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4.6 Continuous Operation SHG-2UH
The friction of the rotary shaft seals at the input side can result in an increased temperature of the hollow shaft units during
operation. Therefore the defined "Limit for average input speed" of these units is reduced. For continuous operation at rated
speed the max. operating times specified in table 41.2 should not be exceeded.
Alternatively a design according to illustration 41.1 can be used. This application example shows the removal of the rotary
shaft seals at the (fast running) input side. For this design, the operating time is not limited. The removal of one or both
rotary shaft seals at the input element should only be carried out if other measures have been undertaken to prevent the
leakage of grease or oil, or if a leakage can be ruled out due to the installation position.
Illustration 41.1
Max. Permissible Operating Time At Continuous Operation
Table 41.2
Operating time
Unit
At no load
[min]
At rated torque
[min]
The data mentioned in table 41.2 are valid for:
•
Ambient temperature:
•
Input speed:
•
Max. lubrication temperature:
•
Mounting of the unit on a plate with the following dimensions:
Height of plate:
Thickness of plate: 15 mm for sizes: 15 mm for sizes ≤ 32
•
Plate material:
•
An additional output flange is not mounted.
1021387
12/2018
V02
SHG-14
SHG-17
SHG-20
90
90
90
60
60
60
25 °C
2000 rpm
80 °C
330 mm
30 mm for sizes ≥ 40
Steel
SHG-25
SHG-32
SHG-40
60
45
40
45
35
30
SHG-45
SHG-50
SHG-58
35
30
20
25
20
15
SHG-65
15
10
41
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