NOTICE
Mechanical destruction of the motor
If the motor supports the higher forces when force/torque boosting elements are used, the
ange or the feet of the motor, for example, can be torn o.
• Make sure that the force/torque boosting elements, e.g. gearbox or brakes, absorb the
greater forces.
Examples of remedies:
– Choose the correct type of construction.
– Pay attention to correct mechanical mounting of the force/torque boosting elements.
Note
Complying with the belt manufacturer's guidelines
• When dimensioning the radial forces at the shaft extension, ensure that you comply with the
regulations of the belt manufacturers.
• Set the belt tension by means of appropriate measuring instruments.
Calculating the total radial force F
R
for belt couplings
If the belt manufacturer has not provided precise radial force data, the radial force can be
approximately determined using the following formula:
F
R
[N] = c ∙ F
U
F
U
[N] = 2 ∙ 10
7
∙ P / (n ∙ D)
Table 4-22 Explanation of the formula abbreviations
Formula ab‐
breviations
Unit Description
c -- Pre-tensioning factor: The pre-tensioning factor is an experience value pro‐
vided by the belt manufacturer. Values as follows:
• V-belt: c = 1.5 to 2.5
• Special plastic belts (at belts), depending on the load type and belt type
c=2.0 to 2.5
F
U
N Circumferential force
P kW Motor output
n r/min Motor speed
D mm Diameter of belt pulley
Mechanical properties
4.7Radial and axial forces
1PH8 SIMOTICS M main motors
112 Conguration Manual, 12/2022, A5E51895839A
To Next Page
Loading...
Need help?
General