DN 22 OSCILLATING MOTION JOURNAL BEARING FRICTION & WEAR TEST RIG





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    Description

    The DN 22 is a bearing test rig for either plain or spherical journal bearings under high load and
    oscillating motion. A servo hydraulic ram provides quasi static (low cycle) controlled loading and
    oscillatory motion is provided by a semi-rotary servo hydraulic actuator, providing 180 degrees
    of rotation.
    Displacement is controlled automatically, providing either continuous motion over a given stroke
    or movement to a selected position, followed by a pause, followed by either continuing motion in
    the same direction or movement in the opposite direction.

    The torque is measured by means of in-line torque transducers and wear is measured by LVDT.
    Encoders are provided for measuring rotational position and speed.
    The installation includes a power module and servo hydraulic power pack.

    Control and Data Acquisition

    Control and data acquisition are implemented via host PC running COMPEND 2020 Windows compatible software, in conjunction with a Phoenix Tribology USB micro-controller interface. Automatic control is implemented via user programmable test sequences. Manual control is implemented using on screen toggles. Data is stored to hard disc in either .csv or .tsv file formats.

     

  • Technical Specifications

    Maximum load: 120 kN
    Maximum Oscillating Frequency: 1 Hz
    Maximum Amplitude: +/-90 degrees
    Maximum Static Torque: 1,600 Nm
    Maximum Dynamic Torque: 1,000 Nm
    Loading: Servo hydraulic ram
    Load Profile: Quasi static (low cycle) control
    Load Feedback: Force transducer
    Motion: Semi-rotary hydraulic actuator with in-line torque transducer
    Motion Profile: Continuous oscillating motion or intermittent motion under positional control
    Wear measurement: LVDT
    Specimens: Plain bearings bore from 16 mm I/D to 80 mm I/D
    Interface: Serial Link Interface Module
    Software: COMPEND 2000
    Controlled Parameters Speed
    Position
    Load
    Test Duration
    Measured Parameters Speed
    Load
    Specimen Temperature
    Friction Torque
    Wear
    Test Duration
    Services
    Electricity: 220/240V, single phase, 50 Hz, 7.5 kW
    110/120 V, single phase, 60 Hz, 7.5 kW

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