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Operating Conditions
3.
Operating Conditions
3.1
Degree of protection
The motors SM.5 series are generally designed to meet degree of protection IP 65 as specified in DIN EN 60034-5
(option separately driven fan: IP 54). See table below for the respective sealing.
Shaft sealing
Grease-packed groove
(standard)
Rotary shaft seal
(Option)
Lubrication of
the rotary shaft
3.2
Cooling, altitude, ambient conditions
The rated power (rated torque) applies to
continuous operation (duty type S1) at a coo-
lant temperature of 40°C and an altitude of up
to 1,000 m above sea level. It is determined
by using defined aluminium test flanges (see
table opposite).
Larger mounting flanges improve the heat dis-
sipation conditions whereas smaller flanges
deteriorate them. Since a large number of
influencing factors have to be taken into ac-
count no reliable estimation of the required
power reduction can be made.
If the motor flange is thermally insulated, it is
not able to dissipate the motor heat. This re-
quires a reduction of the rated motor torque.
At higher temperatures or altitudes, the over-
load capability of the motors is reduced (see
table opposite).
Fire- and
combustion
protection
GB - 16
Degree of
User information
protection
The effect to moisture in the shaft and flange area must be kept to a mi-
IP 64
nimum. No liquid may remain in the D end shield, if the motor is mounted
with the "shaft end upward" (IM V3, IM V36).
IP 65
Suitable for the installation of non-sealed gear units to seal against oil.
When using a rotary shaft seal, note that the sealing lip needs to be sufficiently
lubricated and cooled with a high-quality mineral oil such as SAE 20 to ensure the
proper functioning of the seal. Sufficient lubricant supply is required for proper heat
dissipation.
If the shaft seal is greased, the maximum permissible motor speed may need to
seal
be reduced.
Regular regreasing is imperative !
Excessive peripheral speeds destroy the sealing lip and its protective function is
no longer guaranteed.
The motors can reach a surface temperature of more than 100°C. No temperature-
sensitive parts may lay close to or be attached onto the motor. If necessary, pro-
tective measurements must be taken against touching.
Motor type
55
70
92
110
140
190
Altitude above sea
level [m]
<30
1000
1.07
1500
1.04
2000
1.00
2500
0.96
3000
0.92
3500
0.88
4000
0.82
Test flange dimensions
200 x 100 x 10
230 x 150 x 15
230 x 150 x 15
230 x 150 x 15
300 x 300 x 20
300 x 300 x 20
Coolant temperature [°C]
30-40
45
50
55
1.00
0.96
0.92
0.87
0.97
0.93
0.89
0.84
0.94
0.90
0.86
0.82
0.90
0.86
0.83
0.78
0.86
0.82
0.79
0.75
0.82
0.79
0.75
0.71
0.77
0.74
0.71
0.67
60
0.82
0.79
0.77
0.74
0.70
0.67
0.63
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