Vibration Severity Level - Bosch Rexroth MAD Project Planning Manual

MAD / MAF Asynchronous Housing Motors
9.17

Vibration severity level

Oscillating quantity level A (stand‐
ard design)
MAD/MAF motors are dynamically balanced and comply with the limit values
for bearing housing vibration according to EN 60034-14:2004. The motors
are measured in free suspension (see EN 60034-14:2004, chapter 6.2 Free
suspension) and at a specific rpm value (vibration severity grade A) or in
specified speed levels (vibration severity grades B and C).
The following tables give an overview of the position of the various oscillating
quantity levels in connection with other oscillating quantity levels improved
and defined by Bosch Rexroth.
In level A, Rexroth MAD/MAF motors basically achieve better values than the
values required by EN 60034-14:2004. For vibration severity grade A, the
measurement is only effective for the type-depending RPM value.
Admissible vibration speeds
Measurement
Winding
marks
0050
0100
0150
0200
0250
0300
0350
0400
Tab. 9-23: Admissible vibration speeds from a type-depending speed
Vibration speed [mm/s]
speed
Frame size
[min-1]
100 ... 130
500
1000 0.71
1500
2000
2500 1.12
3000
3500
1.8
4000
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Application notes
Frame size
160 ... 225
1.2
1.8
2.8