Centrifugal blowers and fans Axial fans

Information
Bearings
As a standard, ball bearings are used unless
other bearings are specified in the relevant
chapters. They are completely maintenancefree
and can be used in any mounting position.
Unless otherwise indicated, the bearing lubricant
is suitable for a minimal ambient temperature
of minus 15 °C (even minus 30 °C for a
short period of time and without reaching dew
point). For applications at an ambient temperature
of 40 °C, minimal life cycle L10 is 40,000
hours. On request, we provide a life cycle calculation
for your specific application.
Sleeve bearings have a very low noise level.
Lifetime lubrication is guaranteed by means of
a special retention medium. However, for use
with suspended motor and at high ambient
temperatures, ball bearings should be used.
Life cycle depends on the ambient temperatures
and application conditions, and up to
30,000 hours are typically attained. Favourable
conditions, though, can result in a life cycle of
40,000 hours.
Safety approvals
Depending on the product, ebm-papst fans and
blowers comply with EN 60335-1, EN 50178,
EN 60950, and EN 60034-1.
Special requests as to flammability rating have
to be specified by the customer.
The major part of the fans and blowers can
also be supplied in CE, VDE, UL, GOST, CCC
and/or CSA approved design.
Ambient temperature
The permissible ambient temperature refers to
the operating points as specified. Axial fans,
when running at free air, have the lowest power
consumption and the lowest temperature rise
in the motor. With rising back pressure, the
motor temperature rises as well. With some
fans, there is a limit as to maximum pressure.
Forward curved centrifugal fans heat up most
at free delivery. With some fans, a minimum
pressure has to be observed. The motor temperature
goes down as soon as back pressure
increases.
The ambient temperatures as given apply to
the characteristic operating range of the fans
and blowers.
VDE
S
Accessories EC-SYSTEMS
EC axial
EC centrifugal
AC axial
AC centrifugal
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