The first characteristic numeral defines the degree of protection against contact
and penetration of foreign particles. The second code numeral defines the de‐
gree of protection against water.
1st code num‐
ber
Degree of protection
6 Protection against penetration of dust (dust-proof);
complete contact protection
2nd code num‐
ber
Degree of protection
5 Protection against a water jet from a nozzle directed against the
housing from all directions (jet water)
Fig.9-9: IP degrees of protection
The inspections for the second ID number are executed with fresh water.
If cleaning is effected using high pressure and/or solvents, coolants, or pene‐
trating oils, it might be necessary to select a higher degree of protection.
The design of the MKE motors complies with the following Degrees of protection
according to DIN VDE 0470, Part 1, ed. 11/1992 (EN 60529):
Motor area Degree of pro‐
tection
Comment
Motor housing, output shaft, power and
encoder connections (only if mounted
properly)
IP 65 Standard design
Fig.9-10: IP degree of protection for the motors
9.4 Compatibility
All Rexroth controls and drives are developed and tested according to the state
of the art. However, since it is impossible to follow the continuing further de‐
velopment of every material with which our controls and drives could come into
contact (e.g. lubricants on tool machines), reactions with the materials that we
use cannot be ruled out in every case. For this reason, you must execute a
compatibility test between new lubricants, cleansers, etc. and our housings and
device materials before using these products.
9.5 Designs and Installation Positions
MKE motors are available in design B05. Please refer to the table below for the
conditions of installation permissible according to EN 60034-7:1993.
82/131 Bosch Rexroth AG | Electric Drives
and Controls
Rexroth MKE Synchronous Motors | Project Planning Manual
Operating Conditions and Application Notes
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