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How to choose a suitable UCI probe and kits for the hardness testing application?



Firstly, it must be known what material is tested, please check the typical application in the following table, it will be helpful to choose right probe. If there is coating or plating on the specimen, it is better to choose the motorzied probe with minimum testing force, but you must consider the roughenss of suface. If the roughness is high, the light force probe is not suitable.

Secondly, if the speimen is small and massive, it is better to choose a stationary stand to make the testing reliably.

Thridly, if the specimen is a cyliner-shape, it is better to fix the probe in a small/ large cylinder kit, or MU-200 portable stand, it will be benifical to get a credible testing result.

Fourth, if the specimen can not be reached by the standard length probe, it is able to test it in the lengthen manual porbe or motorized probes. If it is inside wall of some turbines or pipes, it is able to use the manual shorten probe to complete the testing.

ForceModelControl Probe StyleStands and Kits Typical Applications
98NHP-10KManualStandard length 




Small-cylinder-kit Large-cylinder-kit


Standard probe cap

Deep-hole probe cap

Small forgings, cast material, 

weld inspection, HAZ


Induction hardened or 

carburized machine parts, 

forexample, camshafts, 

turbine weld inspection, HAZ

Measurement in grooves, on gear tooth flanks and roots, turbine blades


Standard length 

Lengthen length 

Shorten Length

Ion-nitrided stamping dies and molds, forms, presses,thin walled parts

Bearings, tooth flanks, turbine blades, inside wall of pipes with Ø >110 mm

10NMP-1000MotorizedStandard Length




Motorized V-Kit

Finished precision parts, 

gears, bearing raceway


Thin layers, for example, copper or chromium on steelcylinders;

Copper rotogravure cylinders;

Coatings, case hardened parts


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