Digital Rockwell Hardness Tester LHRS-150

  • Digital, multi-function LCD display
  • Electric load; Automatic loading & unloading
  • With printer for data output
  • Rockwell Scales: HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK, HRL, HRM, HRR, HRS, HRV
  • Conversion to Vickers, Brinell scales
  • Shape correction settings for curved surfaces
  • Automatic testing process without manual operating error;
  • Meets or exceeds GB/T230.2, ISO 6508-2, ASTM E18 standards
  • Optional Plastic Rockwell Accessories

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Standard Accessories

NameQuantityNameQuantity
Diamond Rockwell Indenter11.5875mm Ball Indenter1
Hardness block(HRC , HRB 1)3Large, Medium, “V” shaped Testing Table3
Weights(A、B、C)3Plastic Dustproof cover1
Paper for printing1RS232 Cable1
Operation Manual1Product Certificate1

Optional Accessories of Plastic Rockwell

NameQuantityNameQuantity
Rockwell Ball Indenter1 set ( 3pcs)Hardness block(HRE,HRL,HRM,HRR)1 set ( 4pcs)

Tolerance and Repeatability of plastic Rockwell

ScaleHardness Block RangeToleranceRepeatability()
HRE70~94HRE±2.0HRE2.5HRE
HRL100~120HRL±1.2HRL1.5HRL
HRM85~110HRM±1.5HRM2.0HRM
HRR114~125HRR±1.2HRR1.5HRR

Application of Hardness Scale, Indenter, Testing force

ScaleBall Indenter (diameter)Initial ForceNTesting ForceN
HREφ3.175mm (1/8 inch)        98.07 (10kg)980.7(100kg)
HRLφ6.35mm (1/4 inch)588.4(60kg)
HRMφ6.35mm (1/4 inch)980.7(100kg)
HRRφ12.7mm (1/2inch)588.4(60kg)
ModelLHRS-150
Indication of Hardness ValueLarge LCD screen display
Data outputBuilt-in Printer, RS232
Duration time0-60s
Carried StandardGB/T230.2、ISO6508-2、ASTME18
Preliminary Testing force10kgf(98.07N)
Testing force60kgf(588N)  100kgf(980N)   150kgf(1471N)
Rockwell ScaleHRA HRB HRC HRD HRE HRF HRG HRH HRK HRL HRM HRP HRR HRS HRV
    Hardness measuring rangeHRA:20-95 HRB:10-100 HRC:20-70 HRD:40-77
HRF:60-100 HRG:30-94 HRH:80-100 HRK:40-100
HRL:50-115 HRM:50-115 HRR:50-115
Max Height of Specimen170mm
Distance of Indenter to outer wall165mm
Power supplyAC220V+5%,50-60Hz
Overall Dimension (mm)520*240*700
Net weightAbout 80Kg
  • Industrial production, Inspection of product quality on processing technology.
  • Ferrous and nonferrous metals, Hardened steel, tempered steel, annealed steel, hardened steel, sheet of various thicknesses, carbide materials, powder metallurgy materials, hardness and thermal spray coating.