A
B
C2
C1
Y
P
Figure 22. 2-speed BB motor.
A
Y
B
C2
C1
Figure 23. 2-speed BBC motor.
Attention:
Always use C2 port to connect the drain line of a multi-speed BBC motor.
C1 can only be used for flush oil or to install an accumulator into the
motor.
Attention:
Take the following things into consideration, when changing the speed
range during motion.
• Hydraulic system supply must adjust to the rapid change of flowrate.
• The rapid change in flow rate may cause momentary jerk. This may be
avoided by throttling the working lines lightly.
• Prevent operating conditions, in which the permissible performance
values could be exceeded.
The permissible performance values are in the technical data (see
on page 10 and
page 12).
Attention:
Continuous use of high working pressure in the working line B at half
displacement in BB 2-speed motors, may cause premature wear or failure
of the motor.
Note:
Depressurize the 2-speed spool pilot Y to case drain line to prevent
unwanted spool movement.
Motor Description
30
Product Manual
Содержание BB 4
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