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Application notes
Parallel connection
Bosch Rexroth AG R911298798_Edition 08
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Fig. 9-11:
Parallel connection of liquid-cooled drive components
The parallel connection is characterized by nodes in the hydraulic system.
The sum of the coolant streams flowing into a node is equal to the sum of the
coolant streams flowing out of this node. Between two nodes, the pressure
difference (pressure drop) is the same for all intermediate cooling system
branches.
Δp
Pressure drop
Q
Flow quantity
Fig. 9-12:
Pressure drop and flow rate in the parallel connection of hydraulic
components
When several working components are cooled, a parallel connection is ad‐
vantageous for the following reasons:
●
The individual components that are to be cooled can be cooled using
the individual required flow rate. This means a high thermal operational
reliability.
●
Same temperature level at the coolant entry of all components (uniform
machine heating)
●
Same pressure difference between coolant entry and outlet of all com‐
ponents (no high overall pressure required)
MBT High Synchronous Torque Motors
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