Servo Steel 521 is a premium-quality bearing oil developed to meet the stringent lubrication requirements of modern Morgoil bearing systems used in steel mills. Blended from high-viscosity index base oils and fortified with advanced oxidation inhibitors and rust preventives, this oil ensures outstanding thermal stability, extended service life, and reliable protection under severe load and temperature conditions. Formulated for superior performance, Servo Steel 521 offers excellent film strength and load-carrying ability, minimizing metal-to-metal contact and reducing wear in roll-neck bearings. Its exceptional oxidation stability prevents sludge and deposit formation, maintaining system cleanliness and extending lubricant life. The oil’s excellent demulsibility enables quick water separation, preventing rust and corrosion in wet mill environments and ensuring uninterrupted operation even in moisture-prone systems. With a kinematic viscosity of 500–550 cSt at 40°C and a flash point of 240°C (COC min), Servo Steel 521 provides a strong, stable lubricating film that withstands high pressures and temperatures typically encountered in steel manufacturing processes. Its superior thermal and oxidative stability ensures long, trouble-free performance in both continuous and intermittent operations. Designed to fully comply with the Morgan Construction Company (U.S.A.) specifications and IPSS: 1-09-001-81, Servo Steel 521 is recommended for use in Morgoil roll-neck bearings, hydraulic systems, and circulation lubrication systems of steel mills and heavy machinery. By providing dependable lubrication, excellent oxidation resistance, and superior water-separating characteristics, Servo Steel 521 enhances bearing performance, reduces maintenance downtime, and ensures efficient operation of steel mill equipment. It stands as a trusted choice for industries demanding durable, high-viscosity bearing oils capable of withstanding extreme operating conditions.
| Kinematic Viscosity cSt @ 40°C | 500-550 |
| Flash point (COC), °C Min. | 280 |
| Viscosity Index, Min. | 90 |