Brinell, Rockwell & Vickers Optical Hardness Tester HBRVU-187.5

 Model HBRVU-187.5 Brinell Rockwell & Vickers Optical Hardness Tester Model HBRVU-187.5 Brinell Rockwell & Vickers Optical Hardness Tester adopting Rotation Test Force Transformation institutions and optical measurement Indicating System,builts-in indentation measuring devices . The teser is a multi-purpose one that can measure the hardness of materials by adopting different methods ,which has a variety of test force and a variety of indenters, and is suitable for the measuring Rockwell, Vickers hardness of metal materials or specimen .This machine widely used for testing hardnesses of ferrous metals, nonferrous metals, and tungsten carbide and the carburized layer and the chemical treatment layer ,which has been widely used in factory workshops, labratories, universities and research institutions.Main technical parametersPreliminary test force(N)  :  98Total test forceVickers hardness test(N):  294   588  980Rockwell hardness test(N):588    980  1471Brinell Hardness test(N):306   613   1839magnification of microscope      37.5×        75× Micro-Measuring drum wheel minimum division value0.004mm for  37.5×0.002mm for  75×Max height of speciments(mm)    180Distance from indenete center to machine body (mm)  200Machine size(mm)      560×260×760Power supply     AC220VWeight(kg)    90Degree of hardness test seopeRockwell hardness test(70-85)HRA(30-100)HRB(20-67)HRCShow value accuracy±1HRVickers Hardness test(4-450)HBShow value accuracyP≥1839N ±3%   P1839N ±4%Vickers hardness test(14-1000)HVShow value accuracy±3%