Development of High Performance Transmission/Hydraulic Fluid (KUBOTA Super-UDT) Establishing the Specification and New Test Method 972788

An agricultural tractor is a machine that performs many operations, such as land preparation, cultivation, towing and PTO operation, to name a few. In Japan it must operate in a wide variety of agricultural applications, such as paddy farming, upland farming, fruit farming and dairy farming, and in all kinds of weather. The recent trend has been toward higher-powered tractors to increase working efficiency, and automated transmission and hydro-electronic controlled mechanisms to promote improved operability, comfort and other amenities. With a dramatic advance of such technology, it was of urgent necessity to improve even more the low-temperature fluidity, friction characteristics and extreme-pressure performance of the lubricating oil. In recent years, as the environmental pollution problem arises, there is an increasing need for biodegradable lubricating oil.

Tractor lubricating oil is a multipurpose oil that performs duties such as hydraulic control that operate the three-point link mechanism, hydrostatic transmission (HST), power shift transmission including gears, bearings and wet clutch, power steering, and wet disc