Selection of oil for various loader accessories:
? select hydraulic transmission oil.
?? the normal working temperature of hydraulic transmission oil is between 82 ~ 95 ℃, sometimes up to about 120 ℃. Due to the special requirements for hydraulic transmission oil, there is no national standard to specify its quality grade and viscosity requirements. General loaders use No. 6 hydraulic transmission oil and No. 8 hydraulic transmission oil.
??GB7631. 7 ~ 95 are divided into cldcle with reference to API quality grade, in which CLE is equivalent to GL ~ 5 in APL classification. CLE grade is recommended for general loader drive axle gear oil.
?? grease
?? a multipurpose oil used abroad contains 1% □ 5% molybdenum disulfide, which is also a suitable corrosion inhibitor. The oil is suitable for various hinge pins, joint bearings, swing frame bearings, transmission shafts, etc. The oil must be a mixture of high-grade lithium and E.P. additives. In the whole working range, it has the characteristics of stable chemical properties, no hardening, no leakage or dripping. Nlgi grease No. 1 or No. 2 specified by the American grease association is generally used in occasions with wide temperature range and low temperature.
? hydraulic oil
?? viscosity is an important performance index of hydraulic oil, because the lower the viscosity, the smaller the power loss and the higher the mechanical efficiency; The viscosity is low and the volume efficiency is reduced. Therefore, the good viscosity meets the requirements of small wear of bearings and hydraulic pumps, and the low-temperature performance is considered. Domestic hydraulic oil is generally gb1118 Mineral oil type and synthetic hydrocarbon type hydraulic oil specified in 1 □ 94. Due to poor working conditions, heavy working load and high hydraulic oil temperature of the loader, high-grade wear-resistant hydraulic oils L □ hm32 and l □ HM46 are generally used, and low pour point hydraulic oils L □ hv32 and l □ HV46 are recommended under low temperature conditions.
