TWIN Rockwell/Superficial Rockwell Hardness Tester


1 in stock



LIKE NEW: Full mfg warranty included.

Features: Model No. 900-440

This digital Rockwell hardness tester with fully automated load/unload procedures affords highly sensitive and accurate readings. Micro computer-controlled Touch Screen with USB output to flash drive. The 900-440 digital Rockwell hardness tester offers programmable scale conversions, dwell times, statistical capabilities, and a test counter. Capable of testing in all the regular Rockwell and Superficial Rockwell hardness scales.
  • Direct Loading Method with Load-Cell Instead Of Dead Weight System. High-Speed Test Cycle and Extremely Accurate Loading Control Automatic conversions to HB, HV, Popular Rockwell Scales
  • Touch Screen selectable system
  • Upper/Lower Limit Settings
  • Test resolution: 0.1HR Rockwell unit;
  • Operation temperature: 50° – 95°F (10ᵒC~35ᵒC)
  • Ambient environment: clean, no vibration, no strong magnetic field, and no corrosive medium.
  • Power supply: Single phase, AC, 110-220 with manual change, 50~60Hz, 4A.


Minor Load  3kgf / 10 Kgf
Major Load  60 Kgf, 100 Kgf, 150 KGF,   15KGF, 30KGF, 45KGF
Test Force Application  Load Cell Closed Loop
Test Force Control  Motorized
Results Display  Hi Def LCD Digital Readout
Resolution  0.01HR
Vertical Capacity  8.0”
Throat Depth  7.8”
Height  22”
Width  8”
Depth  31”
Shipping Weight  175 lbs

Accessories: Included

  • C-scale Diamond Indenter
  • 1/16” Ball Indenter
  • 2- HRC test Blocks
  • 1- HRB Test Block
  • 1-HRN Test Block
  • Test Table 5.87” (150mm)
  • Flat Anvil 2.5” (63mm)
  • Std. V- Anvil
  • Dust Cover
  • Accessory Case

Additional information

Weight 175 lbs
Dimensions 31 × 8 × 22 in
Model No.