Dolphin Nose Rockwell Hardness Tester (Model: DNR-150)

The Rockwell Hardness Tester (Model: DNR-150) is an advanced, high-precision testing system designed for ultimate stability and ease of use. It features a unique extended dolphin nose design that provides a generous vertical test height of 300mm and a deep throat depth of 220mm, allowing for the effortless evaluation of large or uniquely shaped components. Utilizing a manual handwheel for pre-loading, the machine fully automates the main-load application and the overall testing cycle. Instead of relying on traditional, cumbersome dead weights, the DNR-150 applies test forces via an innovative closed-loop control unit equipped with a high-accuracy load cell, a DC motor, and an integrated electronic measurement and control system. This cutting-edge setup guarantees highly precise measurements across all test loads with an accuracy of up to 0.5%.

Engineered for modern industrial workflows, this model incorporates simple plug-and-play technology that makes its initial installation significantly faster and easier compared to conventional weight-type machines. Structurally, the tester is built around a heavy-duty, integrated casting body with an extra-wide basement, ensuring permanent structural stability and minimizing vibration during tests. To facilitate seamless data management, the DNR-150 is equipped with built-in RS232 and USB ports, allowing for direct, hassle-free connectivity to a PC for quick data transfer and analysis.