Large Frame Digital Motorized BRINELL Hardness Tester

Model No.900-356



  • Load Cell driven system provides precise control of test force application
  • Direct digital reading
  • Engineered to obtain highly sensitive and accurate readings
  • Perfect for laboratories, workshops, tool rooms, inspection labs, etc.
  • Measuring Range: 3.18-650HBW


  • Innovative closed-loop technology. The tester incorporates the latest load cell technology. The test load is applied via a closed-loop control unit with a load cell, a DC motor and an electronic measurement and control unit. The result is highly accurate Brinell hardness measurements at all test loads up to 0.5%. The common load overshoot or undershoot as known from traditional dead weight, or open-loop, systems is eliminated. The absence of mechanical weights not only eliminates friction problems but also makes the equipment less sensitive to misalignments caused by vibrations.
  • The gross weight of the tester is 50% less than the traditional dead weights type testers.
  • Test load selection by keypad and shown on the LCD screen.
  • Fully automatic test cycles. The Brinell hardness Tester features a fully automatic test cycle, load application, dwell, unloading, is performed fully automatically. This greatly improves reproducibility of test results since operator influence is eliminated.
  • Selectable dwell times by screen. The indenter, load, and other test information are shown clearly on the large LCD screen.
  • The directions for 0.102F/D2 ratios selecting according to the materials and hardness range can be showing on the screen.
  • Equipped with a 20X optical microscope to measure the diameter of Brinell indention.
  • Brinell Hardness Calculator (BHC) makes the hardness value calculation easy and convenient.

Technical Data:

  • Loads: 3000kgf (29400N), 1500Kgf (14700N), 1000Kgf (9800N), 750Kgf(7355N),500Kgf (4900N), 250Kgf (2452N), 187.5Kgf (1839N), 125Kgf (1226N),100Kgf (980N), 62.5Kgf(612.9N)
  • Load dwell duration: 2s~99s, can be set and stored
  • Tungsten Carbide Ball indenter: 10mm, 5mm, 2.5mm
  • Measuring range: 3.18HBW~ 658HBW
  • Magnification of the microscope: 20X
  • Resolution capability of the microscope: 0.005mm
  • Accuracy of Brinell Hardness Value:
    Hardness Range(HBW) Error (%) Repeatability(%)
    >≤ 125 >± 3.0 >≤ 3.0
    >125 < HBW ≤ 225 >± 2.5 >≤ 2.5
    >> 225 >± 2.0 >≤ 2 0
  • Max measurable height: 430 mm (w/large anvil) 450mm (w/small anvil)
  • Max measurable depth: 200 mm
  • Dimensions: 600mm×300mm×1000mm
  • Power supply: 220/110 V, 50/60 Hz, 4A
  • Weight: 205kg (gross) 165kg(net)
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