Superficial Rockwell Hardness Testers / Superficial Hardness Scales


This Superficial rockwell hardness tester comprises the very best in “state of the art” design along with dynamic precision only found at Phase II. The 900-346 Superficial Rockwell scale hardness tester is easy to operate, yet engineered to obtain highly sensitive and accurate readings. Conforming to ASTM E-18 Rockwell Hardness standards, the 900-346 Superficial rockwell hardness tester will offer unmatched repeatability in all standard Rockwell Hardness scales (table shown below). A perfect, rugged performer suited for any environment including heat treat facilities, tool rooms, workshops, laboratories and inspection labs. Lifetime technical support is included on all Phase II Hardness Testers. So test away with confidence and a level of accuracy you will only find at Phase II. Also available with Direction Verification to ASTM E18-20 Meets the latest NADCAP specifications too. Click on “Choose an Option” to add Direct Verification to your order. Here is what comes with direct verification:
  • 1pc USA made certified diamond indenter
  • 1pc USA made certified 1/16″ ball indenter
  • 4pc ASTM Certified Superficial Rockwell test blocks
  • 1pc full form calibration certificate
  • 1pc full form factory Direction Verification certificate

Load Cell, Closed Loop, Superficial Rockwell Hardness 

Touch Screen Functions w/One Touch Testing Feature!

Features: Model No. 900-346 Superficial Rockwell Hardness Tester

This digital Superficial Rockwell hardness tester with fully automated load/unload procedures affords highly sensitive and accurate readings. Micro computer controlled Touch Screen with USB output to PC. The 900-346 digital Superficial Rockwell hardness tester offers programmable scale conversions, dwell times, statistical capabilities and test counter. Capable of hardness testing in all of the regular Rockwell hardness scales Direct Loading Method With Load-Cell Instead Of Dead Weight System. High Speed Test Cycle and Extremely Accurate Loading Control 
  • Automatic hardness conversions to HB, HV, Regular Rockwell Scales
  • Touch Screen selectable system
  • Upper/Lower Limit Settings

Specifications: Rockwell Hardness Tester

Minor Load 3 Kgf
Major Load 15 Kgf, 30 Kgf, 45 KGF
Test Force Application Load Cell Closed Loop
Test Force Control Motorized
Results Display Hi Def LCD Digital Readout
Resolution 0.01HR
Vertical Capacity 7.80”
Throat Depth 5.90”
Height 700mm
Width 600mm
Depth 250
Weight 220 lbs

Accessories: Included

  • N-scale Diamond Indenter
  • 1/16” Ball Indenter
  • 2- HRN test Blocks
  • 3- HRT Test Block
  • Test Table 5.87” (150mm)
  • Flat Anvil 2.5” (63mm)
  • Std. V- Anvil
  • Dust Cover
  • Accessory Case
  • Test resolution:  0.01HR Rockwell unit;
  • Operation temperature:   50° – 95°F (10ᵒC~35ᵒC)
  • Power supply:  single phase, AC, 110-220 with manual change, 50~60Hz, 4A;
  • Machine dimension:  700mm×250mm×600mm.

Additional information

Weight 200 lbs
Model No.



With Direct Verification, Without Direct Verification