Description
Castrol Magna™ CTX 88 – High-Quality Circulating Oil
Description: Castrol Magna™ CTX 88 is a circulating oil formulated from high-quality base oils and performance-enhancing additives. The Magna CTX range features high film strength, anti-rust, anti-wear, anti-scuffing, anti-oxidation, and excellent water separation properties.
Application: Magna CTX circulating oil is designed for use in MORGOIL™ bearing systems of roll-neck bearings manufactured by Primetal (Morgan Construction Company), Danieli, SMS Demag, and others. This oil meets or exceeds the standards:
- Primetal standard (formerly Morgan Construction Company), revision 1.1 (27/01/2005)
- Danieli standard N. 0.000.001 – revision 15
- SMS X-Roll® bearing lubrication standard SN 180-3 (April 2016)
Magna CTX 100 is recommended for high-speed no-twist rod mills with a circulating lubrication system. In no-twist rod mills using two lubrication systems, higher viscosity oil is used for low-speed roughing stands and lower viscosity oil is used for high-speed finishing stands. The high viscosity oils in this range are also suitable for lubricating paper machines due to their excellent thermal/oxidation stability, anti-rust properties, water separation, and anti-wear/scuffing performance. In this application, the oil will lubricate gears and bearings for most lubrication points, including dryer section bearings. Magna CTX is also suitable for bearing lubrication systems in primary mills and smaller mills.
Advantages:
- High viscosity index.
- Oxidation stability, extending oil life.
- Excellent hydrolytic stability in the presence of water contamination.
- Good filtration properties under water contamination.
- Excellent water separation.
- Good anti-rust properties and low copper corrosion tendency.
- High film strength and excellent anti-wear performance to protect bearings and prevent scuffing of gears under severe load conditions.
- Low carbon deposit formation, minimizing bearing deposits and maintaining oil cleanliness under severe operating conditions.
- Effective filtration with all types of filters, including clay core filters.
Typical Characteristics:
| Property | Method | Unit | CTX 100 | CTX 150 | CTX 220 | CTX 320 | CTX 460 | CTX 680 |
|---|---|---|---|---|---|---|---|---|
| ISO Viscosity Grade | 100 | 150 | 220 | 320 | 460 | 680 | ||
| Specific Gravity @ 15°C | ISO 12185 / ASTM D4052 | kg/m³ | 888 | 890 | 898 | 903 | 900 | 900 |
| Kinematic Viscosity @ 40°C | ISO 3104 / ASTM D445 | mm²/s | 100 | 150 | 220 | 320 | 460 | 680 |
| Kinematic Viscosity @ 100°C | ISO 3104 / ASTM D445 | mm²/s | 11.3 | 14.6 | 19.2 | 24.6 | 31.2 | 38.6 |
| Viscosity Index | ISO 2909 / ASTM D2270 | 98 | >95 | >95 | 96 | 96 | >90 | |
| Pour Point | ISO 3016 / ASTM D97 | °C | -21 | -18 | -18 | -15 | -12 | -9 |
| Flash Point – Open Cup | ISO 2592 / ASTM D92 | °C | 240 | 240 | 240 | 250 | 250 | 260 |
| Flash Point – Closed Cup | ISO 2719 / ASTM D93 | °C | 220 | 220 | 220 | 226 | 226 | 230 |
| Foam Sequence I | ISO 6247 / ASTM D892 | ml/ml | 10/0 | 10/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| Foam Sequence II | ISO 6247 / ASTM D892 | ml/ml | 35/0 | 30/0 | 0/0 | 25/0 | 10/0 | 20/0 |
| Foam Sequence III | ISO 6247 / ASTM D892 | ml/ml | 0/0 | 30/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| Water Separation @ 82°C (40/37/3) | ISO 6614 / ASTM D1401 | minutes | 10 | 10 | 10 | 10 | 15 | 15 |
| Rust Test (24 hours, distilled water) | ISO 7120 / ASTM D665A | Rating | Pass | Pass | Pass | Pass | Pass | Pass |
| Rust Test (24 hours, synthetic seawater) | ISO 7120 / ASTM D665B | Rating | Pass | Pass | Pass | Pass | Pass | Pass |
| Copper Corrosion – 3 hrs @ 100°C | ISO 2160 / ASTM D130 | Rating | 1a | 1a | 1a | 1a | 1a | 1a |
| RPVOT Oxidation | ASTM D2272 / IP 229 | minutes | 330 | 348 | 311 | 286 | 261 | – |
| Four Ball Weld Load / Wear Index | ASTM D2783 | kgf | 160 / 39.6 | 160 / 32.6 | 160 / 40.4 | 160 / 40.8 | 160 / 40.3 | 160 / 40.5 |
| Four Ball Weld Load – Scar Diameter (15 or 40 kgf / 75°C / 1200 rpm / 1 hr) | ASTM D4172 | mm | 0.38 | 0.39 | 0.44 | 0.45 | 0.47 | 0.44 |
| FZG Scuffing Test – A/8.3/90 | ISO 14635-1 | Failure Load Stage | >12 | >12 | >12 | >12 | >12 | >12 |
