LR/LCR Series Rockwell-type Hardness Testers
Versatile Hardness Testing for Every Need
The LR/LCR Series Hardness Testers deliver accuracy and flexibility for determining Rockwell hardness across a wide range of materials. Featuring advanced load control, intuitive operation, and rugged construction, these testers ensure consistent, repeatable results with minimal operator effort.
Designed for efficiency, the LR/LCR Series combines modern technology with user-friendly features to streamline your workflow and boost productivity.
Why Choose LECO LR/LCR Series
Wide Capability
The LR/LCR Series covers the complete spectrum of regular and superficial Rockwell scales, allowing you to test everything from hardened steels at 150 kgf down to thin sheet metal or case-hardened surfaces using 15 kgf or 3 kgf loads. Models like the LR310 combine regular and superficial scales in one instrument, while the LCR500 adds user‑defined “free” load profiles between 3 and 200 kgf for specialized applications. With this flexibility, one tester can replace multiple single‑scale machines.
Ease of Use
The LR/LCR Series streamlines testing with clear digital displays, automatic hardness conversions, and quick data output. Touchscreen-equipped models make parameter setup simple, while features like OK/NG pass/fail indicators enable immediate decision‑making. Automatic start triggers the test when the indenter contacts the sample, speeding workflow and reducing operator input, ideal for high‑throughput labs and shop‑floor quality checks.
Precision & Consistency
Reinforced frame construction and enclosed mechanics preserve alignment and reduce variability in demanding environments. LR models use a proven dead‑weight system for reliable force application, while the advanced LCR500 employs closed‑loop, self‑compensating load‑cell control that actively monitors and adjusts test force in real time. This ensures each indentation is made with the correct load, regardless of environmental vibration or operator technique, delivering highly consistent hardness results, shift after shift.
Rugged & Efficient Design
Rockwell testing is naturally fast. Automatic minor and major load application, instant digital readouts, and minimal sample prep requirements allow operators to move from test to test quickly. Durable frames and long‑life components maintain calibration stability over years of high-volume use, making these testers ideal for production labs where uptime and reliability are essential.
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Applicable Methods
LECO hardness testers adhere to these approved methods.
- ASTM E18 Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials
- ISO 6508-2 Metallic Materials – Rockwell Hardness Test: Verification & Calibration of testing machines and indenters
- JIS B 7726 Rockwell Hardness Testing – Verification and Calibration of Testing Machines and Indenters
- JIS K 7202 Rockwell Hardness Test for Plastics
- JIS Z 2245 Rockwell Hardness Test – Test Method
Instrument Support
Ensure reliable instrument performance with extensive support, training, and maintenance services. Need tailored support for your hardness testing instruments? Our experts are standing by.
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