20
EATON
Duraforce HMR Conversion Procedures Manual E-MOPI-TM005-E July 2012
Operational Parameters
Lifetime Recommendations
Eaton high pressure units are designed for excellent
reliability and long service life. The actual service life of a
hydraulic unit is determined by numerous factors. It can be
extended significantly through proper maintenance of the
hydraulic system and by using high-quality hydraulic fluid.
Beneficial Conditions For Long Service Life
Speed
Lower continuous maximum speed
Operating Pressure
Less than 300 bar Δp on average
Maximum Pressure
Only at reduced displacement
Viscosity
15 ... 30 cSt
Power
Continuous power or lower
Purity of Fluid
18/16/13 in accordance with ISO 4406 or better
Adverse Factors Affecting Service Life
Speed
Between continuous maximum speed and intermittent
maximum speed
Operating Pressure
More than 300 bar Δp on average
Viscosity
Less than 10 cSt
Power
Continuous operation close to maximum power
Purity of Fluid
Lower than 18/ 16/ 13 in accordance with ISO 4406
Filtration
For Reliable Proper Function and Long Service Life
18/16/13 in accordance with ISO 4406 or better
Minimum Requirements
20/18/15 in accordance with ISO 4406
Commissioning
The minimum purity requirement for the hydraulic oil is based on the most sensitive
system component. For commissioning we recommend a filtration in order to achieve
the required purity.
Filing in Operation of Hydraulic Systems
The required purity of the hydraulic oil must be ensured during filling or topping up.
When
drums, canisters or large-capacity tanks are used the oil generally has to be filtered.
We recommend the implementation of suitable measures (e.g. filters) to ensure that
the required minimum purity of the oil is also achieved during operation
International Standard
Code number according to ISO 4406 purity class according to
SAE AS 4059
18/16/13
corresponds to
8A/7B/7C
20/18/15
9A/8B/8C
Operational parameters.
Filtration
In order to guarantee
long-term proper function
and high efficiency of
the hydraulic pumps the
cleanliness level of the
lubricant must comply
with the following
criteria according to
Eaton Hydraulic Fluid
Recommendation 03-401-
2010. Maintaining the
recommended cleanliness
level can extend the
service life of the hydraulic
system significantly.
For reliable proper function and long service life
18/16/13 in accordance with ISO 4406 or better
Commissioning
The minimum cleanliness level requirement for the
hydraulic oil is based on the most sensitive component.
For commissioning we recommend a filtration in order to
achieve the required cleanliness level.
Filling and operation of hydraulic systems
The required cleanliness level of the hydraulic oil
must be ensured during filling or topping up. When
drums, canisters, or large-capacity tanks are used the
oil generally has to be filtered. We recommend the
implementation of suitable filters to ensure that the
required cleanliness level of the oil is achieved and
maintained during operation.
International standard
Code number according to ISO 4406
18/16/13
