safety recommendations
• There is a risk of electric hazard. Only qualified
and adequately trained personnel must be
allowed to operate the equipment.
• Due to the magnetic field, during the heating
process observe a safety distance of 1,5 m
(4.9 ft) with the induction heater. People
wearing cardiac pacemakers or having implants
must observe a safety distance of at least
5 meters (16 ft) from the induction heater
during operation. Electronic equipment, such as
wristwatches, mobile phones; but also magnetic
cards or industrial electrical equipment may
also be affected.
• Use proper handling equipment when lifting
heavy workpieces. Secure the workpiece with
appropriate lifting and handling equipment
while heating.
• Avoid contact with hot surfaces.
Always use heat resistant gloves.
• Never modify the heater. All repair work should
be carried out by an SKF repair shop.
• Make sure the supply voltage is correct.
Connecting the induction heater to the wrong
voltage supply will void the warranty and
probably damage the heater.
• Always make sure the heater is securely
connected to earth.
• Do not expose electronic components to high
humidity or water.
• Never introduce body parts into the bore of the
heater during operation.
• Do not use the equipment in case of damage
or heavy wear is detected on the heating coil.
Also, cracked rings must not be heated with the
electrical induction heater.
• The heater should not be used in areas where
there is a risk for explosion.
• Follow the operating instructions at all times.
• The EAZ and EAZ CC are solely intended to heat
up bearing rings, mill rolls and labyrinth rings. It
is not intended to heat up any other component.
• The heater needs to be operated by
professionally trained people.
Do not leave the heater unattended.
Especially when using time mode.
• In case of fire, do not use water nor powder-
based extinguisher. This will damage the
electronics. A CO2based extinguisher is
recommended, if available.
• Be aware that fumes coming from the heated
element might occur.
EC Declaration of conformity
We, SKF Maintenance Products, Meidoornkade 14,
3992 AE Houten, The Netherlands herewith declare
that the products described in these instructions
for use, are in accordance with the conditions of the
following directive:
EMC DIRECTIVE 2014/30/EU and are in conformity
with the following standards:
EN61000-6-1:2007
EN61000-6-3:2007 / A1:2011 / AC:2012
EN61000-3-2:2014
EN61000-3-2:2013
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-5
EN61000-4-6
EN61000-4-8
EN61000-4-11
EUROPEAN LOW VOLTAGE DIRECTIVE 2014/35/EU
EUROPEAN ROHS DIRECTIVE 2011/65/EU
Houten, The Netherlands, February 2019
Sébastien David
Manager Product Development and Quality
4 EN
1. Scope of delivery
The EAZ coil is delivered with:
• EAZ coil
• Heat resistant gloves TMBA G11H
The EAZ Control Cabinet is delivered with:
• EAZ control cabinet
• Support legs
• Grounding cable with magnetic clamp
EAZ CC-GRC
• Control cable EAZ CC-LC
• Temperature probe cable EAZ CC-TPC
• Temperature probe TMBH 1-3
Fig.1 – EAZ control cabinet
Fig.3 – Grounding cable with
magnetic clamp EAZ CC-GRC
Fig.4 – Control cable EAZ CC-LC
and temperature probe cable
EAZ CC-TPC
Fig.5 – Temperature probe TMBH 1-3
2. Introduction
The fixed induction heaters are used for mounting
and dismounting of:
• Inner rings of cylindrical roller bearings,
• Roll groove rings of cold reducing machines and
• Roll body side labyrinth rings of bearing
arrangements.
They are used where large number of bearings
of the same design are used or where large
bearings with tight fit are frequently mounted and
dismounted. They are intended for one particular
bearing and one particular application.
Fig.2 – Support legs
5EN
2.1 Principle of operation
The fixed induction heaters consist of a cylindrical
induction coil made of copper wire permanently
mounted in a housing serving as mechanical
extractor. Depending on the size of the heater, two
different executions exist as per †fig. 6 and †fig. 7.
Fig.6 – Standard execution for rings up to 380 mm
Fig.7 – Special execution for odd and large component
When the heater is switched on, electric current
runs through the coil, generating a fluctuating
magnetic field, but no heat on the EAZ coil itself.
However, once you set an iron or stainless-steel
component on inside of the EAZ coil, the magnetic
field induces many smaller electric currents (Eddy
currents) in the component metal. Because iron is
a poor conductor of electricity, when all these small
currents run through the iron, much of the energy
is converted into heat. This heat will cause the ring
to expand.
After a pre-determined heating time or
temperature, the ring can be withdrawn from the
shaft or mounted into it.
6 EN
3. Technical data
Because every heater is a custom-made unit, the
user can fill in the following fields by himself looking
at the specifications and drawings delivered with
the unit.
Product designation :
Recommended
control cabinet
:
B
dF
Heater dimensions
- Width :
- Housing height :
- Inner diameter :
- Housing width :
- Cable length :
- Weight :
Component dimensions
- Bearing designation or
drawing number :
- Inner diameter (d) :
- Outer diameter (F) :
- Width (B) :
7EN
Application
- Drawing number :
- Neck diameter :
- Interference fit :
4. Installation
The EAZ coil is meant to work only with SKF EAZ
control cabinet and vice versa. This is the only way
we can ensure the right performance of the tool.
The power supply needs to be 3 phases+ neutral +
ground. We will only use 2 phases out of the 3 of
them and the ground. We won’t use the neutral.
The cable to connect the mains and the control
cabinet is not delivered with the product. It is for the
user to arrange the right cable. A qualified electrician
should install this.
IMPORTANT:
The EAZ Control Cabinet and EAZ coil might create
some disturbance in other electrical equipment
connected to the same power supply line. To avoid
this, the EAZ Control Cabinet and EAZ coil need to
be connected to a dedicated power line.
8 EN
4.1 Single output cabinet (EAZ CC…)
Power supply
EAZ coil
9EN
4.2 Double output cabinet (EAZ CCD…)
EAZ coil A
Power supply
EAZ coil B
10 EN
4.3 Transformer adjustment to power
supply voltage
The cabinets include a transformer for generate
230V for the inside electronics. This must be
adjusted properly to make sure that the output of
this transformer is well within the acceptable range
for the parts connected to it. This operation must be
done by an electrician.
IMPORTANT:
Be aware that this adjustment is not changing the
specifications range of the cabinet.
A cabinet meant to work at 400V/50Hz can only be
set at 380 or 420V/50Hz.
A cabinet meant to work at 440-480V/60Hz can
only work at 440, 460 and 480V/60Hz, but not at
400V (for example).
As we can see in the below picture, the transformer
has 6 connection points at the bottom. We must
read the connections table on the transformer:
NOTE:
In this case the table is as per below, but this can be
different in the one you have, so always follow the
transformer table and not the table in this manual:
Voltage Independent
connections
Short circuited
connections
380V 0-1
400V 0-5 1-4
420V 0-4 5-2
440V 0-2
460V 0-5 2-4
480V 0-4 3-5
In the picture below, for 480V we can see that
connections 0 and 4 are connected.
Also 3 and 5 are connected through a cable which
short circuits them.
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