XHRS-150 Digital Plastics Rockwell Hardness Tester
Product description:
1.XHRS-150 Digital Plastics Rockwell Hardness Tester is adopted a mechanism to load and unload the test force automatically, through rotating the Load-Change Hand Wheel to change test force; therefore the operation of this instrument is ver
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2.The method of plastics Rockwell hardness test is to press a ball indenter of a certain diameter into a specimen to be tested firstly with initial test force P0 and than together with main test force P1. After apply with total test force P (P0 + P1) and keep a stipulated duration time, than unload the main test force. The difference e between the press-in depth h1 during the initial test force keeping and the press-in depth h0 made by the initial test force applied means the permanent increment of indentation depth. Each press-in depth 0.002mm is as one hardness unit of plastics Rockwell. This test method is with the characteristic of high speed to test hardness and it is widely applied in inspecting the hardness for specimens.
Technical specifications
1. The Initial Test Force: 98.07N; Tolerance: ± 2.0%
2. The Total Test Force: 588.4N, 980.7N, 1471N; Tolerance: 2.0%
3. The Indenter Specifications:
3.1 The φ3.175mm ball indenter
3.2 The φ6.35mm ball indenter
3.3 The φ12.7mm ball indenter
4. The Power Source: AC220V±5%, 50-60 HZ
5. Time-delayed control: 2-60 seconds, adjustable
6. The Max. Height of the Specimen Tested: 175 mm
7. The Distance from the Ball Indenter Center to the Instrument Body: 165mm.
8. The Overall Dimension (Length×Width ×Height): 520×215×700 (mm)
9. The Net Weight of the Tester: 78Kg (Approx)
10. The tolerances of displaying value and the repetition of the plastics Rockwell hardness tester
| Scales |
Hardness Range of Standard Hardness Blocks |
Allowed Tolerance of Displaying Value | Max. Repetition of Displaying Value |
| HRE | 70~94HRE | ±2.0HRE | 2.5HRE |
| HRL | 100~120HRL | ±1.2HRL | 1.5HRL |
| HRM | 85~110HRM | ±1.5HRM | 2.0HRM |
| HRR | 114~125HRR | ±1.2HRR | 1.5HRR |
11. The Scales, Indenters, Test Force Values and Usage Ranges of the Plastics Rockwell Hardness Test
| Scales | Ball Indenters | Initial Test Force (N) | Total Test Force (N) | Usage Ranges |
| HRE |
φ3.175mm (1/8 inch) |
98.07 | 980.7 |
Hard plastics, hard rubbers, aluminum, tin, copper, mild steel, synthetic resin and friction materials |
| HRL |
φ6.35mm (1/4 inch) |
588.4 | ||
| HRM |
φ6.35mm (1/4 inch) |
980.7 | ||
| HRR |
φ12.7mm (1/2 inch) |
588.4 |
Jinan Hensgrand Instrument Co., Ltd.
+86-15910081986 
+86-15910081986 
4915,West jingshi Road,jinan 250012,PR CHINA.