Castrol Optigear Synthetic X 320 WTO
01736 757002VISCOSITY - ISO 320
Synthetic Gear Oil
Castrol Optigear™ Synthetic X 320 WTO is based on synthetic hydrocarbons and a special plastic deformation (PD) and
surface improvement additive package. The additive package, when activated by high specific loads and corresponding
temperatures, helps to equalize surface roughness without creating abrasion leading to the surface improvement
(plastic deformation).
Optigear Synthetic X 320 WTO is a CLP-HC gear oil (according to DIN 51502) and exceeds the minimum requirements
according to DIN 51517 (2003), part 3, CLP gear oils.
Optigear Synthetic X 320 WTO may be used in spur gear, bevel gears or planetary gear units and in heavy loaded gear
units, e.g. wind turbine main gears. It is also suitable for the lubrication of oil-lubricated rolling bearings.
Depending on the specific application, Optigear Synthetic X may be used in an operating temperature range from -35 °C
to +95 °C.
- High load carrying capacity.
- Superior micro pitting protection.
- Excellent friction reduction.
- Good filtration properties.
- Excellent bearing lubrication suitability.
| Name | Method | Units | Optigear Synthetic X 320 WTO |
| ISO Viscosity Grade
| – | – | 320 |
| Density @ 15°C / 59°F ISO 12185 /
| ASTM D4052 | kg/m³ | 850 |
| Kinematic Viscosity @ 40°C / 104°F ISO 3104 /
| ASTM D445 | mm²/s | 325 |
| Kinematic Viscosity @ 100°C / 212°F
| ISO 3104 / ASTM D445 | mm²/s | 40.8 |
| Viscosity Index
| ISO 2909 / ASTM D2270 | – | 179 |
| Flash Point – open cup method
| ISO 2592 / ASTM D92 | °C/°F | >250/482 |
| Pour Point | ISO 3016 / ASTM D97 | °C/°F | -45/-49 |
| Rust test – distilled water (24 hrs)
| ISO 7120 / ASTM D665A | – | Pass |
| Copper corrosion (3 hrs@100°C/212°F)
| ISO 2160 / ASTM D130 | Rating | 1 |
| FE-8 Bearing Wear test increased load (F.562831.01-7.5/100-80)
| DIN 51819-3 (modified) | roller wear (Mw50), mg | <5 |
| FE-8 Bearing Fatigue test (F.562831-75/100-70 800 hrs)
| DIN 51819-3 (modified) | roller wear (Mw50), mg | <5 |
| FZG Gear Scuffing test – A/8.3/90
| ISO 14635-1 | Failure Load Stage | >14 |
| FZG Micropitting test @ 60°C/140°F | FVA 54-7 | Failure Load Stage Micropitting Rating
| =10 High
|
| FZG Micropitting test @ 90°C/194°F | FVA 54-7 | Failure Load Stage Micropitting Rating
| >10 High
|
| Foam Sequence I – tendency / stability | ISO 6247 / ASTM D892 | ml/ml | <100/10 |
Optigear Synthetic X gear oil can be applied by an oil can, oil cup reservoir, splash, spray mist or by automatic
dispensing equipment and central or circulation systems.
It is compatible with mineral oils and esters. This means that traces up to 3% of previous oil in the gear case after
draining will not pose any problems.
However, the beneficial effects of the special PD additives are reduced when mixed with other gear oils.
Tto achieve an optimum Lifetime of your elastomer seals we recommend the use of Viton (FKM) based materials.
