Technical data

Description Manufacturer
Aral cooler antifreeze A ARAL AG, Bochum
BP antifrost X 2270 A Deutsche BP AG, Hamburg
mineral grease concentrate emulsive
Shell Donax CC (WGK: 3) Shell, Hamburg
Fig.9-25: Coolant additives
Bosch Rexroth can give no general statements or investigations
regarding applicability of process-related coolants, additives, or op-
erating conditions.
The performance test for the used coolants and the design of the
liquid coolant system are generally the responsibility of the machine
manufacturer.
Used Materials
The coolant used with MSK motors comes into contact with the materials
named in chapter ”Technical Data – Liquid Cooling”.
In dimensioning and operating the cooling system, the machine manufacturer
has to exclude all chemical or electro-chemical interactions with ensuing cor-
rosion or decomposition of motor parts.
Coolant inlet temperature
IndraDyn S motors (option "FN") are designed according to DIN EN 60034-1
for operating with +10...+40°C coolant inlet temperature. This temperature
range must be strictly observed. At higher coolant temperatures, the reduction
of the available torque is increased. Because of high coolant temperature gra-
dients, lower temperatures can lead to destruction of the motor.
Install systems in the cooling circuit for monitoring flow, pressure
and temperature.
Observe the temperature range permitted and consider the existing ambient
temperature when setting the coolant inlet temperature.
The lower limit of the recommended coolant inlet temperature can be limited
compared to the existing ambient temperature. To avoid condensation, a value
of max. 5°C below the existing ambient temperature is permitted as the lowest
temperature to be set.
Example 1:
Permittable coolant inlet temperature range +10... +10... +40°C
Ambient temperature: +20°C
Set coolant inlet temperature: +15... +40°C
Example 2:
Permittable coolant inlet temperature range +10... +10... +40°C
Ambient temperature: +30°C
Set coolant inlet temperature: +25... +40°C
Setting of the inlet temperature
Project Planning Manual | Rexroth IndraDyn S Electric Drives
and Controls
| Bosch Rexroth AG 173/194
Operating Conditions and Application Notes