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8. Daily Inspection and Maintenance
Common
8-3 Oil Supply and Oil Change for Oil Lubricated Gear Units
(1) Oil Change Interval
Table 8-4 Lubricating Oil Inspection and Change Intervals
Change Interval
Operating Condition
Oil
supply
Time of purchase
−
Oil
change
First time
After 500 hours or 6 months, whichever comes first.
−
2nd. and
subsequent
times
Every 5,000 hours, or every year, whichever comes
first.
Indoors, etc. at 0 to 35 °C
Every 2,500 hours, or every 6 months, whichever
comes first.
Outdoors or hot locations, etc., where 0 to 35 °C
cannot be maintained.
- Oil degrades more rapidly when ambient temperature is high or changes radically, and when corrosive gases are present. In such
cases confer with the lubricating oil manufacturer.
(2) Recommended Lubricating Oil
Always use lubricating oils recommended by Sumitomo Heavy Industries as shown in Table 8-5.
Table 8-5 Recommended Lubricating Oils (Equivalent to SP type industrial high-pressure gear oil or JIS K2219)
Ambient
temperature °C
COSMO
ENEOS
IDEMITSU
Shell
Mobil
Gulf
CALTEX
bp
-10 to 5
COSMO
GEAR SE
68
BONNOC
M
68
−
Daphne
Super
Gear Oil
68
Shell Omala
S2 G
68
−
Mobilgear
600 XP
68
Gulf EP
Lubricant HD
68
–
Energol
GR-XP
68
0 to 35
COSMO
GEAR SE
100, 150
BONNOC
M
100, 150
BONNOC
TS
150
Daphne
Super
Gear Oil
100, 150
Shell Omala
S2 G
100, 150
Spartan EP
150
Mobilgear
600 XP
100, 150
Gulf EP
Lubricant HD
100, 150
Meropa
100, 150
Energol
GR-XP
100, 150
30 to 50
COSMO
GEAR SE
220 - 460
BONNOC
M
220 - 460
BONNOC
TS
220 - 460
Daphne
Super
Gear Oil
220 - 460
Shell Omala
S2 G
220 - 460
Spartan EP
220 - 460
Mobilgear
600 XP
220 - 460
Gulf EP
Lubricant HD
220 - 460
Meropa
220 - 460
Energol
GR-XP
220 - 460
[1] When using in winter or where the ambient temperature is relatively low, use an oil with a viscosity at the lower end of the range.
[2] For allowable lubricating oil viscosity see Table 8-6. Use within this required viscosity range.
Table 8-6 Allowable Oil Lubricant Viscosity
Minimum allowable
viscosity
For oil temperature during operation,
minimum 15mm
2
/S.
Viscosity that will obtain required film strength under load.
Maximum allowable
viscosity
Oil bath lubricated
models
Maximum
4,300mm
2
/S
Viscosity at which Cyclo Drive can start
Force feed lubricated
models
Maximum
2,200mm
2
/S
Viscosity at which the plunger pump and motorized trochoid pump
can start.
[3] For a smooth startup use oil with a pour point at least 5
℃
below ambient temperature.
[4] If operating temperature changes within a wide range use a high viscosity index oil that meets requirements [2] and [3].
[5] If regularly operating outside the ambient temperature range of 0 to 40
℃
, some parts of the mechanism may need to be
changed, and lubricating oil might need to be preheated, or cooled. Please consult with us.
