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9-26
Application Notes
Mean speed
Shaft load frame size 100
Type "N" / "R"
x [mm]
The initialization and deceleration times can be ignored in the calculation
if the time in which the drive is operated at a constant speed is
significantly higher than the acceleration and deceleration time. In the
exact calculation of the mean speed according to the following example,
the run-up and braking times are taken into account.
=
n
1
m
n
:
mean speed in section 1
1m
n
:
processing speed
1m
t
:
run-up time
H1
t
processing time
1:
t
:
braking time
B1
t
:
standstill time
11
Fig. 9-32:
MAD mean speed
A complete processing cycle can consist of several sections with different
speeds. In this case, the average is to be generated from all the sections.
"N":
Standard bearings
"R":
Bearing for coupling connection
"H":
High-speed bearing
(1):
Load limit for drive shaft without key
(2):
Load limit for drive shaft with key
n
:
Mean speed
m
Fig. 9-33:
Shaft load frame size 100 (L
n
•
+
1
t
n
H
1
2
+
t
t
H
1
1
n
: mean speed in section 2
2m
n
:
processing speed
2
t
: run-up time
H2
t
processing time
2:
t
: braking time
B2
t
:
standstill time
22
Type "H"
x [mm]
=30,000 operating hours)
h
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
Rexroth IndraDyn A
Average.EPS
n
•
+
t
1
1
2
+
+
t
t
B
1
1
Wellenbelastung MAx100.EPS
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