Comp Oil Filter Comparison With Baldwin

8/17/2019 Comp Oil Filter Comparison With Baldwin

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Comparison test : compressor oil filterAtlas Copco Ref.: 1613 6105 00

versus

Baldwin B262

Page : 1/5

Atlas Copco Airpower N.V.

Portable Air Division

After Sales Market Department

1 Dust capacity

Dust Capacity per ISO 4548-12

51,854,9

0

10

20

30

40

50

60

Baldwin B262 Atlas Copco 1613 6105 00

C a p a c i t y [ g r a m

s ] a t 8 0 L / m i n

The dust capacities amount to 54,9 g (Baldwin) and 51,8 g (Atlas Copco).

In conclusion the contaminant holding capacity of the Atlas Copco 1613 6105 00 and theBaldwin B262 are nearly equal.

The higher the cumulative efficiency of an oil filter is, the longer the filter can perform.And the longer the filter lasts, the more running hours the compressor can run without a

filter change.

Atlas Copco offers Top Level Dust Capacity and Service Life


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versus

Baldwin B262

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2 Separation efficiency

Separation Efficiency per ISO 4548-12

0%

10%

20%

30%

40%50%

60%

70%

80%

90%

100%

0 5 10 15 20 25 30 35 40 45 50Particle Diameter [µm]

S e p a r a t i o n E

f f i c i e n c y [ % ]

Atlas Copco 1613 6105 00

Baldwin B262

20 µm Efficiency per ISO 4548-12

69%

55%

0%

10%

20%

30%

40%

50%

60%

70%

Baldwin B262 Atlas Copco 1613 6105 00

E f f i c i e n c y [ % ] a t 8 0 L / m i n

The separation of smaller particles is explicitly worse at the Baldwin filter. For larger

particles (>30µm) it converges to the Atlas Copco filter.

Higher separation efficiency results in cleaner oil because the filter media stops more and

smaller contaminants from passing through.

Atlas Copco offers Higher Separation Efficiency.


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versus

Baldwin B262

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3 Differential pressure

In order to ensure an adequate lubrication, it is customary for the filter to be designed to

pass its full rated flow with no more than a specified differential pressure. The testsspecified in ISO 4548 measure the differential pressure across a complete filter assembly,in a clean condition, over the whole range of oil flow rates. Tests are specified with oils at

two viscosities, one to assess the performance of a filter with cold oil and the other toassess its performance with oil at a typical operating temperature.

Differential pressure at 20°C

0,1

1,0

10,0

10 100 1000

Oil Flow [L/min]

D

i f f e r e n t i a l P r e s s u r e [ b a r ]


Baldwin B262

Differential pressure at 80°C

0,01

0,10

1,00

10,00

10 100 1000

Oil Flow [L/min]

D i f f e r e n t i a l P r e s s u r e [ b a r ]


Baldwin B262

Because of the design of the base plate and hole pattern, the Atlas Copco filter has asignificantly lower differential pressure at lower oil temperatures than the Baldwin filter.


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versus

Baldwin B262

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Atlas Copco oil filters ensure adequate supply of oil at cold start conditions.

4 Bypass valve

The purpose of the by-pass valve of an oil filter is to maintain an adequate supply of oil to

the compressor element when the differential pressure across the filter element is high,even if the oil is not filtered then. Such conditions may occur, for example, when the

compressor is started from cold or in the event of the filter element becoming clogged.

To limit the quantity of unfiltered oil passed to the compressor element, when there is noexcessive differential pressure across the filter, it is customary for the by-pass valve to be

designed not to open below a specified differential pressure.

The opening pressures of the bypass valve are 2,5 bar for the Atlas Copco filter and 2,0 to3,0 bar for the Baldwin filter. This means that the bypass valve of the Baldwin filter openstoo early at lower differential pressures. Therefore oil filtration might be insufficient at

cold start conditions or when the filter surface becomes more and more clogged. Then a permanent oil leakage can occur.

Atlas Copco oil filters ensure sufficient oil filtration and adequate supply of oil at all

operation conditions.

5 Mechanical construction

The two oil filters have nearly the same diameter, lengths and filter surfaces.

The filter medium of the Atlas Copco filter has a significantly higher stability of the bellow

than the Baldwin B262 (5,0 bar vs. 1,8 bar).


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versus

Baldwin B262

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Picture 1 : Baldwin B262 filter.

Picture 2 : Atlas Copco 1613 6105 00

Comp Oil Filter Comparison With Baldwin

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