86252DC Leeb Hardness Tester
A Compact, Upgraded Model Featuring an Ultra-Short Impact Device (DC)
Equipped with a spring-loaded mechanism and a precision loading stick
Dual-coil technology for exceptional measurement precision
Impressive accuracy: ±6 HL
The 86252DC is a next-generation, pocket-sized metal hardness tester that combines the impact device and control unit in a single, compact form. Small enough to fit in your hand or pocket, it leverages advanced dual-coil technology to deliver outstanding accuracy (±6 HL) and reliable repeatability (6 HL). The built-in orientation sensors automatically adjust for measurement errors caused by various impact angles, ensuring consistent, precise results. The device features a crisp OLED display and is ideal for use in tight spaces—such as holes, cylindrical surfaces, or within assembled machinery. It charges via USB and offers a user-friendly recalibration function.
Application
The 86252DC Leeb Hardness Tester is suitable for testing the hardness of various metals, including:
Steel and cast steel
Alloy and stainless steel
Gray and ductile cast iron
Cast aluminum alloys
Copper-zinc and copper-tin alloys
Pure copper and forged steel
Its compact size and built-in DC impact device make it perfect for confined areas such as holes and cylindrical parts, or for conducting internal measurements on assembled equipment.
Parameters
| Parameters | Value |
|---|---|
| Probe | Impact device DC |
| 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 |
| Power Supply | Rechargeable lithium battery 3.7V@250mAh, full charge for over 5000 continuous measurements |
| Charging Port | USB(Type-C) |
| Size | 88 * 34 * 24 mm |
| Weight | 48g |
| Working Temperature Range | -10~50℃，0~85%RH（no condensation） |
| Storage Temperature Range | -10~60℃，0~85%RH（no condensation） |
Features
Ultra-Compact and Portable
Similar in size to a lipstick tube, the 86252DC is highly portable and easy to operate, making it an ideal tool for quick, on-the-go hardness testing.
High Precision with Patented Dual-Coil Technology
Dual-coil technology enables superior measurement accuracy and excellent repeatability, delivering reliable results every time.
Built-In Direction Sensor for Multi-Angle Measurements
With an integrated orientation sensor, the device automatically compensates for angle-based measurement errors, allowing accurate readings regardless of the testing direction.
Versatile Material Compatibility
Preloaded with 10 types of metal materials—including steel, tool steel, stainless steel, and grey cast iron—the tester is ready for a broad range of industrial and field applications.
Durable Tungsten Carbide Impact Device
The DC impact device is constructed with Tungsten carbide, known for its extreme hardness—second only to diamond.
Multiple Hardness Scale Conversions
Easily convert between Leeb (HL), Vickers (HV), Brinell (HB), Shore (HS), and Rockwell (HRA, HRB, HRC) hardness scales.
Convenient USB Charging
Powered by a rechargeable lithium battery, the tester can be charged quickly and easily using any USB port.
User-Friendly Calibration
The device allows for manual calibration using standard reference parts, enabling users to minimize error and maintain accuracy over time.
Innovation
An ultra-portable and intelligent Leeb DC probe with a sleek, user-friendly interface.
Efficiency
Keep this small tester in your pocket for seamless, efficient workflows on-site or in the lab.
Economic
The device comes with a standard Leeb hardness test block, saving you money on future test block replacements.
Qualifications and Standards
86252DC 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
oading: Take down the loading stick and push the impact body forward until it to be locked
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.
Measurement
Loading
Positioning
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 | Push Rod | 1 | pcs |
| 3 | USB Data Cable | 1 | pcs |
| 4 | Nylon Brush | 1 | pcs |
| 5 | Small Support Ring | 1 | pcs |
| 6 | User Manual | 1 | pcs |
| 7 | Calibration Report | 1 | pcs |
| 8 | 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; DC-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.