Technical data

E239913 MSK040B, -C; MSK050B, -C; MSK060B, -C; MSK070C, -D;
MSK071D, -E
E163211 MSK030B, -C ; MSK061C; MSK076C
The motors have been approved with a file number by the UL authorities and
have been marked on their motor type label with the following sign:
Fig.9-22: cUR mark
9.10.3 CCC (China Compulsory Certification)
The test symbol CCC is a compulsory marking for safety and quality of products
distributed in China.
IndraDyn S motors are not liable to certification regarding CCC in China (status
when printing this documentation).
(CCC = China Compulsory Certification)
9.11 Motor Cooling System
9.11.1 Natural Convection
Rexroth motors in standard design are self-cooling motors. The heat dissipation
occurs over the natural convection to the ambient air and by heat conduction
onto the machine construction.
Pollution of the motors reduces the heat dissipation. Attend to tidi-
ness!
9.11.2 Fan Units
Fan units are available for certain motor types. The stated power data within
the section Technical Data are designated with the index „S“ for surface. You
will find explanations for Technical Data of the available fan units in chapter 7.3
"Fan Units for MSK Motors" on page 126.
9.11.3 Liquid cooling
General
Rexroth motors in liquid-cooled design are suited for extreme loads, e.g. dura-
tion, start, stop-operation with high repetition rates. MSK motors with liquid
cooling are signed in the type code with “FN” under point 5 “Cooling mode”.
Fig.9-23: MSK motors with liquid cooling (type code designation)
The heat dissipation occurs over the used coolant, released via a downstream
heat exchanger to the ambient air.
Coolant lines can be designed either as
● pipeline or as
● tubing system.
Core duct
170/194 Bosch Rexroth AG | Electric Drives
and Controls
Rexroth IndraDyn S | Project Planning Manual
Operating Conditions and Application Notes