Research and Development in Tractor Technology
Southwest Research Institute (SwRI) is actively involved in almost every aspect of tractor component, transmission, and hydraulic fluid evaluations. Specialized test fixtures and complete tractor assemblies are used for manufacturers' fluid specifications tests, as well as SAE and ASTM procedures. Typical programs and capabilities include:
SwRI serves leading tractor manufacturers as a designated laboratory for transmission and hydraulic fluids specification testing. Fluid Testing Tractor hydraulic fluids are tested to ensure compliance with performance standards.
The physical and chemical characteristics of these fluids are tested for effects on:
The Institute is recognized as the leading independent laboratory for the qualification of hydraulic and transmission oils. A full range of programs enables petroleum refiners and marketers to qualify their products for use in manufacturers' equipment.
Testing Effects of Tractor Hydraulic Fluids on Gear Wear Protection
As part of its fluid-testing program, SwRI evaluates tractor brake chatter, capacity, and durability in the JDQ-96 1400 test series. For these tests, technicians use a John Deere 4640 tractor with a modified power shift transmission to drive a John Deere 1400 series industrial axle equipped with annular wet disc brakes. The brake chatter test consists of 30,000 brake engagements. After 1,000, 10,000, 20,000, and 30,000 brake engagements, a series of brake chatter tests is performed at different wheel speeds, brake pressures, and brake temperatures.
The JDQ-95 spiral bevel/final drive gear wear test evaluates effectiveness of tractor hydraulic fluids in protecting the spiral bevel gears from scoring and the final drive planetary reduction gears from surface distress and wear. In this 50-hour test, a John Deere engine and power shift transmission drive an industrial axle that houses the test gears. High-torque dynamometers provide the load.
Testing Effects of Tractor Hydraulic Fluids on Wet Clutch Friction
SwRI uses a number of tests to evaluate the effects of hydraulic fluids on tractor clutches. These tests include:
Component and Vehicle Testing
Using sophisticated equipment and industry-recognized procedures, experienced SwRI personnel perform a variety of tests on tractors and their components. Typical tractor test programs include:
In addition to performing tractor test programs, SwRI evaluates all electrical and mechanical vehicle components, systems, and structures according to client-specific and industry standards and specifications. The Institute's integrated testing programs include:
Agricultural and industrial tractors are operated under Institute test programs.
Field tests may involve simultaneous testing of several agricultural tractors, operated in several different climates, to evaluate engine oils, hydraulic oils, and related components. Tractors often accumulate more than 1,000 test hours each in 12 months.
SwRI has 50 years of experience in the automotive and tractor industries. The Institute's tractor-related services are in increasing demand because of the following reasons: