Coolant characteristics
Adjust the required coolant, especially the material compatibility must be
specified with the manufacturer of the cooling unit and the manufacturer of
the coolant additives. The basic minimum requirements for the coolant are
displayed in the following.
Coolant characteristics for energy storage devices with internal cooling circuit made of stain‐
less steel.
pH value (bei 20 °C)
6 ... 9
Total hardness
1.2 ... 2.5 mmol/l
Chloride concentration
< 150 ppm
Sulfate concentration
< 200 ppm
Nitrate concentration
< 50 ppm
Amount solutes
< 350 ppm
Particle size of dirt
≤ 100 µm
Conductivity
< 2000 µS/cm
Tab. 9-7:
Coolant characteristics
Coolant additives
The following table shows several manufacturers of cooling additives. Prod‐
ucts of other manufacturers can be also be used.
Nalco Deutschland GmbH
http://www.nalco.com
FUCHS PETROLUB AG
http://www.fuchs-oil.com
Clariant Produkte (Germany) GmbH
http://www.antifrogen.de
hebro chemie GmbH
http://www.hebro-chemie.de
TYFOROP Chemie GmbH
http://www.tyfo.de
Schweizer-Chemie GmbH
http://www.schweitzer-chemie.de
Tab. 9-8:
Manufacturer of chemical additives
Bosch Rexroth does not make any general statement and does
not conduct any surveys regarding the suitability of device-specif‐
ic cooling media, additives or operating conditions and does not
assume any warranty for third-party products.
The performance test for the used cooling media and the design
of the liquid cooling system is the responsibility of the machine
manufacturer. The selected coolant additives have to comply with
the materials within the cooling system.
Comply with the environmental protection and waste disposal in‐
structions at the place of installation when selecting the coolant
additives.
The proper chemical treatment of the closed water systems is precondition to
prevent corrosion, to maintain thermal transmission, and to minimize the
growth of bacteria in all parts of the system.
Coolant additives of NALCO Deutschland GmbH (example):
Coolant water Nalco CCL100 is a ready-to-use, preserved cooling water for
use in closed cooling water systems. Nalco CCL100 contains corrosion inhib‐
itor protecting ferrous metal, copper, copper alloys and aluminum. The water
is free from nitrite and minimizes the micro-biological growth.
Coolant additive NALCO TRAC100 is a liquid corrosion and film inhibitor for
the use in closed cooling systems. Nalco TRAC100 is a complete inhibitor
42/73
Application notes
BA1N Kinetic Energy Buffer
Bosch Rexroth AG R911393264_Edition 01
Summary of Contents for Rexroth BA1N
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