86252D Leeb Hardness Tester
Upgraded Model with Integrated Leeb D Probe
Advanced Dual-Coil Technology
Exceptional Accuracy: ±6 HL
Ideal for Fast, Reliable On-Site Testing
The 86252D is a state-of-the-art, palm-sized metal hardness tester that combines both the impact device and controller in a single compact unit—small enough to fit in your pocket. Featuring the latest dual-coil technology, it delivers outstanding measurement accuracy (±6 HL) and repeatability (6 HL). The built-in orientation sensors automatically correct measurement errors caused by different impact directions, ensuring consistently accurate data. The tester also includes a durable metal housing and a bright OLED display. Equipped with a D-type impact device, the 86252D is ideal for a wide range of testing applications—from polished parts and heat-treated surfaces to situations requiring high test volume. It also features USB charging and supports user re-calibration.
Applications
The 86252D portable Leeb hardness tester is suitable for evaluating the hardness of a wide variety of metal materials, including steel, cast steel, alloy steel, stainless steel, gray cast iron, ductile iron, cast aluminum alloy, copper-zinc alloy, copper-tin alloy, pure copper, and forged steel. It’s an ideal tool for use on machine tool guides, automotive chassis, heavy components, mold cavities, bearings, pressure vessels, and installed or assembled machinery. This device helps manufacturers with efficient quality control and production process optimization.
Parameters
| Parameters | Value |
|---|---|
| Probe | Impact device D |
| Hardness Scales | HL, HV, HB, HS, HRA, HRB, HRC |
| Measurement Range | HLD: (170-960); HV(83-976); HB(30-651); HRC(17.6-68.5); HS(26.4-99.5); HRB(13.5-100); HRA(60-85.8) |
| Resolution | 1HL |
| Accuracy | ±12 HL, ±6 HL typical |
| Repeatability | 6HL (factory standard) |
| Display | 128 * 64 dot matrix OLED |
| Powe Supply | Rechargeable lithium battery 3.7V@250mAh, full charge for over 5000 continuous measurements |
| Size | 148*34*24 mm |
| Weight | About 68 g |
| Working Temperature Range | -10~50℃，0~85%RH（no condensation） |
| Storage Temperature Range | -10~60℃，0~85%RH（no condensation） |
Features
All-in-One Design, Simple Operation
This pen-style tester is lightweight and portable, designed for ease of use with an integrated impact device and controller.
High Accuracy via Patented Dual-Coil Technology
The advanced dual-coil system ensures highly accurate and repeatable measurements every time.
Automatic Direction Compensation
Thanks to the built-in directional sensor, the device automatically compensates for errors caused by different testing angles—making multi-directional measurements effortless.
Compatible with a Wide Range of Metals
The tester supports 10 common metal types including steel, alloy tool steel, stainless steel, and gray cast iron—perfect for a variety of industrial applications.
Multiple Hardness Scale Conversions
The 86252D allows easy conversion between several hardness scales including Leeb (HL), Vickers (HV), Brinell (HB), Shore (HS), and Rockwell (HRA/HRB/HRC), eliminating the need for manual lookups.
Durable Tungsten Carbide Impact Device
Part of the impact device is made from tungsten carbide, a material nearly as hard as diamond—ensuring long-lasting durability.
USB Rechargeable Battery
Powered by a rechargeable lithium battery, the tester can be conveniently charged via a standard USB port.
User Calibration Function
Users can easily calibrate the device using standard test pieces to minimize error and maintain precision.
Qualifications and Standards
86252D Hardness Tester conforms to the following standards:
GB/T 17394.1 Metallic materials-Leeb hardness test-Part 1: Test method
GB/T 17394.2 Metallic materials-Leeb hardness test-Part 2: Verification and calibration of hardness tester
GB/T 17394.4 Metallic materials-Leeb hardness test-Part 4: Tables of hardness values conversion
JB/T 9378-2001 Industry standard of Leeb hardness tester
JJG 747-1999 Verification regulation of Leeb hardness tester
Operation
Loading: Push down the loading sleeve of the probe to lock the impact body.
Positioning: Press the probe firmly against the surface of the object to be measured and keep it still.
Measurement: Press the release button on the top of the probe to measure the hardness of the object.
Cautious：
When measuring, the distance between any two indentations should not be less than 3mm, and the distance between the center of the indentation and the edge of the object to be measured should not be less than 5mm.
After use, the impact body should be loosened.
The use of various lubricants is strictly prohibited in the impact device.
Packing
| No. | Product Name | Quantity | Unit |
|---|---|---|---|
| 1 | Leeb Hardness Tester | 1 | Set |
| 2 | USB Data Cable | 1 | pcs |
| 3 | Nylon Brush | 1 | pcs |
| 4 | Small Support Ring | 1 | pcs |
| 5 | User Manual | 1 | pcs |
| 6 | Calibration Report | 1 | pcs |
| 7 | Certificate / Warranty Card | 1 | pcs |
FAQ
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What is the thinnest thickness a durometer can measure and what is the thinnest thickness after coupling?
Leeb hardness tester is only suitable for large and heavy workpieces, small and thin parts must be coupled to a solid support for testing; D-type impact device is measured by the minimum mass of 5kg, the minimum thickness of 25mm, if the weight or thickness does not meet the requirements, must be coupled to a solid support for testing, coupled to the minimum thickness of the measured object is 3mm.