Rockwell Hardness Testing
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
Multi-Scale Testing
The LR/LCR Series delivers exceptional testing versatility across the full range of regular and superficial Rockwell scales. From hardened steels to thin sheet metals, coatings, and case-hardened surfaces, a single instrument can accommodate a wide variety of applications. Models such as the LR310 combine regular and superficial Rockwell testing in one system, while the LCR500 further expands capability with user-defined load profiles from 3 to 200 kgf for specialized testing requirements. This broad testing range enables laboratories to consolidate multiple hardness testing applications into a single, flexible platform.
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
Built for consistent performance, the LR and LCR Series combine a rigid frame design with enclosed mechanics to preserve alignment and ensure repeatable results in high-use environments. LR models deliver reliable force application through a proven dead-weight system, while the LCR500 uses advanced closed-loop load-cell control to automatically monitor and maintain the correct test force throughout every cycle. This advanced force management helps eliminate operator variability and produces accurate, repeatable hardness results.
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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