Development of a High Performance Biodegradable Hydraulic Oil for Construction Equipment

971632

05/01/1997

Event
International Spring Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
We have found that most commercially available biodegradable hydraulic oils show low static friction coefficients not depending on the kinds of wet friction materials. Since hydraulic motors of a hydraulic excavator contain wet parking brakes, the most commercially available biodegradable hydraulic oils can not provide enough brake torque capacity to park safely. Furthermore, all kinds of commercially available biodegradable hydraulic oils do not have adequate oil performance for a hydraulic system of construction eq ipment. Thus we have developed a n high performance biodegradable hydraulic oil. To obtain a high static friction coefficient and compatibility with elastomers, a new synthetic ester base fluid has been developed. To improve oxidation stability and to attain compatibility with mineral oil based hydraulic oils,. an additive formulation has also been developed. After evaluating friction characteristics and oxidation stability, we selected the best candidate oil and conducted a high pressure axial piston pump bench test. Furthermore, we confirmed biodegradability and toxicity of this candidate oil.
Meta TagsDetails
DOI
https://doi.org/10.4271/971632
Pages
14
Citation
Konishi, A., Ohkawa, S., Nanba, M., Nakamoto, N. et al., "Development of a High Performance Biodegradable Hydraulic Oil for Construction Equipment," SAE Technical Paper 971632, 1997, https://doi.org/10.4271/971632.
Additional Details
Publisher
Published
May 1, 1997
Product Code
971632
Content Type
Technical Paper
Language
English