900-444, Fully Automatic Twin Rockwell Hardness Tester


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  • Fully Automatic Twin Rockwell Hardness Tester

    Model No. 900-444

    Fully automatic twin Rockwell hardness tester with closed-loop load cell control, automated Z-axis, built-in micro-printer, and USB data export. Tests all standard Rockwell and Superficial Rockwell scales.

    Model No. 900-444

    Features: *shown w/optional large anvil

    • The test force is applied via a closed-loop control unit with a load cell, a DC motor and an electronic measurement and control unit replace traditional dead weights. The result is highly accurate measurements at all test loads up to 0.5%.
    • Simple plug-and-play tech allows for much more quick and easy installation than traditional dead weight type machines.
    • Automated Z-Axis. Just press START key once, entire test process will be finished automatically — regardless of the size of the sample, the position of the sample, the distance between the indenter and sample surface. The sample will be auto-lifted to approach the indenter and finish testing automatically.
    • Higher precision than handle wheel lifting/dead weight type machines which can be affected by user interaction.
    • Extended dolphin nose allows vertical test height of 11.8″ and throat depth of 8.6″.
    • Built-in micro-printer.

    SPECIFICATIONS: Model No. 900-444

    Minor Load 3kgf (Superficial Rockwell)   10kgf (Regular Rockwell)
    Major Load 60kgf (588N)   100kgf (980N)   150kgf (1471N)
    15kgf (147.1N)   30kgf (294.2N)   45kgf (441.3N)
    Hardness Scales Rockwell: HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HRL, HRM, HRR, HRP, HRS, HRV
    Superficial Rockwell: 15N, 15T, 15W, 15X, 15Y, 30N, 30T, 30W, 30X, 30Y, 45N, 45T, 45W, 45X, 45Y
    Rockwell Test Range Rockwell: HRA:20-88, HRB:20-100, HRC:20-70, HRD:40-77, HRE:70-100, HRF:60-100, HRG:30-94, HRH:80-100, HRK:40-100, HRL:100-120, HRM:85-115, HRR:114-125
    Superficial Rockwell: HR15N:70-94   HR30N:42-86   HR45N:20-77
    HR15T:67-93   HR30T:29-82   HR45T:1-72
    Dwell Time 0-99s (Adjustable)
    Hardness Value Resolution 0.1HR
    Display LCD display
    Data Storage Measured values saved in Excel format on a USB drive
    Conversion Scales Brinell and Vickers
    Max. Vertical Capacity 11.80″ (300mm)
    Max. Throat Depth 8.66″ (220mm)
    Dimensions 720 × 260 × 840mm
    Weight 175 lbs (80kg)
    Power Supply AC 110-220V, 50~60Hz

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