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Dial Analog Rockwell Hardness Tester

Dial Analog Rockwell Hardness Tester

Model: HR-150A, HRM-45

HR-150A Dial Analog Rockwell Hardness Tester features an attractive design and easy operation. It is a popular manual Rockwell hardness testing machine. It can measure the Rockwell hardness of ferrous and non-ferrous metals. The HR-150A hardness tester is a new type of mechanical testing instrument with good structural rigidity, accurate readings, and convenient operation and maintenance. It can be used to determine the Rockwell hardness of hard alloys, quenched steel, aluminum alloys, malleable cast iron, and other materials, and is widely suitable for factory workshops and metrology departments.


Model: HR-150A Rockwell Hardness Tester
HRM-45 Superficial Rockwell Hardness Tester

General Introduction

Model: HR-150A Rockwell Hardness Tester
HRM-45 Superficial Rockwell Hardness Tester


Dial Analog Rockwell Hardness Tester features an attractive design and easy operation. It is a popular manual Rockwell hardness testing machine. It can measure the Rockwell hardness of ferrous and non-ferrous metals. The HR-150A hardness tester is a new type of mechanical testing instrument with good structural rigidity, accurate readings, and convenient operation and maintenance. It can be used to determine the Rockwell hardness of hard alloys, quenched steel, aluminum alloys, malleable cast iron, and other materials, and is widely suitable for factory workshops and metrology departments.


Rockwell hardness values are expressed as a combination of a hardness number and a scale symbol representing the indenter and the minor and major loads. The hardness number is expressed by the symbol HR and the scale designation. UNITEDTEST hardness testers are based on the same construction principle of the COMP series which are already well known for their economic, reliability and easy using.



Key Features

  • Features
  • Principle
  • Standard
  • Application

1, This equipment features comprehensive performance, excellent quality, a compact structure with a small footprint, simple and easy operation.

2, Digital display for bending angles that is intuitive, smooth operation with low noise, reliable use with long service life.

3, Reasonable design, easy maintenance, and simple lubrication. 

4, The equipment's limit has been changed to a mechanical limit switch, making it more convenient and durable. 

5, The design of wear parts is more reasonable, and the cutting edges of wear parts are easy to replace. 

6, In addition, the equipment has added an abnormal alarm function for the photoelectric switch controller, preventing equipment damage caused by system failure to stop when there is a problem with the proximity switch signal acquisition.

  1. The indenter moves down into position on the part surface

  2. A minor load is applied and a zero reference position is established

  3. The major load is applied for a specified time period (dwell time) beyond zero

  4. The major load is released leaving the minor load applied.

Dial Analog Rockwell Hardness Tester

The resulting Rockwell number represents the difference in depth from the zero reference position as a result of the application of the major load.


ASTM E18 “Standard Test Methods for Rockwell Hardness of Metallic Materials”

ISO 6508 “Metallic materials — Rockwell hardness test”

ASTM D785 “Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials”

● Measuring the Rockwell hardness of soft metal materials such as ferrous and non-ferrous metals;

● Measuring the Rockwell hardness of high-hardness alloy materials such as cemented carbide;

● Measuring the Rockwell hardness of heat-treated materials such as quenched and tempered metals;

● Measuring the Rockwell hardness of certain non-metallic materials such as plastics and bakelite.

Main Technical Specification

ModelHR-150AHRM-45
Initial testing force98.07N (10Kg)29.42N (3Kg)
Total test force

588.4N(60Kg), 

980.7N(100Kg), 

1471N(150Kg)

147.1N(15Kg),
294.2N(30Kg),
441.3N(45Kg)
Hardness indicationDial display
Max. height of test specimen200mm
Max. width of test specimen165mm
Dimensions520*215*700 mm
Weight85Kg65kg
Standard AccessoriesDiamond Rockwell Indenter, Diameter 1.5875mm Hard Alloy Steel Ball Indenter, Large Testing Table , Medium Testing Table and V-shaped Testing Table, Weight (A, B, C), HRC and HRB Hardness Blocks




Main accessories

Diamond Rockwell Indenter,
Diameter 1.5875mm Hard Alloy Steel Ball Indenter,
Large Testing Table,
Medium Testing Table and V-shaped Testing Table,
Weight (A, B, C),
HRC and HRB Hardness Blocks

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Beijing United Test Co., Ltd.