SIEMENS
5/8
Siemens MD 50.8 · 2017
Gearbox options
Venting and oil level control
5
■
Overview
Gearbox sizes 29 and 39 are supplied ready for operation, lubri-
cated for life and can be operated in mounting positions M1, M3,
M5 and M6 without requiring a pressure breather valve. For
mounting positions M2 and M4, they are equipped with a
pressure breather valve.
Possible venting and oil level control options
■
Pressure breather valve
Fig. 5/4
Pressure breather valve
Technical specifications
■
Oil level checking screw
On gearboxes in mounting positions M1, M3, M5 and M6, the oil
level is checked using the oil level checking screw.
An oil sight glass with a reflector is available to facilitate visual
monitoring.
Fig. 5/5
Oil sight glass
Technical specifications
Design
Possible for
Order code
Bevel gearboxes BH
Size
29
39
Lubricated for life
✓
Pressure breather valve
✓
1)
✓
G45
Oil sight glass
✓
✓
G34
Magnetic oil drain screw
-
-
G53
Bevel gearboxes KH
Size
49
69
79
Pressure breather valve
✓
✓
✓
G45
Oil sight glass
✓
✓
✓
G34
Magnetic oil drain screw
✓
✓
✓
G53
1)
Only with mounting positions M2 and M4
Gearbox type
Size
Width
across
flats
Thread
Dimen-
sion h
SW
mm
Bevel gearboxes B
29, 39
13
G 1/4 A
15
Bevel gearboxes K
49 … 89
13
G 1/4 A
15
Order code:
Pressure breather valve
G45
SW
G_D087_DE_00162
h
Order code:
Oil sight glass
G34
Gearbox type
Size
Width
across
flats
Thread
Dimen-
sion h
SW
mm
Bevel gearboxes BH
29, 39
16
G 1/4 A
10
Bevel gearboxes KH
49 … 79
16
G 1/4 A
10
h
SW
G_D087_XX_00164
© Siemens AG 2017