Aira® 320

Part Number: 52998 -- Aira 320-55, 53001 -- Aira 320-330

Aira® 320 is synthetic industrial gear oil formulated for long life and excellent protection in wind turbine and industrial gear boxes operating under severe conditions. Formulated with extreme-pressure (EP) additives, it provides outstanding resistance to scuffing wear and micro pitting fatigue on gear surfaces operating under extreme pressures and shock loads. Aira 320 provides exceptional thermal stability and oxidation resistance to fulfill the long oil life requirements of gearbox manufacturers, making them ideal for hard-to-reach places where gear oil changes are infrequent.
Aira® 320 is recommended for heavy-duty industrial gear drives, such as steel-on-steel helical, bevel and spur gears with surface-hardened tooth metallurgies.
Aira® 320is fortified with next-generation additive technology to deliver outstanding overall performance in areas critical to industrial applications, including water resistance, filterability, long-term foam control, rapid air release, rust and corrosion inhibition and paint and seal compatibility.
Parameter / Standard / 41992
Characteristic Properties
Viscosity @ 40 °C, cSt / ASTM D445 / 320 cSt
Viscosity @ 100 °C, cSt / ASTM D445 / 37 cSt
Viscosity Index / ASTM D2270 / 165
Are Viscosity Improvers (VI) used? / - / No
Density @ 15 °C, kg/l / ASTM D4052 / 0.89 kg/l
Flash Point, COC, °C / ASTM D92
(DIN EN ISO 2592) / 212 °C
Pour Point, °C / ASTM D97 (DIN ISO 3016) / -39 °C
TAN, mg KOH/g / ASTM D664 / mg KOH/g
Thermal Transport Properties (Cp), kJ/kg*K,
@ 15 °C, 101.325 kPa / - / kJ/kg*K
Gear and Bearing Fatigue and Wear Performance
FZG Scuffing Test A/8.3/90 / DIN 51354 - 1 & 2 / >14
FZG Scuffing Test A/16.6/90 / DIN 51354 - 1 & 2 / >14
Micropitting Resistance ( 60º C) / FVA n°54 I-IV / 10
Micropitting Resistance ( 90º C) / FVA n°54 I-IV / 10
4-Ball Wear, mm
(Mod 1,800 RPM, 20kg, 54º C, 60 Min) / ASTM D4172 / 0.26 mm
4-Ball Weld, kg / ASTM D2783 / 315 kg
FAG FE 8 (80h), mw50 & mk50 / DIN 51819-B-7.5/80kN-80°C / Roller = 3.15 mg
Cage = 48 mg

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Parameter / Standard / 41992
Gearbox Peripherals
Water Separability @ 82 º C & 52 º C / ASTM D1401 / min @ 52C
20 min @ 82C
Foam, Seq I, ml/ml / ASTM D892 / 0/0 ml/ml
Foam, Seq II, ml/ml / ASTM D892 / 10/0 ml/ml
Foam, Seq III, ml/ml / ASTM D892 / 0/0 ml/ml
Foam @ 0,20,40,60 °C / Flender Foam / 15.5, 12, 6, 2.5%
Air Separation @ 75 °C / ASTM D3427 / 10 min
Copper Corrosion (3 hr, 121 °C) / ASTM D130 or ISO 2160 / 1a
Steel Corrosion / ISO 7120 / Pass
Rust Protection / ASTM D665, Sea Water / Pass
Filterability (Inline) / Hydac / Pass
Filterability (Kidney Loop) / CC Jensen
Particles / ISO 4406/99 / 17/14/10
Gearbox Specific Compatibility
Static Seal Test (NBR, FKM) Freudenberg / DIN 53521 / Pass
Dynamic Seal Test (NBR, FKM) / DIN 3761 / Borderline/Pass
Paints Compatibility: Interior / Confer with GBX OEM
Paints Compatibility: Exterior / Confer with GBX OEM
Sealants Compatibility:
Loctite, Sealing Compound, Solid Matter Sealing, etc / Confer with GBX OEM / Pass
Compatibility with In-Service Gear Oil / ASTM D7155 (Tier 1) / Incompatible above % Residual
ASTM D5185 / % Reduction in Additive X
Flender Foam @ 10% Resid / %
Gearbox Approvals / - / Winergy, Moventas
Other
Longevity / Estimated from Oil Analysis / 3-5 Years

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