TH110 Portable Hardness Tester

TH 110

The year 1989, the first TIME Leeb portable hardness tester ROCKY HLN11A was presented to the market. Yet, the new generation of this high quality, popular hardness test r is still the best selling Leeb tester world wide. Often copied, but never equalled, the TH-110 is the 3rd generation of the ROCKY dynamic Leeb hardness testers. (standardized according to ASTM A956).

Most metallic products with a minimum solid mass starting from 0.5kg can be tested according to the Leeb principle. The display shows hardness values in all common hardness scales. The instrument is equipped with re-chargeable batteries that provide over 16 hours continuous operation.

  • Test results appear directly on the large display
  • According to ASTM and DIN standards
  • Display scales HRC, HRB, HV, HB, HS and conversion to tensile strength
  • Highly accurate readings ±6HLD
  • Correction for impact direction 360 degrees
  • Chargeable battery pack to ensure many hours of undisturbed testing and printing
  • Direct keys for easy set up of testing parameters
  • Mini-printer installed on the main unit
  • Ridged ABS anti-shock casing with sealed keypad

Industry Application

a) Aerospace:

TH110 can be used to detect the engine and structural components of aircraft. The aircraft engine structural repair manual prescribes that some of the components and spare parts are forbidden to be disassembled, and some of the parts are very difficult to disassemble, so a portable hardness tester is a good choice.

For example, when the aircraft catches a fire, we need to check the affected area caused by the fire trough hardness testing so that we can confirm the repair district. And some of the other huge structural components of aerospace also need portable hardness tester, such as turbine discs, high and low pressure turbine shafts and so on.

b) Machining:

  • Machine tool industry: TH110 can be used to detect the guide rail of machine tool body, vertical shaft and carriage.
  • Thermal treatment industry: TH110 can be used to test the hardness of hardened layer with the thermal treatment of carburization, quenching.
  • Auto-industry: The testing of the generator components, crankshaft, cylinder cover, internal cylinder, cylinder block, bearing bush, knuckle.
  • Car deport locomotive works: The testing of the crankshaft, bearings and large castings.
  • Combustion engine factory: TH110 can be used to test the hardness of the cylinder block of engine, crankshaft of cylinder cover, camshaft, connecting rod, flywheel gland, FE Tiler and so on.
  • Household appliance manufacture industry: TH110 can be used to test the hardness of the component parts of the compressor of air-conditioner, refrigerator and washing machine. In addition, it can also test the hardness of some mould cavities, surface of wheel gears.

c) Boiler pressure vessels industry:

The main parts of boiler that need testing are tubes and steam drums. The tubes have expanded connections with the steam drums. Per stipulation, expanding needs to be done on the test board before tube expansion, in addition, the hardness of the steam drums shall be higher than the tubes. Therefore, hardness testing is essential. Furthermore, the testing results shall be sent to the local labor bureau when installing the boiler.

d) Petroleum and chemical industry:

The most application in this industry is the testing of pipes and container.

e) Heat and power plant industry:

TH110 can be used to test the hardness of the high temperature screw, impeller and so on.

f) Colleges and research institutes:

TH110 is always used as teaching and scientific research instrument, as it is a perfect instrument to analyze metal material and do experiment research.

Technical Specification:

Hardness parameter HL, HRB, HRC, HV, HB, HS
Tensile strength U.T.S. σb from 374 to 2652 range (steel only)
Accuracy Within ±0.5% at 800HL,
±6HLD (760±30HLD)
Printer Thermal printer showing all test results,
settings and histogram
Statisticse Average value
Impact device D (standard)
Optional impact devices DC/D+15/DL/G/C
Max. hardness value 940HV-1000HV
Workpiece radius (convex/concave) Rmin = 50mm
(with support ring Rmin= 10mm)
Min. Workpiece weight 2-5kg on stable support
0.05-2kg with compact coupling
except C and G impact device
Workpiece min. thickness coupled 5mm (except with impact device G: 10mm, C: 1mm)
Workpiece min. case hardened depth 0.8mm, except C impact device 0.2mm
and G impact device 1.2mm
Power Rechargeable NiMh battery pack
Charger 12V, 600mA (1.8VA)
Charging time 2.5 – 4 hours
Operating temperature 0°C to 40°C
Overall dimensions 0°C to 40°C
Overall dimensions 230mm x 90mm x 47mm
Weight 495gr (incl. impact device and printer)