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| AR Services and Capabilities > Automatic Transmission Fluid Testing > FZG Gear Testing |
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FZG Gear Testing |
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The FZG test rig is designed to evaluate a fluid's lubricating and wear protection properties at the interface of a loaded set of gears. The gears are loaded through a torsional coupling that is set to known load conditions, or stages. The gears are rotated by a variable speed electric motor. Fluid temperature is controlled by heating and/or cooling elements.
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FZG Gear Wear (ASTM D5182)
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Evaluates gear tooth face scuffing resistance of fluids using A profile gears. The rig is operated at 1450 rpm through up to 12 progressive load stages at 15 minute intervals. Standard tests are run at a fluid temperature of 90oC, though the MERCONŽ-V/SP test is run at 150oC. Gear teeth are inspected after each load stage for scuffing. In addition to a visual evaluation of gear tooth condition, gear weight loss is measured.
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FZG Gear Wear (ASTM D4998)
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Evaluates gear tooth face wear resistance of fluids using A profile gears. The rig is operated at 100 rpm under constant load for 20 hours. Along with a visual tooth surface rating, gear weight loss is measured.
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FZG Pitting - Type C Gears
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Evaluates gear pitting resistance of fluids using C profile gears. Tests are run up to 300 hours under constant load, temperature, and speed. Inspections are conducted at predetermined intervals for pitting damage on the gear tooth faces.
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FZG A10/16.6R/120
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A more severe version of the ASTM D5182 Load Stage Wear test. This test requires A10 gears (half the tooth width of the A gears), and is run at 2880 rpm in reverse mode.
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In addition to standardized tests, Automotive Research has extensive experience with customized FZG tests. Gear type, fluid temperature, gear load, and rotation speed can all be controlled to client defined settings.
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Americas:
- Toll Free USA: 1 888 400 0084
- All Others: +01 281 971 5600
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| Europe: +44 1708.680.248 |
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Intertek AR is located at:
5404 Bandera Road
San Antonio, Texas
78238-1993 USA
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