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Dial Display HRA HRB HRC Manual Rockwell Hardness Tester

R-150M manual Rockwell hardness tester with HRA, HRB and HRC test function. No need any electric power, easy operate and hardness value read directly from the dial.
  • R-150M
  • EBP
  • Shanghai, China
  • 120 Sets Per Month
  • L/C, T/T, D/P, Western Union, Paypal
  • 1 set
Dial Display HRA HRB HRC Manual Rockwell Hardness Tester

1. The dial will display hardness value directly, indicator responses sensitively, show the hardness value accurately, the test value is more accurate than national standard;
2. One-time casted molding shell, stable structure and it is not easy to be out of shape. It can work under harsh environment; the shell coating adopted car paint technology with white color. it has strong scratch resistance capability and still look bright as new after use many years;

Working principle of Rockwell hardness test:
The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, where A is the scale letter.

Main application:
Hardened steel, quenched and tempered steel, annealing steel, bearing steel, strip steel, hardened steel sheet, hard alloy, etc.;

Technical parameters:
Model R-150M
Conversion scale Check Conversion table
Preliminary test force 10Kg(98N)
Total test force 60Kg (588N), 100Kg (980N), 150Kg (1471N)
Tolerance range:±1.0%
Resolution 0.5HR
Hardness value range HRA:20~88  HRB:20~100  HRC:20~70
Hardness data read Dial
Loading method Manual
Dwell time Manual
Test space Maximum height :170mm
Maximum throat depth:135mm
Size / weight Instrument size: 466*238*630mm(L×W×H)/Net Weight: 65kg
Executive standard GB/T230.2 , BSEN 6508, ASTM E18 , ISO 6508 , JJG112

Standard Accessory:
Standard accessories Rockwell hardness tester host: 1 set
Diamond Rockwell indenter:1 pc
1.588mm diameter hard alloy steel ball indenter :1 pc,
Standard hardness block: 3 pcs
Large testing table: 1 pc
Medium testing table: 1 pc
V-shaped testing table: 1 pc,
1.588 mm diameter steel ball :5 pcs
Dust-proof cover: 1 pc,   Accessory case :1 pc
Operating instruction :1pc   Quality certificate :1 pc
Hardness conversion table:1pc   Warranty card :1 pc.
Optional accessories Block, Indenter

Hardness scale, force, Indenter relation:
Scale Indenter Preliminary test force (N) Total test force (N) Applications
A Diamond indenter
coning angle 120°0.2mm radius  of top sphere  

588 Horniness alloy, cementite steel

980 Thin steel, quenched case

1471 Quenched steel, thermal refined steel, cast steel
F Diameter of steel ball
(1/16 inch)

588 Anneal copper alloy, thin soft steel

980 Soft steel, aluminum alloy, copper alloy, casting

1471 Pearliest iron, copper, nickel, zinc, nickel alloy
H Diameter of steel ball
(1/8 inch)




Dial Display Hra Hrb HRC Manual Rockwell Hardness Tester
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0576-86011208 / 13524552810
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