Mobil SHC™ 639 synthetic bearing oil helps cement mill reduce operating temperatures and extend oil drain intervals*

Kiln support roller bearings

Cement mill

Karnataka, India

Situation
A cement mill operates three integrated cement lines that include individual kilns with a capacity of 166 tons per hour. Lubricated with an ISO VG 460 mineral oil, the kilns’ support roller bearings experienced frequent breakdowns, leading to unscheduled downtime. Additionally, the oil needed to be replaced every 12 months due to severe contamination and oxidation. In an effort to improve equipment reliability, the company approached ExxonMobil to identify a lubricant solution capable of avoiding equipment breakdowns and extending drain intervals.

Recommendation
ExxonMobil engineers recommended the company switch to Mobil SHC™ 639 synthetic bearing oil, which responds well to antioxidants, thus providing excellent oxidation resistance and sludging. Formulated with a low traction coefficient, Mobil SHC 639 bearing oil is capable of reducing operating temperatures and streamlining energy consumption.

Result
After transitioning to Mobil SHC 639 synthetic bearing oil, the mill experienced a reduction in operating temperatures by 10°C (18°F) and extended oil drain intervals by 2.5 times, generating company-estimated annual savings of US $27,677.

Advancing productivity
By helping you enhance equipment life and reliability – which reduces maintenance costs and downtime – our expert services can help you achieve your Safety, Environmental Care^† and productivity goals. 

*This success story is based on the experience of a single customer. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used.