Construction on blue sky

An Industry at Maximum Load – Perfect Conditions for DYNAVIS®

Applications

Construction machinery is often pushed to its limits. Since 2005, Evonik has tested hundreds of hydraulic fluids, varying viscosity index and shear stability, in a range of mobile construction equipment.

Proving the superiority of DYNAVIS has been evident, both in a controlled environment and on-site at real working construction sites. In every climate zone in the world - from temperatures below freezing, to scorching heat - multiple operating shifts, any machine operator, and excavators of all sizes and conditions, DYNAVIS  formulated hydraulic fluids guarantee maximum productivity, significant fuel savings, and reliable, sustained  performance

WHEN THE ‘HEAT IS ON’, CONVENTIONAL FLUIDS LOSE THEIR ‘PUNCH’

High temperatures "thin out" hydraulic fluid's viscosity, leaving the vanes or  pistons of the hydraulic pump unable to push an adequate amount of fluid. The fluid recirculates, creating  what's known as "internal leakage".

The more fluid that recirculates, the higher the temperatures become within the system because of the  additional frictional heat that's created. This leads to a downward spiral in performance which causes the equipment operator to "step on the gas pedal" to maintain performance. Stress increases for hydraulic system components such as pumps, hoses, and seals – resulting in reduced service life.

Using more fuel to do the same amount of work is inefficient and expensive, but DYNAVIS technology  results in lower oil temperatures and sustained pump efficiency.

LONG TERM PERFORMANCE DEMONSTRATIONS

More than 1,500 runs and 19 different fluid formulations were evaluated in a long-term performance demonstration at our rock quarry test site in Germany. The tests proved the superiority of DYNAVIS® formulated fluids versus monograde and non-shear stable high viscosity index fluids.

Case study