Digital Rockwell Hardness Tester/Hardness/Load Cell Driven Rockwell Hardness Tester

Model No. 900-415


  • Load Cell driven system provides precise control of test force application
  • Automatic conversions to HB, HV, Superficial Rockwell Scales
  • Touch Screen selectable system
  • Upper/Lower Limit Settings

Features: Model No. 900-415 Rockwell Hardness Tester

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. Utilizing the guidelines of ASTM E-18, the 900-415 digital Rockwell hardness tester offers programmable scale conversions, dwell times, statistical capabilities and test counter. Capable of testing in all of the regular Rockwell hardness scales.

Load Cell, Closed Loop, Rockwell Hardness Tester!
Touch Screen Functions w/One Touch Testing Feature!

For full conformance to the latest E18-20 specification, please call (201) 962-7373

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, Superficial Rockwell Scales
  • Touch Screen selectable system
  • Upper/Lower Limit Settings
  • Test resolution: 0.01HR 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;

Specifications:Rockwell Hardness Tester

Minor Load 10 Kgf
Major Load 60 Kgf, 100 Kgf, 150 KGF
Test Force Application Load Cell Closed Loop
Test Force Control Motorized
Results Display Hi Def LCD Digital Readout
Resolution 0.1HR
Vertical Capacity 8.0”
Throat Depth 7.8”
Height 22”
Width 8”
Depth 31”
Weight 175 lbs

Included Accessories

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

Optional Accessories for the following machines:
Model No’s: 900-415, 900-420 and 900-440

Special long shank ball indenters
Extra large 9.84″ diameter flat anvil

Part No. 900415-18
1/8″ Extended Shank Ball Indenter
Part No. 900331-ST1
1″ Indenter Extension
Part No. 900415-14
1/4″ Extended Shank Ball Indenter
Part No. 900415-1010
9.84″ Extra Large Anvil
Part No. 900415-12
1/2″ Extended Shank Ball Indenter
Part No Description
900415-18 1/8″ Carbide Ball Indenter
900415-14 1/4″ Carbide Ball Indenter
900415-12 1/2″ Carbide Ball Indenter
900415-1010 9.84″ Flat Round Anvil
900331-ST1 1″ Indenter Extension

Options: • NIST/ASTM certified test blocks, penetrators and kits are available. Please reference Hardness Test Blocks and Accessories

Scale Indenter Initial Test Force Total Test Force Application Scope
A Diamond 98.07(N)




hard alloy, carbide, surface quenched steel, etc.
D 980.7(N)


thin steel sheet, surface quenched steel, etc.
C 1471(N)


quenched steel, tempered steel, hard cast iron, etc.
F 1/16” Carbide Ball 588.4(N)


cast iron, aluminum, magnesium alloy, bearing alloy, etc.
B 980.7(N)


mild steel, copper alloy, annealed steel, etc.
G 1471(N)


phosphor bronze, beryllium copper, malleable iron, etc.
H 1/8” Carbide Ball 588.4(N)


aluminum, zinc, lead, etc.
E 980.7(N)


bearing alloy, tin, hard plastics, etc.
K 1471(N)


L 1/4” Carbide Ball 588.4(N)


hard plastic, hard rubber, aluminum, tin, copper, mild steel,

synthetic resin and friction materials, etc

M 980.7(N)


R ½” Carbide Ball 588.4(N)