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Lube Additives for Circulating Oils
Overview:
Large circulating systems (paper machines, turbines, bearings) demand long-life oxidation stability, rapid air release, and water shedding to sustain film thickness and cleanliness.
Why an additive package is required:
- Prevent oxidation/varnish that fouls narrow clearances and controls.
- Ensure rapid air release and low foaming to avoid cavitation and film collapse.
- Provide rust protection and excellent demulsibility for reliability under water ingress.
Typical additive families employed:
Antioxidants, rust inhibitors, demulsifiers, anti-foam; metal deactivators where copper alloys are present.
Indicative performance tests:
TOST (ASTM D943), RPVOT (ASTM D2272), air release (ASTM D3427), foam (ASTM D892), demulsibility (ASTM D1401), rust (ASTM D665).
Recommended PX Products
|
Product
|
Function
|
Dosage
|
|---|---|---|
|
PX 3239
|
Copper Deactivator
|
0.02 – 0.05
|
|
PX 3827
|
Silver Deactivator
|
0.02 – 0.05
|
|
PX 3806
|
Premium antioxidant
|
0.05 – 1.0
|
|
PX 3807
|
Premium antioxidant
|
0.05 – 1.0
|
|
PX 3863
|
Corrosion Passivator
|
0.25 – 1.0
|
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