Mobil DTE 10 Excel 68 helps Schwing Stetter improve hydraulic efficiency by 3.8%; leads to annual savings of USD1,017 (INR 60,003)


Rupinder Paintal, General Manager-Industrial, ExxonMobil Lubricants Pvt. Ltd

 Hydraulic machines power  moving parts of many kinds of industrial machines by applying the force of a fluid under pressure. Some systems are small, simple and straight forward; while others can be rather large, high pressure systems with a complex array of servo valves and pumps. Notwithstanding the size or complexity of such hydraulics, proper maintenance of both the system and the hydraulic oil is crucial in maximizing uptime and reducing repair costs. An example of the same was demonstrated when Mobil DTE 10 Excel 68 was used in place of a competitor’s Hydraulic ISO VG 68.

Schwing Stetter is the world’s leading equipment builder (EB) for various kinds of construction equipment. The EB’s India plant based in Chennai, Tamil Nadu, manufactures concrete pumps and transit mixers. Schwing Stetter’s core priority is aimed at ensuring safety and health of its employees and mitigating risks towards environmental impact. The company is keen on the concept of energy efficiency so as to reduce its carbon footprint and support the cause of sustainability.

The equipment under surveillance was a hydraulic pump that delivered 50 bar pressure for pumping the concrete and 100 bar for valve for change over (suction/discharge). The pump received a load of approximately 40% of its cycle time. For the remaining time, the pump ran idle. (The fuel tank was independent for the pump).

ExxonMobil Equipment Builder (EB) team and Field Engineering Services (FES) team recommended Schwing Stetter the use of Mobil DTE 10 Excel 68 – a high viscosity index and high shear stable hydraulic fluid with lower traction co-efficient benefits. Energy efficiency demonstration of Mobil DTE 10 Excel 68 was performed on their regular test bed concrete pump in a controlled environment. Fuel consumption was accurately measured and documented as a measure of energy efficiency.

On rigorous testing of the concrete pump, it was observed that Mobil DTE 10 Excel 68 consumed 3.8%less fuel as compared to incumbent competitive hydraulic fluid, thereby saving USD1,017 (INR 60,003) for each concrete pump made by Schwing Stetter for the end customer.

The case study appeared in the December issue of Iron and Steel Review