Universal hardness tester

NEXUS 7501

General information

The NEXUS 7501 can be used for all hardness procedures according to standards.Rockwell, Superficial Rockwell, Brinell, Vickers and Knoop. But it also can do ball and indentation hardness testing for thermo plastics and the new Vickers depth (HVT) and Brinell depth (HBT) procedures.

The NEXUS 7501 universal hardness tester includes all standard hardness testing methods between 0.5kgf/4.9N - 250kgf/2.45kN. All procedures meets or exceeds DIN, ISO, ASTM and JIS.

The tester contains high-quality mechanical components and is based on a load-cell, closed loop force feed-back system. The MS Windows® tester software IMPRESSIONS™ controls the automatic testing procedure and offers fully automatic indent measuring and data storage. The integrated camera with calibrated zoom function guarantees fast, and accurate user-independent Vickers or Brinell measurement.

The test load ranges from 0.5kgf/4.9N to 250kgf/2.45kN


  • Hardness of castings and forgings
  • For flat and cylindrical work pieces
  • Wide application within the automotive and aerospace industry
  • Laboratory and workshop testing
  • Sample testing or quality control testing
  • Steels, non-ferrous metals
  • Cemented carbide, ceramics, stainless steels


  • Rockwell, Superficial Rockwell, Brinell, Vickers, Knoop, HVT & HBT, Ball indentation for plastic ISO 2039/1
  • Load cell, force feedback, closed loop system
  • Load range 0.5Kgf - 250Kgf
  • Rockwell Scales: A, B, C, D, E, F, G, H, K, L, M, P, R, S, V,
    15N, 30N, 45N, 15T, 30T, 45T, 15W, 30W, 45W,
    15X, 30X, 45X, 15Y, 30Y, 45Y
  • Vickers Scales: HV/0.5Kgf, 1Kgf, 2Kgf, 3Kgf, 4Kgf, 5Kgf, 10Kgf, 20Kgf, 30Kgf, 50Kgf, 100Kgf, 120Kgf;
  • Brinell Scales: HB1/1Kgf, 2.5Kgf, 5Kgf, 10Kgf, 30Kgf;
    HB2.5/6.25Kgf, 15.625Kgf, 31.25Kgf, 62.5Kgf, 187.5Kgf;
    HB5/25Kgf, 62.5Kgf, 125Kgf, 250Kgf;
    HB10/100Kgf, 250Kgf;
  • HVT Scales: HVT/5Kgf - 120Kgf;
  •  HBT Scales: HBT/5Kgf - 250Kgf;
  • Ball indentation for plastic ISO 2039/1
  • 15’’ Industrial HD Touch screen, Embedded Powerful Fanless System Controller, 2x 80GB SSD data storage drive Windows 7 Embedded, RJ45 LAN, WLAN, USB, RS-232
  • IMPRESSIONS™, full tester & configuration control, graphic indent simulation, test program setting for user defined test programs, large test results storage, 3 simultaneous conversions to other hardness scales, limit settings, advanced test report generator, CSV export, graphics display engine & many more functions
  • Indent ZOOM function
  • Bright LED illumination (ringlight optional)
  • Shape correction for curved surfaces
  • High accuracy depth measuring system (Rockwell, HBT, HVT)
  • Software controlled swivel operation
  • High precision spindle
  • Workpiece accommodation: 320mm workpiece height, 205mm throat depth
  • Motorized spindle (optional)
  • Meets or exceeds ISO and JIS standards
  • Wireless mouse and keyboard