mag 01°2010 SOlUTIOnS
spot landing
In the new Siemens 1PH8 engine line, forced ventilation units supplied
by ebm-papst provide for optimum operating conditions
Making the best even better — that
was the challenge for the new line
of Siemens motors. Since 1996, Does not just look dynamic,
the 1PH7 series has rendered suc-
but also features a large
performance spectrum:
cessful service as the primary drive
the new 1PH8 motor series
for belt-driven and coupled tooling
machines — around 270,000 of these
units are cooled by fans from Mulfin-
gen. At the end of 2009, the Siemens
Industry division presented the succes-
sor, the new 1PH8 line. These advanced
motors offer benefits that will inspire the
user: excellent refinement and vibrations are
the basis for greater precision, allowing better
quality workpieces to be produced. The motor line
is now more dynamic and has a broad perform-
ance spectrum, a high speed range and it employs
a modular principle that makes it ideal as the motor
standard drive for conventional tooling machine design. Here,
spindles. The motors can also be used in produc- ebm-papst engi-
tion machines such as textile machines, hoists, neers cooperated closely
crane installations and test stands. with the industrial designers at
Siemens. The forced ventilation units had to
one of the modular elements for the 1PH8 is satisfy the design specifications of the lead design “extraction
the forced ventilation unit supplied by ebm-papst agency at Siemens. Together with the motor and over the motor” is also avail-
up to shaft height 160. Experience with the pred- more compact terminal box they were to be treated able. Plant engineers use this version as a vari-
ecessor version showed that precision was impor- as one unit from a single casting. The electronic able drive for lathes in ultra-precise machining
tant when configuring the operating points for the exchange of 3d design models made this harmo- centres because extraction means that tolerance
new line of motors and that the design had to be nisation possible and led, for example, to curved deviations caused by the thermal influence of the
adapted to accommodate the new motor genera- struts on the guard grille, which visualises the air flow are ruled out.
tion. The result is a completely new forced venti- dynamics of the drive. In addition, vibration-free versions, filter and
lation unit. The air performance characteristic is pipe connections for extremely dusty working envi-
precisely configured for the new motors and the Technically, the forced ventilation unit inspires ronments are in the process of implementation.
units also work more quietly. not only with its optimal air performance charac- And the unit is certainly durable: the housing
Motor layout, impeller design and blade setting teristics and minimal noise emissions, but also made of stable die-cast aluminium and fan vanes
have been optimised and the die-cast aluminium with individual options. Apart from the standard made of sheet metal ensure a mean service life of
housings have been configured to suit the new flow direction “blowing over the motor”, a version at least 40,000 operating hours.
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