Emerson Bettis RTS Service Manual page 11

Service Manual
VCIOM-16909-EN Rev. 0
Table 1.
Operating Condition(s)
Duty Time (DT)
Extremely high DT
High DT
Extremely low DT
Ambient temperature
Extremely changeable
Extremely high
Extremely low
Output speed
High speed
Utilization
Very high
High
Application example:
Extremely low DT + extremely low ambient temperature + high speed + 87% utilization
> 0.8 * 0.9 * 0.8 * 0.9 = 0.51 reduction factor
(Lubrication maintenance interval) 10 years * 0.51 = 5.1 years (62 months).
CAUTION
!
This calculated maintenance interval applies neither to the maintenance of output type A
(threaded bushing) units nor to the maintenance of linear and spindle drive units. These units
must be periodically lubricated (at least every 6 months) via the grease nipples (see Section 3).
During maintenance of our actuators, remove and replace old grease with new one.
Mixing of different lubricant types is NOT permitted.
Quantities needed for lubricant service are listed in Section 3.
Lubricant Recommendation and Requirements
Section 3: Lubricant Recommendation and Requirements
Lubrication Utilization
Definition
(Total engine running time)
Over 1,250 hours/year
Over 500 hours/year
Less than 0.5 hours/year
(Permanent or long-term)
Between -10
Over +50 C
o
Below -25 C
o
(On main shaft of actuator)
Over 80 rpm
(Relative to rated power)
Over 90%
Between 80 to 90%
Reduction Factor (Multiplier)
-
0.5
0.7
0.8
-
C and +50 C 0.5
o o
0.7
0.9
-
0.8
-
0.8
0.9
October 2021
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