Permanent Magnet Coupling0 pages

Value-added Services and Solutions
“Over the past 35 years, we have accumulated a large database and much know-how
for magnetic coupling applications”
Centre of magnetic knowledge...
Summary
Bakker Magnetics is in an excellent position to meet or exceed all your
demands in all types of power transmission applications by exploring the
applied magnetism, with abundant knowledge and expertise. Above all,
we strive to achieve the best ratio of machine performance and system cost.
Developing a high-performance permanent
magnet coupling device is a highly demanding
task today, driven not only by a rapid development
and commercialization of various magnetic
materials, but also by an ever-growing
business competition and non-saturating
market/customer needs. Bakker Magnetics
is, in such demanding circumstances, able
to and capable of creating more values for
our customers by providing services and
innovative solutions. Just to name a few:
Magnetic material selection, specification
and validation
A booming application of magnetic materials
is in full swing. However, an appropriate and
cost-effective selection of magnetic materials is
becoming a specialist area, due to the fact that
there is a large range of both permanent and soft
magnetic materials of varying types and grades.
Even within each type of magnetic material, the
magnetic, electrical, mechanical and thermal
properties and capabilities change to a great
degree. In case of modern NdFeB permanent
magnets, there are more than 100 types and
grades available for a device design engineer,
including both sintered and bonded types.
Selection and specification of the best magnetic
material for a specific application is a joint
effort of the cost consideration and the material
performance over the device service time in a
specific environment. In this circumstance,
the continuous working temperature and the
maximum transient temperature is a common
issue that has a tremendous impact on the
magnetic material. Furthermore, an appropriate
range of testing and measurement methods
and equipment must be chosen for the
magnets specified to be validated for a targeted
application. Over the past 35 years, we
have accumulated a large database and much know-how for magnetic coupling
applications.
Magnetic circuit synthesis, analysis and optimization
A desired magnetic circuit structure, for a given magnetic material, delivers a
specific magnetic field profile across a defined air gap, in order to meet or exceed
a torque curve requested or defined by the customer. We have a wide range of expertise
and design tools, both analytically and numerically, to overcome any coupling
challenge.
Magnetization, stabilization and demagnetization service
Permanent magnets, and in particular high energy rare earth magnets, are difficult
or even dangerous to handle. It is preferred, in some cases, that the magnets
are assembled in a non-magnetized state which will be magnetized after a final
assembly. In this context, an appropriate magnetizer, which could be DC-electromagnetic
field, pulsed field, or even permanent magnetic field-based, must be
compared and selected. Quality of permanent magnet magnetization, including
level of saturation, magnetization/orientation direction and its deviation, plays a key
role in permanent magnet coupling performance.
Rapid prototyping and testing
Once the design and optimization of a specific PMC is finalized, it is common to
make a prototype in order to ascertain and evaluate the design results. We are able
to perform a fast prototyping made by our skilled technicians with a number of
modern machine tools.
Assembly know-how
Great care must be taken when assembling or mounting magnetized high energy
rare earth permanent magnets due to a dangerous repulsion and attraction among
the magnets themselves, and between the magnets and the soft magnetic steels
as a flux return path.
We have considerable experience in permanent magnet gluing, screwing, anchoring
and retaining by various high strength sleeves or tapes. In addition, a large number
of in-house assembly tools and methods for various magnetic components and
devices have been developed.
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Centre of magnetic knowledge...
Permanent Magnet Couplings
for magnetic Bakker Magnetics b.v. energy transmission
Sciencepark Eindhoven 5502
5692 EL Son - The Netherlands
E-mail: Info@bakkermagnetics.com
Phone: +31 40 2 678 678
Fax: +31 40 2 678 899
www.bakkermagnetics.com
Belgium
Bakker Magnetics Belgium N.V.
E-mail: BE@bakkermagnetics.com
Phone: +32 - 15 29 49 49
Fax: +32 - 15 29 49 40
France
BLS Magnet
E-mail: FR@bakkermagnetics.com
Phone: +33 - 3 82 26 06 00
Fax: +33 - 3 82 26 06 06