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Castrol Alphasyn GS 220
Synthetic Gear Oils
Appliciation Castrol Alphasyn GS 220
The Alphasyn GS range has inherently superior properties relative to mineral lubricants, therefore these grades are especially suitable for the high temperature lubrication of gears and bearings,particularly in large scale mills and calenders. In worm gears operating with mineral oil at low speeds and high torques, conditions of boundary lubrication tend to promote pitting and consequent rapid wear of bronze worm-wheels. Fatty oils (also known as compounded oils) were found to be effective in reducing pitting, but suffered from rapid oxidation at high running temperatures. Alphasyn GS grades are suitable for these applications and also allow extended drain and change intervals. Some manufacturers employ them for fill-for-life lubricants.
Performance, Features & Benefits of Castrol Alphasyn GS 220 are:
- Reduced frictional losses leads to reduced energy consumption and lower sump temperatures
- Higher thermal stability, hence minimal formation of sludge and deposits.
- Better load-carrying properties and reduced wear compared with conventional mineral oils.
- Inherently higher Viscosity Index (VI) which, with the lower pour point, results in a wider range of service temperatures (-30 °C to 150 °C continuous bulk temperatures, with intermittent operating temperatures of up to 220°C)
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Product Description Castrol Alphasyn GS 220
Castrol Alphasyn™ GS are fully synthetic gear lubricants based on carefully selected polyglycol fluids and containing antioxidant, rust-inhibiting and EP additives of high thermal stability.
Typical Characteristics
| Eigenschappen | Methode | Castrol Alphasyn GS 220 | ||
| Appearance | - | - | Visual | Clear |
| Density | 15°C/59°F | kg/m³ | ISO 12185/ ASTM D4052 |
1020 |
| Kinematic Viscosity | 40°C/104°F | mm²/s | ISO 3104/ ASTM D445 |
223 |
| Kinematic Viscosity | 100°C/212°F | mm²/s | ISO 3104/ ASTM D445 |
36.3 |
| Viscosity Index | - | - | ISO 2909/ ASTM 2270 |
213 |
| Pour Point | - | °C/°F | ISO 3016/ ASTM D97 |
-45/-49 |
| Flash Point - open cup method | - | °C/°F | ISO 2592/ ASTM D92 |
280/ 536 |
| Rust test - distilled water (24 hrs) |
- | - | ISO 7120/ ASTM D665A |
Pass |
| Copper Corrosion | - | Rating | ISO 2160/ ASTM D130 |
1a |
| Timken OK Load test | - | kg/lb | ASTM D2782 | 34/75 |
| Four Ball - Weld scar diameter (1hr/40kg) |
- | mm | ASTM D2783 | 0.40 |
| FZG Gear Scuffing test - A/8.3/90 | - | Failure Load Stage |
ISO 14635-1 | >12 |
| FZG Gear Scuffing test - A/16.6/ 90 |
- | Failure Load Stage |
ISO 14635-1 (modified) |
>12 |
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