D1478 Low Temperature Torque Tester

Low-temperature torque of ball bearing grease according to industrial standards

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  1. General Details

    This test method covers the determination of the extent to which a grease retards the rotation of a slow-speed ball bearing by measuring starting and running torques at low temperatures, below -20°C (0°F).

    ASTM D4693 – Low-temperature Torque of Grease Lubricated Wheel Bearings.

    This test method determines the extent to which a test grease retards the rotation of a specially-manufactured, spring-loaded, automotive-type wheel bearing assembly when subjected to low temperatures. Torque values, calculated from restraining-force determinations, are a measure of the viscous resistance of the grease. This test method was developed with greases giving torques of less than 35 N·m at 40°C.

    ASTM D4950 – Classification and Specification of Automotive Service Greases.

    This specification covers lubricating greases suitable for the periodic relubrication of chassis systems and wheel bearings of passenger cars, trucks, and other vehicles.

    • Steel structure painted with epoxy material
    • Test cabin able to grant a working temperature of –75 °C
    • Geared motor and Ball-cage rotating at 1 rpm
    • Inspection door made in stainless steel with high insulation material
    • Internal double cabin made in stainless steel with high diffusion and homogeneity cooling system
    • Double stage refrigerating unit without CFC gases located in the bottom part of the structure
    • Digital dynamometer
    • Set for analysis available in accessories list
    • Managed by a touch screen panel pc using LabLink operating software running on Windows basis with following characteristic:
      • TFT/LCD 12”
      • 40 Gb HD
      • 1024 × 768 resolution and 16 M colors
      • 2 × USB ports
      • Able to store more than 60’000 analysis
    • Power cable and user manual
    • Power supply available 220 Vac 50/60 Hz or 115 Vac 50/60 Hz to be specified in case of PO
  2. Standards
    • ASTM D1478
    • ASTM D4693
    • ASTM D4950
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