Figure 21: Oil lubricated bearings
Change the oil after 200 hours for new bearings, thereafter every 2000 operating hours or 3 months
(whichever comes first). Change more often if oil becomes contaminated with dirt or water. Oil change
volumes are per Table below.
Table 4: Oil Volumes
Oil Volumes
Frame
Liters
Quarts
M
2
2.1
L
2
2.1
XL
3
3.2
A high quality turbine oil with rust and oxidation inhibitors should be used. For the majority of operational
conditions, bearing temperatures will run between 60°C (140°F) and 82°C (180°F). In this range, an oil of
ISO viscosity grade 68 at 40°C (105°F) is recommended. If bearing temperatures exceed 82°C (180°F),
use of ISO viscosity grade 100 is recommended.
Table 5: Lubricating Oil Requirements
Lubricating Oil Requirements
Bearing temper-
ature below
82°C (180° F)
Bearing tem-
perature above
82°C (180° F)
ISO Grade
VG 68
VG 100
Approx. SSU at 38°C
(100°F)
300
470
DIN 51517
C68
C100
Kinematic viscosity at
40°C (105°F) mm2/sec
68
100
Acceptable Oils
Exxon Teresstic EP 68
Chevron GTS Oil 68
5.3 Maintenance of bearings
30
3501 Installation, Operation, and Maintenance Instructions
