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About these products
Bosch Rexroth AG, Control block SB24/34, RE 66170-B/2019-05-15
5.3.2 Types of actuation
For mechanical actuation, the control spool is deflected mechanically.
The following types of actuation are possible:
• Rope pull
• Rod system
• Bearing block with operating lever
CAUTION!
The geometry of rope pulls and rod systems is changed by elongation
and temperature. This must be taken into consideration in the design to prevent
undesired mechanical deflection of the control spool.
In case of hydraulic actuation, the pressure at a hydraulic control port is adjusted for
control of a pre-set function.
By means of the PWM pilot signal, proportional solenoids are controlled. The
control valve spool is proportionally actuated by these solenoids by means of
respective hitch deflection.
The CAN bus pilot signal is generated in a control unit according to a fixed protocol.
By means of the directional valve on-board electronics, the CAN bus pilot signal is
converted in a spool deflection at the directional valve.
5.3.3 Definition of control block segment sides
Independent from the LS direction, the flange surface O-ring side always receives
the side designation .
Depending on the arrangement of the tie rod bores and the flange surface O-ring
side , the block segment sides are designated from
…
.
Left-side version (standard)
Right-side version
2
3
4
5
1
6
6
6
B
A
AP
EP
Yo2
3
1
2
2
2
4
5
6
B
A
AP
EP
Yo2
Side :
Consumer port side
Side :
Flange surface O-ring opposite side or connecting plate outer side
Side :
Lower side
Side :
Front face side A (EHS side)
Side :
Front face side B
Side :
Flange surface O-ring side or end plate outer side
Mechanical actuation
Hydraulic actuation
PWM pilot signal
CAN bus control:
