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Surface Condition >> Surface Roughness
Keiyu NDT : KYR-100 Roughness Tester
KYR-100 Roughness Tester


KTR-100 Surface Roughness Tester

KYR-100 High Quality Surface Roughness Gauge

The small electronic surface roughness tester KYR100 is designed for quick and accurate measurements. The gauge is suitable for use on the production floor as well as for inspection departments and quality control

KYPR100 uses a piezoelectric stylus and allows

  • Roughness measurement by Ra and Rz method
  • Three cut-off length at choice

KYR100 is simply placed on the surface to be measured and micro stylus scans the surface within only a few seconds. Depending on the preset cut-off length, the value is immediately displayed in Ra or Rz

Ra and Rz
Rz= mean surface roughness

The mean surface roughness Rz is the arithmetical mean of the highest single reading of several adjacent single measuring sections.

Ra= arithmetical average high

Ra is the generally acknowledged roughness parameter which is internationally used. This value is the arithmetical mean of the profile deviations from the mean value.
The numerical value is always smaller than the Rz value taken from the roughness profile.

KYR100 confirms to NIST calibration requirement, also DIN 4768 and ISO 4288.

Technical Data
Roughness range:  Ra(ISO), Rz(DIN), Ra and Rz in one gauge
Measuring range:  Ra: 0.05 … 15 um, Rz: 0.1 – 50 um
Cut-off length: It has 3 Cut-off lengths
1 = 0.26mm
2 = 0.8mm
3= 2.6mm
Selection of false cut-off length is indicated in the display. (It alarms if the scan is not the full length) 
Surface to be measured: flat or convexe; in groove (min. width 30 mm, length 80 mm)
Tolerance:    6% of reading
Pick-up:   piezo-electric stylus with diamond tip, radius 10 um
Tracing length:  6 mm
Tracing speed:  1 mm/sec.
Measuring unit:  um-mil select by user
Operating temperature: 0℃ - 40℃
Power supply:  built-in rechargeable battery with indication of battery condition mains
Power charger:  AC Plug with USB cable, 110/220, 50/60 Hz
Instrument housing:  aluminum
Dimension/weight:  125 mm x 73 mm x 26 mm / 200 g

Standard package
※ Main gauge
※ Calibration standard
※ USB cable
※ AC adaptor
※ Hard impact ABS plastic case



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Model Description Part No. Price Add To Cart


 KYR-100 Surface Roughness Kit



Please email us or
call 1-800-635-9108 or 913-432-7080
for current pricing.

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