"Yet again, we have proven that our biodegradable products such as PANOLIN HLP SYNTH 32 also meet the highest industry requirements", says Patrick Lämmle, Chairman of the Board of Directors of PANOLIN International. "The Bosch Rexroth test results were excellent, the rigorous requirements of the RDE 90235 were met without a doubt", comments Lämmle.
"PANOLIN HLP SYNTH is the first rapidly biodegradable hydraulic oil to obtain the Fluid Rating (ISO 15380 in combination with RFT-APU-CL test)", explains Lämmle. "HLP SYNTH 32 has proven its worldwide prominent position amongst eco-friendly hydraulic oils". HLP SYNTH was the first hydraulic oil to obtain the 'Blue Angel' environmental award around 20 years ago and has already been approved by numerous manufacturers. Its inclusion in the Bosch Rexroth list means that HLP SYNTH now also bears the label of what is currently the most rigorous OEM test on the market. Recent years have seen a sharp increase in the requirements to be met by hydraulic oils. Growing power density – the result of higher working pressures, motor speeds, oil circulation cycles and temperatures – has driven the development of hydraulic systems forward in past years, imposing more demanding requirements on the hydraulic liquids used in these systems. These liquids have a decisive impact on the friction characteristics of the hydraulic components, amongst other things.
The ongoing technical development of high-performance hydraulic systems and suitability of new hydraulic media and additives are only partially reflected in the tests used to date. Whereas in the 1970s, specific power density was approx. 4 to 5 KW/kg pump weight, that figure, at over 8 KW/kg, had almost doubled by 2010. Today's hydraulic fluids must be carefully engineered to cope with these developments, i.e. smaller pump units with a higher output and a range of other efficiency-improving modifications to the hydraulic system.
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