HRM-45S Digital Display Surface Rockwell Hardness Tester
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Description
Product Introduction:
HRM-45S Digital Display Surface Rockwell Hardness Tester It features a novel appearance and a menu-driven interface. The measuring unit employs a grating sensor and computer control, with hardness readings displayed directly on an LCD screen, making it an electromechanical integrated hardness testing instrument.
This instrument can automatically convert among various hardness parameters, automatically determine the minimum specimen thickness, and measure the ambient temperature during testing. It features simple operation, minimal indentation, and high accuracy.
It features a built-in printer for recording relevant test results, enabling automated operation and eliminating human error in handling and reading measurements.
Main uses and scope of application:
Surface‑hardened steels, copper and aluminum alloy sheets, strip steel, cemented carbides, as well as galvanized, chrome‑plated, and tin‑plated materials—along with various metallic materials undergoing surface heat treatment or chemical surface treatments, and castings and forgings of both flat and cylindrical shapes. These are widely used in the steel, nonferrous metals, automotive, and aerospace industries, as well as in applications involving cemented carbides, ceramics, and stainless steels. Due to its broad range of applicability, Rockwell hardness testing has become extensively adopted in manufacturing, serving as a key method for assessing product quality and establishing optimal processing parameters. The Rockwell hardness tester is a commonly employed instrument for hardness testing in production facilities, universities, and research institutions, as well as for educational and scientific research purposes.
Key functions and features:
1. The test hardness value is displayed directly on the large LCD screen.
2. The housing is manufactured in a single casting using a specialized sand‑casting process, ensuring a stable, deformation‑free structure that can operate reliably even in harsh environments. The automotive‑grade paint finish offers excellent scratch resistance, maintaining a bright, like‑new appearance even after years of use.
3. We possess in-house R&D, design, and manufacturing capabilities, and provide lifetime support for spare parts replacement, maintenance, and system upgrades.
Technical Specifications:
| Parameter Name | Parameter Data |
| Initial test force (N) | 3 kgf (29.42 N) Permissible tolerance ±2.0% |
| Total Test Force (N) | 15 kgf (147.1 N) 30 kgf (294.2 N) 45 kgf (441.3 N) |
| Surface Rockwell scale | HR15N, HR30N, HR45N, HR15T, HR30T, HR45T |
| Inspection criteria | GB/T 230.1, GB/T 230.2 National Standards, JJG 112 Verification Procedure |
| Accuracy | 0.1HR |
| Hold time (s) | 1-60 |
| Hardness Indication Reading Method | LCD |
| Maximum allowable height of the specimen (mm) | 190 |
| Distance from the center of the indenter to the machine body (mm) | 165 |
| Hardness tester external dimensions (mm) | 520×240×720 |
| Power supply | 220V/50HZ |
| Instrument weight (kg) | 70 |
| Hardness Test Range | HR15N:70-94 HR30N:42-86 HR45N:20-77 HR15T:67-93 HR-30T:29-82 HR45T:10-72 |
Standard configuration:
| Serial number | Name (Specification) | Quantity | Serial number | Name (Specification) | Quantity |
| 1 | Diamond Rockwell indenter | 1 piece | 7 | Power cord | 1 piece |
| 2 | φ1.5875 mm ball indenter | 1 piece | 8 | RS-232 communication cable | 1 piece |
| 3 | Large flat test stand, medium flat test stand, “V”-shaped test stand | A total of 3 units | 9 | Weights A, B, and C | A total of 3 units |
| Standard Rockwell hardness blocks | 10 | Dustproof plastic cover | 1 piece | ||
| 4 | HR30T | 1 piece | 11 | Certificate of Product Conformity | 1 serving |
| 5 | HR30N HR15N | A total of 2 pieces | 12 | Printer paper, printer user manual | One copy each |
| 6 | Fuse 2A | 2 pieces | 13 | Product User Manual | 1 copy |
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