HBRV-187.5 Motorized Brinell Rockwell & Vickers Hardness

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-HBRV-187.5 Motorized Brinell Rockwell & Vickers Hardness
1. Hardness is one of the important mechanic characteristics of the material while the hardness testing is the most quickly and economic testing method,as well as an important method to judge the quality of the metal material or its component parts. The mechanic characteristics of most metal materials such as the strength, tiredness, wriggling and wearing out can be tested out approximately through its hardness testing.
2. The Motorized Brinell Rockwell & Vickers Hardness Tester, a multi-functional hardness tester with Brinell, Rockwell &Vickers 3 kinds of testing methods and 7 steps testing force will meet the needs of many kinds of hardness measurement. The instrument is adopted automatic shifter to load, dwell and unload testing force, therefore the operation for this instrument is simple, easy and quickly.

Technical specifications
1.  The Initial Test Force: 98.07N (10Kg); Tolerance: ± 2.0%
2. The Tolerance of Total Test Force: ± 1.0%
2.1  The Test Force of Brinell Hardness:  294.2N(30kg), 306.5N (31.25kg), 612.9N (62.5kg),
980.7N(100kg), 1893N(187.5kg)
2.2  The Test Force of Rockwell Hardness:  588.4N (60kg), 980.7N (100kg), 1471N(150kg)
2.3  The Test Force of Vickers Hardness:  294.2N (30Kg), 980.7N (100Kg)
3.  The Indenter Specifications:
3.1  The diamond Rockwell indenter
3.2  The diamond Vickers indenter
3.3  The φ1.5875 mm, φ2.5 mm, φ5 mm ball indenter
4.  The Power Source and the Voltage:  AC220V±5%, 50-60 HZ
5.  Time-delayed control:  2-60 seconds, can be adjusted
6.  The Distance from the Indenter Central Point to the Instrument Body:  165mm.
7.  The Max. Height of the Specimen:
7.1  The Max. Height of the Specimen for Rockwell Hardness:  170mm
7.2  The Max. Height of the Specimen for Brinell & Vickers Hardness:  140mm
8.  The Amplification of Objective:  37.5×;  75×
9.  The Overall Dimension of Hardness Tester(Length×Width×Height): 520×215×700mm
10.  The Total Weight of the Tester:  78kg
Rockwell Hardness
11. The Tolerance of Rockwell Hardness Display Value
Hardness Scale Hardness Range of 
The Standard Testing Blocks
The Max. Tolerance of 
Hardness Display Value
HRA 20~≤75HRA ±2HRA
>75~≤88HRA ±1.5HRA
20~≤45HRB ±4HRB
>45~≤80HRB ±3HRB
>80~≤100HRB ±2HRB
HRC 20~≤70HRC ±1.5HRC
Brinell Hardness
12. The repetition and tolerance of displayed Value for Brinell hardness tester
Hardness Value of 
Standard Testing Blocks (HBW)
Tolerance of 
Displayed Value (%)
Repetition of 
Displayed Value (%)
≤125 ±3 ≤3
125<HBW≤125 ±2.5 ≤2.5
>225 ±2 ≤2
Vickers Hardness
13. The Tolerance and Repetition of Displayed Value for Vickers Hardness Tester
Tolerance of Displayed Value Repetition of Displayed Value
Hardness Scale Displayed Value of 
Hardness Test Block
Tolerance of 
Displayed Value
Displayed Value of 
Hardness Test Block
Repetition of 
Displayed Value
≤250HV ±3% ≤225HV 6%
300~1000HV ±2% >225HV 4%