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Lube Additives for Hydraulic Fluids
Overview:
Hydraulic systems depend on precise valve clearances and pump protection; varnish, aeration, and wear rapidly degrade control accuracy and efficiency.
Why an additive package is required:
- Provide AW protection (vane/piston/gear pumps) and reduce wear in boundary contacts.
- Inhibit oxidation and varnish to maintain servo-valve responsiveness.
- Control foam and air release; ensure water separation and filterability.
Typical additive families employed:
AW packages (zinc or ashless), antioxidants, anti-foam, rust inhibitors, demulsifiers, metal deactivators; cleanliness/varnish-control additives as needed.
Indicative performance tests:
Vane pump wear (ASTM D2882), oxidation life (TOST ASTM D943), foam (ASTM D892), air release (ASTM D3427), demulsibility (ASTM D1401), filterability (ISO 13357), 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 3843
|
Demulsifier & Defoamant
|
0.05 – 0.30
|
|
PX 4005
|
Dispersant
|
1.0 – 3.0
|
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