Hangzhou Jingjing Testing Instrument Co., Ltd.

Wholesale JH‑300E Leeb Hardness Tester (with Printer) Suppliers

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JH‑300E Leeb Hardness Tester (with Printer)

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The Leeb hardness tester is a portable instrument for measuring hardness. It operates on the principle that an impact body of a specific mass strikes the sample surface from a prescribed height; the instrument measures the impact and rebound velocities at a distance of 1 mm from the surface, converts these velocity signals into voltage signals via electromagnetic induction, and processes the data internally to output the corresponding Leeb hardness value.
The JH-300E supports seven hardness scales and allows for conversion between Shore (HS), Leeb (HL), Brinell (HB), Rockwell (HRC/HRB/HRA), and Vickers (HV) scales. Its measurement ranges cover (30.6–102.6) HS, (170–960) HLD, (19–683) HB, (13.5–101.7) HRB, (17.9–69.5) HRC, (59.1–88) HRA, and (80–1042) HV. Equipped with a Type D impact device, it offers an indication error of ±6 HLD and repeatability of ±6 HLD; it supports measurement at any angle within a 360° range, enabling testing regardless of the workpiece's orientation.

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Suitable materials include steel and cast steel, alloy tool steel, stainless steel, gray cast iron, ductile iron, cast aluminum alloys, copper-zinc alloys (brass), copper-tin alloys (bronze), pure copper, and forged steel. The instrument features a software-based calibration function for quick and easy calibration. It has internal storage for 600 sets of measurement data and is equipped with a USB 2.0 interface for convenient data export and subsequent analysis.
The unit is compact and lightweight, with main unit dimensions of 210 × 85 × 45 mm and a weight of only 0.6 kg; it is powered by a 6V... Powered by a Ni-MH battery pack, the device is portable, easy to operate, and highly efficient, making it ideal for on-site non-destructive hardness testing of large, heavy workpieces. It features robust environmental adaptability, with an operating temperature range of -10°C to +55°C and a storage temperature range of -20°C to +75°C.
It is widely used across industries such as machining, aerospace, automotive manufacturing, metallurgy, rail transportation, mold casting, academic research, pressure piping, and special equipment inspection, meeting the needs of diverse scenarios including workshop-floor testing, field inspections, and incoming material quality control.

Model JH-300E
Measurement Range (30.6~102.6)HS、(170-960)HLD, (19-683)HB, (13.5-101.7)HRB, (17.9-69.5)HRC, (59.1-88)HRA, (80-1042)HV
Measurement Direction Arbitrary (360°)
Applicable Materials Steel And Cast Steel, Alloy Tool Steel, Stainless Steel, Gray Cast Iron, Nodular Cast Iron, Cast Aluminum Alloy, Copper-Zinc Alloy (Brass), Copper-Tin Alloy (Bronze), Pure Copper, Forged Steel
Indication Error And Repeatability Type D Impact Device: ±6HLD (Indication Error), ±6HLD (Indication Repeatability)
Hardness Scales 7 Types Including Shore (HS), Leeb (HL), Brinell (HB), Rockwell (HRC/HRB/HRA), Vickers (HV)
Upper And Lower Limit Setting Range (170-960)HLD
Indication Calibration Support Software Indication Calibration
Data Storage 600 Groups Of Measured Values
Data Interface USB 2.0
Working Voltage 6V Nickel-Metal Hydride Battery Pack
Working Temperature -10℃~+55℃
Storage Temperature Stability -20℃~+75℃
External Dimensions 210×85×45mm (Main Unit)
Weight 0.6KG

About Us
Hangzhou Jingjing Testing Instrument Co., Ltd.
Hangzhou Jingjing Testing Instrument Co., Ltd.
Hangzhou Jingjing Testing Instrument Co., Ltd. is China JH‑300E Leeb Hardness Tester (with Printer) Suppliers and Wholesale JH‑300E Leeb Hardness Tester (with Printer) Factory. It is a comprehensive enterprise specializing in the production, R&D, sales, maintenance, and metrological management of hardness testers, tensile testing machines, metallographic microscopes, and metallographic sample preparation equipment. The company employs a team of highly regarded engineers and service professionals within the domestic industry, many of whom have contributed to technical development projects and collaborations with well-known instrument manufacturers across China. Thanks to our consistent product quality and high cost-effectiveness, we have established a distributor network covering the Pearl River Delta, Yangtze River Delta, Central China, East China, and North China regions. This extensive network enables us to provide comprehensive after-sales support to our customers. Furthermore, we serve as an authorized agent and distributor for numerous internationally and domestically renowned testing equipment brands. With a product range of over a thousand items, we play a key role in supporting quality management systems and delivering integrated hardware solutions for enterprise certification needs. Our product portfolio includes dimensional metrology, mechanical testing, electrical testing, optical instruments, non-destructive testing, educational instruments, precision instruments, specialized measurement tools, and environmental testing equipment. Guided by our corporate philosophy of "Sustainable Development," we consistently uphold the business principle of:"Better price for equal quality; better service for equal price." This commitment has garnered widespread recognition and strong support from our customers. Our team is dedicated to serving each client with sincerity, enthusiasm, attention and professionalism, delivering end-to-end support through pre-sales technical consulting, in-sales technical training, and after-sales technical support. Integrity fuels our development and strength builds our brand. We are continuously striving to enhance our product offerings and deliver professional service, partnering with our customers to build a bright future together. We sincerely look forward to establishing long-term collaborations with both new and existing clients. We welcome your inquiries and are eager to explore opportunities for cooperation!
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