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Testers & Optical Equipment
Series 640
Digital Twin Rockwell Hardness Tester
Series 640
FEATURES
Twin tester-Regular Rockwell & Rockwell Superficial hardness for metal and plastic material.
Horizontal protrudent indenter design, also suitable for internal and external testing.
Testing on surfaces difficult to reach. Testing internal surface of rings and tubes with diameters over 23mm.
Testing force is set automatically according to testing scale.
Provided with many features such as high measuring precision, wide measuring range with 30 rockwell scales.
Measuring results are digitally displayed and can be printed, or transmitted to external computer automatically by USB or RS-232 cable.
Test value can be transformed to the value of HB, HV, HK and σb value.
The tester meets all the following standard such as ISO 6508-2, ASTM E18.
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PRODUCT SPECIFICATIONS
INCH
METRIC
Others
Rockwell Scales
Test Force
Resolution
Test Height
Throat Depth
Code No.
HRA, HRB, HRC, HRD,
HRE,HRF, HRG, HRH,
HRK, HRL, HPR, HRR,
HRS, HRV
147.1, 294.3,
441.3N
(15, 30, 45kgf)
0.1HR
260mm
150mm
640-20-3
Rockwell Scales
Test Force
Resolution
Test Height
Throat Depth
Code No.
HRA, HRB, HRC, HRD,
HRE, HRF, HRG, HRH,
HRK, HRL, HPR, HRR,
HRS, HRV
147.1, 294.3,
441.3N
(15, 30, 45kgf)
0.1HR
260mm
150mm
640-20-3
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