Oil Lubricated Bearings; Oil Mist Lubricated Bearings; Sleeve Bearings - WEG W22 Premium E3 Manual De Instalación, Operación Y Mantenimiento

8.2.2. Oil lubricated bearings

To change the oil of oil lubricated motor proceed as follows:
switch-off the motor;
g
remove threaded oil drain plug;
g
open the valve and drain the oil;
g
close the drain vale again;
g
reinstall the threaded oil drain plug;
g
fill-up with the type and amount of oil as specified on the nameplate;
g
check oil level. The oil level is OK when the lubricant can be viewed approximately in the center of the sight
g
glass;
reinstall oil inlet plug;
g
check for oil leaks and ensure that all not used threaded plugs are closed with plugs.
g
The bearing lubricating oil must be replaced as specified on the nameplate or whenever changes in the oil
properties are noticed. The oil viscosity and pH must be checked periodically. The oil level must be checked
every day and must be kept in the center of the sight glass.
Please contact WEG, when oils with different viscosities should be used.
Note:
The HGF vertical mounted motors with high axial thrust are supplied with grease lubricated DE-bearings and with oil lubricated NDE-
bearings. The DE-bearings must be lubricated according to recommendations in item 8.2.1. Table 8.5 specifies the oil type and the
amount of oil required for this motor lubrication.
Table 8.5 – Oil properties for HGF vertical mounted motors with high axial thrust
Frame
IEC NEMA
315L/A/B e 5006/7/8T e
315C/D/E 5009/10/11T
355L/A/B e 5807/8/9T e
355C/D/E 5810/11/12T
400L/A/B e 6806/7/8T e
400C/D/E 6809/10/11T
450 7006/10

8.2.3. Oil mist lubricated bearings

Check the service conditions of the seals and if replacement is required use only original components. Clean
the seal components before assembly (bearing caps, end shields, etc.).
Apply joint sealant between the bearing caps and end shields. The joint sealant must be compatible with the
used lubricating oil. Connect the oil lubricant tubes (oil inlet and oil outlet tubes and motor drain tube), as
shown in Figure 6.12.

8.2.4. Sleeve bearings

The lubricating oil of sleeve bearings must be changed at the intervals specified in Table 8.6. To replace the oil,
proceed as follows:
NDE-bearing: remove the protection plate from the fan cover;
g
Drain the oil through the drain hole located at the bottom of the bearing (see Figure 8.1);
g
Close the oil drain hole;
g
Remove the oil inlet plug;
g
Fill the sleeve bearing with the specified oil and with the amount of oil specified in;
g
Check the oil level and ensure it is kept close to the center of the sight glass;
g
Install the oil inlet plug;
g
Check for oil leaks.
g
Bearing
Poles Oil (liters)
designation
4 - 8 29320
4 - 8 29320
4 - 8 29320
4 - 8 29320
Oil sight glass
Figure 8.1 – Sleeve bearing
Interval (h) Lubricant
20
26
Renolin
8000 DTA 40 /
37
SHC 629
45
Oil inlet
Oil outlet
Manual of Electric Motors
www.weg.net
Lubricant
specification
ISO VG150
mineral oil
with antifoam
and
antioxidant
additives
115