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OBT-MHB-3000 Digital Brinell Hardness Tester


OBT-MHB-3000 Digital Brinell Hardness Tester
1. Brinell hardness test is mainly used in hardness measurement for cast iron, steel products, nonferrous metals and soft alloys, etc. Besides it can be also used in hardness measurement for some non-ferrous materials, such as plastics, bakelite, etc. It is applicable to factory, workshop, laboratory, university and college, and scientific research institution.
2. The digital Brinell hardness tester is to use a steel ball of a certain diameter to press on the substance surface to be tested with specified test force. Through the specific time of holding test force, remove it and measure the diameter of the indentation of the specimen surface with reading microscope. Take the two points d1 and d2 and input them and on the LCD screen appears the Brinell hardness value. 
 
Technical specifications
1. Test Force:     612.9N (62.5kg)          4903N (500kg)
                  980.7N (100kg)          7355N (750kg)
                  1226N (125kg)          9807N (1000kg)
                  1839N (187.5kg)        14710N (1500kg)
                  2452N (250kg)          29420N (3000kg)
2. Hardness Measurement Range:       8~650 HBW
3. Value –Indicating precision:
Standard hardness test block Max error of the indicated value% Repetition error of the indicated value%
≤125 ±3 3
125<HBW≤225 ±2.5 2.5
>225 ±2 2
 
4. Amplification of Reading Microscope:    20 times 
5. Minimum Division Value of Micrometer Drum Wheel: 0.00125mm
6. Maximum Height of Sample:   220mm
7. Distance from Indenter’s center to instrument Body: 135mm
8. Voltage of Power Source:    AC220V/50Hz
9. Dimension (L×W×H):    753*550*236mm
10. Weight:                    123kg
 The Packing List
Model MHB-3000 Digital Brinell Hardness Tester    one
Case for the Accessories of the Main Machine
φ2.5、φ5、φ10mm steel ball indenter      1pc(each)
Big ,small plane testing table, “V” testing table 1pc(each)
Standard hardness test block  
HBW10/3000 (150~250) 1pc
HBW5/750 (150~250) 1pc
Spare Fuse(2A) 2pcs
Power cord 1pc
Usage instruction manual 1copy
20x reading microscope 1copy