Established in 1994, Cometech Testing Machines, Taiwan’s best quality control instrument manufacturer, which has invested in product development, design and manufacturing for a long time. The quality and function of our products continue to update and improve. We have a team of engineers with software and hardware R&D capabilities. In Taiwan, we are the pioneer of QC instrument industry. We are also the largest instrument manufacturer in Taiwan and have our own R&D center.
 
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Hardness Testing Machines ⇓

QC-HR150A
Manual Rockwell Hardness Tester

QC-DR3
Digital Rockwell Hardness Tester

QC-DR1
Full-Auto Rockwell Hardness Tester

1. QC-DR1 Full-Auto Rockwell Hardness Tester

The “Premium” Choice — Designed for maximum speed and the elimination of human error through a fully motorized system.

Key Features

  • One-Touch Operation: From initial contact to the final result, the machine automatically handles specimen lifting, pre-loading, main load application, dwelling, and unloading.

  • Closed-Loop Load Cell: Unlike traditional weight-based systems, this model uses a high-precision load cell to monitor force in real-time, ensuring superior accuracy and stability.

  • Large Color Touchscreen: Displays hardness values, statistics (average, range), and provides instant conversion to other scales such as Brinell ($HB$) or Vickers ($HV$).

  • Data Management: Supports USB data export and RS-232 communication for seamless integration with laboratory information systems.

Technical Specifications

  • Control: Full-Auto PLC with Touch Screen.

  • Hardness Scales: HRA, HRB, HRC (and other standard Rockwell scales).

  • Resolution: 0.1 HR.

  • Standard Accessories: Diamond Indenter, 1/16″ Ball Indenter, and Standardized Hardness Blocks.

2. QC-DR3 Digital Rockwell Hardness Tester

The “Efficiency” Choice — A balanced solution providing digital precision with semi-automatic operation for industrial QC lines.

Key Features

  • Digital LCD Display: Eliminates reading errors associated with analog dials by providing a clear digital readout of the hardness value.

  • Semi-Automatic Loading: The operator manually raises the specimen to reach the pre-load (minor load), after which the machine takes over the main loading and unloading cycle automatically.

  • Value Conversion: Features built-in hardness conversion tables, allowing the operator to see equivalent values in different scales on the screen.

  • Reliability: A robust industrial frame designed for high-frequency use in manufacturing environments where speed is prioritized over full automation.

Technical Specifications

  • Display: Digital LCD.

  • Test Loads: 60kg, 100kg, 150kg.

  • Loading Control: Automatic Motorized Loading/Unloading.

  • Dwell Time: Adjustable (0–60 seconds).

3. QC-HR150A Manual Rockwell Hardness Tester

The “Reliable” Choice — A classic, purely mechanical tester that requires no electricity, offering extreme durability and ease of maintenance.

Key Features

  • Purely Mechanical: Operates using a dead-weight system. Since it does not require a power source (except for internal lighting in some versions), it is ideal for field sites or workshops.

  • Large Analog Dial: Features a high-contrast dial gauge that is easy to read and resistant to harsh environmental conditions like dust or humidity.

  • Low Maintenance: With no complex electronic components, this unit is known for its long service life and straightforward calibration/repair process.

  • Cost-Effective: The most affordable entry point for standardized Rockwell hardness testing without compromising the fundamental accuracy of the test.

Technical Specifications

  • Operation: Fully Manual (Lever-driven).

  • Test Loads: 60kg, 100kg, 150kg.

  • Display: Large Analog Dial Gauge.

  • Ideal For: Educational institutions, small workshops, and rugged environments.

Feature QC-DR1 (Full-Auto) QC-DR3 (Digital) QC-HR150A (Manual)
Operation Fully Motorized / One-touch Semi-Automatic / Digital Fully Manual / Dial
Display Large Touch Screen LCD Digital Display Analog Dial Gauge
Accuracy Highest (Load Cell system) High (Standardized) Standard (Mechanical)
Power Req. Required Required Not required
Ideal For High-volume R&D / Lab Industrial QC Line Workshops / Schools

Cometech QC-GS Durometer Stand Holder

Key Features

  • Eliminates Human Error: Designed to hold both analog and digital durometers, eliminating measurement inconsistencies caused by unstable hand pressure or improper vertical alignment.

  • Constant Loading Force: Equipped with standardized dead weights (e.g., 1 kg for Shore A and 5 kg for Shore D) to apply a uniform and consistent force to the specimen, as strictly required by ASTM and ISO standards.

  • Controlled Descent Speed: Features a manual operating handle that ensures a steady and controlled descent, allowing the indenter to contact the specimen surface smoothly and consistently every time.

  • Precision Alignment: The base plate offers high flatness and can be adjusted to ensure it is perfectly perpendicular to the indenter, guaranteeing maximum measurement accuracy.

  • Robust Construction: Built with a high-grade metal frame and stable base to minimize vibrations and ensure long-term durability in professional laboratory environments.

Technical Specifications

  • Conforming Standards: ASTM D2240, ISO 868, ISO 7619.

  • Compatibility: Suitable for Shore A, B, C, D, O, and OO durometers.

  • Standard Loading Weights:

    • For Shore A: 1 kg (1,000g).

    • For Shore D: 5 kg (5,000g).

  • Adjustable Height: The clearance can be adjusted to accommodate various specimen sizes.

  • Weight: Approx. 15 – 20 kg (including weights).

แท่นจับเครื่องวัดความแข็ง Cometech QC-GS (Durometer Stand Holder)

GS-701N
C-type Hardness Tester

GS-702N
D-type Hardness Tester

GS-709N
A-type Hardness Tester

Teclock GS-700 Series Durometers (GS-701N, GS-702N, GS-709N)

Common Series Features

  • Global Compliance: Manufactured in accordance with JIS K 6253, ASTM D 2240, and ISO 7619 standards to ensure maximum precision in polymer hardness measurement.

  • Peak Hold Function: Features a peak indicator needle that remains at the maximum measured value, allowing for accurate recording after the device is removed from the specimen.

  • Heavy-Duty Construction: Built with high-quality, durable housing suitable for both controlled laboratory environments and rugged production floors.

  • User-Friendly Operation: Simply press the pressure foot against the material surface; the dial provides an immediate hardness reading from 0 to 100.

Model Comparison Table

Model Type Target Materials Indenter Geometry
GS-709N Shore A General rubber, soft plastics, elastomers, tires. Frustum (Truncated Cone)
GS-702N Shore D Hard plastics, high-density rubber, resins, acrylics. Pointed Cone (30° Angle)
GS-701N Shore C Sponge rubber, foam, low-density materials, soft elastomers. Hemispherical (R2.4 mm)

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107/69 Moo 6, Khu Khot, Lam Luk Ka District, Pathum Thani 12130

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