Manual

24 3-phase stepper motor
3 Technical Data BRS3
0198441113730, V2.02, 03.2011
3.4 IP degree of protection
The motors have the following degrees of protection as per EN 60034-5:
Figure 3.1 IP degree of protection
The total degree of protection is determined by the component with the
lowest degree of protection.
Shaft sealing ring A motor version with a shaft sealing ring is available so that has degree
of protection IP56. In the case of motor versions with shaft sealing ring,
the maximum speed of rotation must be limited to 3000 min
-1
.
Note the following:
• The shaft sealing ring is factory-pre-lubricated.
• If the seals run dry, this increases friction and greatly reduces the
service life of the sealing rings.
• In the case of mounting position IM V3 (drive shaft vertical, shaft
end upward), the motor only has degree of protection IP 41.
321
Item Degree of
protection
1 Shaft bushing without shaft sealing ring
Shaft bushing with shaft sealing ring
1)
Shaft bushing with GBX gearbox
1) Optional in case of BRS39
IP 41
IP 56
IP 54
2 Motor connection IP 56
3 Shaft bushing second shaft end
Rear side of motor with holding brake or encoder
IP 41
IP 56