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Zhengzhou Nanbei Instrument Equipment Co., Ltd.

Hardness Tester, Leeb Hardness Tester, Integrated Hardness Tester manufacturer / supplier in China, offering Nblm300 Series Integrated Leeb Hardness Tester, Price of Inverted Digital Biological Digital Microscope, Hot Sell China Manufacturer Two Heads Biological Microscope and so on.

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Supplier Homepage Product Physical testing instruments Hardness Tester Nblm300 Series Integrated Leeb Hardness Tester

Nblm300 Series Integrated Leeb Hardness Tester

FOB Price: US $500-900 / Set
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $500-900/ Set
Get Latest Price
Production Capacity: 100set/Sets a Month
Transport Package: 1 Set/Sets
Payment Terms: L/C, T/T, Money Gram, Western Union

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Basic Info
  • Model NO.: NBLM300 series
  • Measuring Range: HLD
  • Standard: ISO
  • Mobility: Portable
  • Rated Voltage: 220V
  • Customized: Non-Customized
  • Display Type: 1.77 Inch OLED with Resolution 160X128 Pixels
  • Accuracy: ±6hld (Hld=800)
  • Measuring Direction: 360 Degree by Manual Setting
  • Calibration: Automatic
  • Size: 150mm*46mm*23mm
  • Specification: ISO
  • HS Code: 9024102000
  • Type: Leeb Hardness Tester
  • Application: Metal
  • Warranty: 1 Year
  • Calibrating Method: Standard Hardness Test Blocks
  • Support Language: English
  • Item: Leeb Hardness Tester
  • Hardness Scale: Hl, Hb, Hrb, HRC, Hv, Hs.
  • Repeatability: <6hld (Hld=800)
  • Resolution: 1hl, 1hv, 1hb, 0.1hrb, 0.1HRC, 0.1hs
  • Memory: 1000 Groups
  • Trademark: NANBEI
  • Origin: Henan, China
Product Description
NBLM300 series Integrated leeb hardness tester
To use the impact body of certain weight impacts against the testing surface under certain spring force, leeb hardness means the ratio of the impacting velocity and the rebounding velocity of the impact body when the spherically test tip is located 1 mm above the testing surface

Operating Principle

The impact body,which is equipped with
 tungsten carbide,impact velocities are
 measured at the 1mm point from the
 work piece in the following way:
the integrated permanent magnet will
produce directly proportional voltage
with the impact velocity.The Leeb hard

-ness values are calculated by the

following formula:




Pen type design, self contained (Impact device and display integrated): no cables.

The unique large-screen OLED color display(1.77-inch OLED Screen)integrated hardness tester in the world  


Interchangeable D impact device (standard) /DL impact device (optional) can achieve one unit dual use; can be used in the restricted area measurement.

With battery compartment, battery can be replaced. Using standard AAA Lithum battery.

Highly accuracy in any impact direction (360°), automatically identify impact direction and gravity compensation

lEasy Operation, the four soft keys above the screen achieve the various functions.


Instrument Specifications

Display Type

1.77 inch OLED with resolution 160x128 pixels

Hardness Scale

HL, HB, HRB, HRC, HV, HS. σb.

Measuring Range 

HLD (200-960) HRC(19.8-68.5) HB(30-651) HV(80-976) HS(26.4-99.5) HRB(13.5-100).σb.(375-2639)

Impact Device

D type impact device (Standard); Optional DL type impact device(Only LM330)


±6HLD (HLD=800), Repeatability <6HLD (HLD=800)

Measuring direction

360 degree by manual setting


Steel& Cast Steel, Stainless Steel, GC IRON, NC IRON, Cast Aluminum alloy, Macht metal, 
Copper-tin alloy, Brass, Forged Steel


1HL, 1HV, 1HB, 0.1HRB, 0.1HRC, 0.1HS




English, Chinese


1000 groups ,each group include 6 testing result and 1 average value(Only LM330)


USB port, used for recharging and  data transmission((Only LM330))


LmVIEW Software for transmission, storage, and printing (Only LM330)


AAA Polymer lithium battery ,Capacity of 600 MA/H,voltage:3.7 V, warning under low voltage

Instrument Shut-off

AUTO OFF after 3 minutes of inactivity


-10ºC~ +50ºC

Net Weight

110g with D type impact device,125g with DL type impact device




GB/T 17394-1998, ASTM A956

:Standard delivery:
Main unit(With D type impact device)
HLD value Standard Calibration Block 
DataView software
USB Communication cable
 Small supporting ring
Cleaning brush
 User`s manual
 Optional accessories:
 Impact device DL
 Standard calibration test block
 Standard supporting ring
 Special supporting rings
 Small supporting ring
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