Humidity; Vibration And Shock; Vibration - Bosch Rexroth MAD Project Planning Manual

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Application notes
9.2

Humidity

9.3

Vibration and shock

9.3.1

Vibration

Bosch Rexroth AG R911295781_Edition 11
Climatic environmental conditions are defined according to different classes
as specified in DIN EN 60721-3-3, Table 1. They are based on worldwide
long-term experiences and take all influencing variables into account, e.g., air
temperature and air humidity.
MAD/MAF motors may be continuously operated within the limit ranges of
class 3K4. The following table provides extracts of this class.
Environmental factor
Low air temperature
High air temperature
Low rel. air humidity
High rel. air humidity
Low absolute air humidity
High absolute air humidity
Temperature change rate
1) The lowest air temperature allowed by Rexroth is 0°C.
Tab. 9-1: Classification of climatic ambient conditions according to DIN EN
60721-3-3, Table 1
Vibrations are sinusoidal oscillations in stationary use, which vary in their ef‐
fect on the resistance of the motors depending on their intensity. The resist‐
ance of the overall system is determined by the weakest component.
Based on DIN EN 60721-3-3 and DIN EN 60068-2-6 , the following values
are allowed for MAD/MAF motors:
Direction
Axial
Radial
(10 m/s² in connection with M2 and S2 encoders)
Tab. 9-2: Maximum values for sinusoidal vibrations
The construction and effectiveness of vibration-absorbing or vibration-decou‐
pling attachments depends on the application and has to be tested using
measurements. This is not the motor manufacturer's responsibility. Modifica‐
tions of the motor design result in loss of the warranty.
MAD / MAF Asynchronous Housing Motors
Unit
°C
°C
%
%
g/m³
g/m³
°C/min
Maximum allowed vibration load
10 – 2000 Hz
10 m/s²
30 m/s²
Class 3K4
+5 1 )
+40
5
95
1
29
0.5