MDA Technologies 3/2016

Servo motors with new
multi-turn encoder
B&R has now made available its 8LV
compact servo motors in multiple
sizes with an optional multi-turn
encoder without battery backup. The
multi-turn position is retained even if
the connection between the drive and
motor is interrupted. This option
removes the need for a buffer battery.
The new inductive digital EnDat
2.2 encoders offer a wide variety of
safety functions. These also guarantee
a very high level of control accuracy
and are resistant to disturbances. The
motors are available with a 40, 60 or
80 mm flange and cover a power range
of 0.1 to 1.3 kW. Their compact
dimensions make them the perfect
choice for tight enclosures.
www.br-automation.com
Igus splits slewing ring
bearing
The known iglidur PRTs from igus are
slewing ring bearings that have a
lubrication-free liner between the
inner and outer rings made of
aluminium, which minimises friction
between the two rings. A ‘split’ PRT
originated from the customer’s
request. In this new development, the
iglidur PRT has been constructed in
such a way that it can be placed, for
example, around a pipe or a shaft and
then closed again in its ring shape.
Unlike the usual iglidur PRTs in the
igus range, the sliding elements could
not be used, since they would not have
remained in their positions while
splitting the housing. In this case the
lubricant-free tribo-tape made from
iglidur A160 is used instead.
www.igus.com
Couplings designed to
API Standards
R+W’s LPA series disc pack couplings
are designed to meet every requirement
set forth by the American
Petroleum Institute (API). The double
disc spacer design with keyway
connection is specifically designed for
API 610 centrifugal pump packages.
Due to its pre-assembled, laterally
removable spacer, the LPA couplings
offer a safe and easy installation. The
special safety catch is included to
ensure that the spacer tube is not
thrown from the assembly in the event
of a disc pack rupture. LPA Series disc
pack couplings are available in six
different body sizes for torques
ranging from 400 to 12,000 Nm and
depending on the size, bore diameters
from 23 to 140 mm.
www.rw-couplings.com
Compact drive now in
plug-in module concept
Drive technology from Beckhoff is now
also available as a plug-in module
concept. In combination with a broad
portfolio of Beckhoff motors and
planetary gear units, three new EJ7xxx
EtherCAT plug-in modules enable
especially compact and cost-effective
drive solutions. EJ-series EtherCAT
plug-in modules provide an efficient
wiring solution for machines built in
large and medium-sized production
runs. With new motion modules,
compact drive technology from
Beckhoff is seamlessly integrated into a
plug-in module concept, enabling
extremely compact I/O and motion
solutions that perfectly match customer
requirements.
www.beckhoff.com
Noiseless water cooled
torque motors
Among the rotary axis drives, water
cooled torque motors of the Hiwin
TMRW series are extremely efficient.
Synchronous servo motors are
designed to operate without gears, so
they achieve the highest efficiencies
characterized by constant torques,
maximized dynamic response, and
fast speed changes. Hiwin has
developed its zero-play torque motors
specifically for use in machine tools.
Due to its zero-contact torque transfer,
they operate noiselessly and are
absolutely maintenance free. In
addition, the direct load coupling safeguards
the high rigidity in a very
compact design.
www.hiwin.com
New rotational speed
sensors
Most of the times, the standard-use
rotational speed measurement device
doesn’t exactly fit to the demands of
end users. At this point, hydraulics
suppliers need to find a customized
solution. These customizations come
with additional costs and some
disadvantages. Having faced this
situation all too often, Germany based
Rheintacho’s development team came
up with the new sensor range ‘the FE
series’. It offers 3 different electronic
versions (1-channel, 2-channel,
PWM), 2 different immersion depths
(18.4 mm and 32 mm) and built to
protection classes IP6K9K and IP67.
www.rheintacho.com
MDA Technologies 3/2016