Belparts
M2X146B-CHB-10A-33
Swing
Motor
Assy
EC240B
VOE14500382
for
Volvo
Excavator
Belparts
M2X146B-CHB-10A-33
swing
motor
assy
EC240B
VOE14500382
for
Volvo
excavator.
The
slewing
motor
of
an
excavator
is
the
core
hydraulic
actuator
that
enables
360°
rotation
of
the
upper
body.
Its
working
principle
is
based
on
hydraulic
transmission
technology:
high-pressure
oil
output
by
the
hydraulic
pump
enters
the
motor
interior,
pushing
the
rotor
(usually
a
piston
or
gear
structure)
to
rotate
around
the
central
axis.
Then,
the
speed
is
reduced
and
the
torque
is
increased
through
a
reduction
mechanism
(such
as
a
planetary
gear
set),
and
finally,
the
power
is
transmitted
to
the
slewing
bearing
to
drive
the
upper
structures
such
as
the
cab
and
boom
to
rotate
stably.
During
operation,
it
not
only
needs
to
provide
sufficient
torque
to
overcome
the
self-weight
of
the
upper
body
and
the
operating
load
but
also
accurately
control
the
rotation
speed,
start,
and
stop
through
the
hydraulic
valve
group
to
ensure
the
continuity
of
actions
such
as
excavation,
slewing,
and
unloading.
For
example,
during
foundation
pit
excavation,
the
oil
flow
of
the
motor
can
be
adjusted
to
achieve
slow
slewing
alignment
or
rapid
material
transfer.