Linshang LS252D for Forgings, Shafts and Large Metal Components Hardness Testing Malaysia
Linshang LS252D for Forgings, Shafts and Large Metal Components Hardness Testing Malaysia
Large metal components create one of the strongest use cases for portable hardness testing.
A small metal sample can usually be brought to a laboratory. A large forging, heavy shaft, industrial roller or machinery component may be much more difficult to move.
The Linshang LS252D Leeb Hardness Tester is designed for portable hardness measurement of suitable metallic workpieces, making it particularly useful when the component is large, heavy, rigid or difficult to transport.
For Malaysian manufacturers, machine shops, heat-treatment companies and heavy engineering businesses, this can make hardness inspection much more practical.
Why Are Large Components Different?
Consider a steel forging weighing 800 kg.
If hardness inspection requires moving the complete component to a testing laboratory, the process may involve:
Forklift or crane handling
Additional manpower
Transportation
Production scheduling
Component repositioning
Additional downtime
In some cases, the conventional hardness tester may not even have enough physical capacity to accommodate the component.
Portable Leeb hardness testing approaches the problem differently:
Instead of moving the workpiece to the hardness tester, move the hardness tester to the workpiece.
What Is the Linshang LS252D?
The Linshang LS252D is a compact portable hardness tester with an integrated D-type impact device.
It uses the Leeb rebound hardness testing principle and supports hardness scales including:
HL
HV
HB
HS
HRA
HRB
HRC
This allows users to perform portable Leeb measurements while viewing hardness values in several commonly used scales where the applicable material conversion is supported.
Why Leeb Testing Is Suitable for Heavy Workpieces
Leeb hardness testing uses an impact-and-rebound measurement principle.
The stability of the workpiece is therefore important.
A large, heavy and rigid metal component provides a much more stable impact condition than a small loose piece of metal.
This is why applications involving:
Heavy forgings
Large shafts
Industrial rollers
Large gears
Molds
Dies
Machine components
are particularly relevant when considering a portable Leeb hardness tester.
Application 1: Large Forgings
Forged components are widely used in heavy engineering because of their mechanical properties.
Depending on the application, forgings may undergo heat treatment before final machining or installation.
Hardness testing may be used as part of:
Incoming inspection
Heat-treatment verification
Production QA/QC
Final inspection
Repair evaluation
Large forgings can be difficult to position on conventional hardness testing machines.
The LS252D can instead be brought directly to suitable measurement locations on the forging.
Application 2: Heavy Steel Shafts
Large shafts are common in industrial machinery.
Applications may include:
Manufacturing equipment
Palm oil machinery
Material handling systems
Marine equipment
Heavy machinery
Steel processing equipment
Production lines
Hardness may be checked after manufacturing, heat treatment or repair.
For a heavy shaft, portable testing can reduce the need for unnecessary handling.
Application 3: Industrial Rollers
Rollers used in manufacturing and processing equipment may be exposed to continuous contact and wear.
Hardness can be one of the parameters evaluated during:
Manufacturing
Refurbishment
Repair
Preventive maintenance
Portable measurement allows suitable roller surfaces to be checked without transporting the entire component to a laboratory.
Application 4: Large Gears
Large gears can present significant handling challenges.
Depending on the component geometry and applicable procedure, the LS252D can be used to measure suitable locations.
However, users should pay attention to:
Curvature
Tooth geometry
Measurement location
Surface condition
Component stability
Not every point on a gear is equally suitable for Leeb hardness testing.
Application 5: Heavy Machinery Components
Industrial equipment can contain many large metallic components that are difficult to remove.
For appropriate applications, portable hardness testing can assist maintenance and QA/QC teams in performing measurements directly at the equipment location.
This is particularly valuable when removing the component would create significant downtime.
Hardness Inspection After Heat Treatment
Large forgings and shafts are often heat treated to achieve specific mechanical properties.
After treatment, hardness may be checked at multiple locations.
For example:
Measurement LocationResultPosition A611 HLPosition B615 HLPosition C609 HLPosition D613 HLPosition E610 HL
A group of consistent measurements can provide useful information about the tested areas.
If one location repeatedly produces a significantly different result, further investigation may be required.
Checking Hardness Uniformity
One of the advantages of portable testing is the ability to move around a large component.
Instead of checking only one location, engineers can measure several suitable areas.
This can help investigate whether hardness is reasonably consistent across the selected test points.
Potential differences may be related to:
Heat-treatment variation
Local material condition
Surface condition
Previous repair
Manufacturing process
Testing technique
Portable measurement makes this type of comparison convenient.
Surface Preparation on Forgings
Forged components may have surfaces containing:
Oxide scale
Rust
Roughness
Oil
Dirt
Heat-treatment residue
These conditions can affect Leeb rebound measurements.
The selected test area should therefore be appropriately prepared according to the testing procedure.
Do not simply measure directly on heavy scale and assume the displayed value represents the base metal hardness.
Surface Preparation on Shafts
Finished shafts may have much smoother surfaces than raw forgings, but other factors still need attention.
Check for:
Oil
Grease
Rust
Coating
Surface damage
Select a suitable measurement area and ensure stable contact between the tester and workpiece.
Curvature Matters on Shafts and Rollers
A large cylindrical component is not the same as a flat steel block.
The support ring must sit appropriately on the test surface.
When measuring shafts or rollers, consider the component diameter and curvature.
For certain applications, suitable support accessories may be required.
Can LS252D Test a Small Shaft?
Possibly, but small shafts require more careful evaluation.
A small component introduces two challenges:
Low mass + Curved surface
If the shaft moves or vibrates during impact, measurement reliability may be affected.
For very small shafts or precision components, another hardness testing method may be preferable.
HRC Measurement on Large Steel Components
Many hardened steel components have specifications expressed in HRC.
The LS252D supports HRC conversion.
This is convenient for field and production checks, but users should remember:
The LS252D performs Leeb rebound testing and converts the measurement to HRC.
It does not perform a direct Rockwell C indentation test.
If direct Rockwell testing is specifically required by a standard or customer specification, the appropriate Rockwell method should be used.
Automatic Impact Direction Compensation
Large components cannot always be rotated into an ideal position.
A technician may need to test:
Top surfaces
Side surfaces
Vertical surfaces
Different accessible orientations
The LS252D features automatic impact direction compensation, making it more convenient for field and large-component inspection.
Portable Hardness Testing Can Reduce Handling
For heavy components, the cost of testing is not only the cost of the instrument.
Handling can also involve:
Crane operation
Forklift use
Transportation
Labour
Production interruption
Repositioning
If hardness can be appropriately measured at the component location, some of these activities may be reduced.
This is one reason portable hardness testers are particularly valuable in heavy engineering environments.
Who Can Benefit From the LS252D?
Potential users include:
Forging manufacturers
Steel processing companies
Heat treatment companies
Heavy engineering companies
Machine shops
Machinery manufacturers
Palm oil machinery companies
Industrial maintenance contractors
QA/QC departments
Third-party inspection teams
Before Testing a Large Component
Check the following:
Material
Component size
Thickness
Approximate weight
Surface condition
Surface geometry
Required hardness scale
Expected hardness
Measurement locations
Applicable testing standard
Even though large workpieces are strong candidates for Leeb testing, correct test preparation remains essential.
Linshang LS252D for Heavy Engineering Malaysia
The Linshang LS252D Leeb Hardness Tester is particularly relevant where hardness inspection involves large metallic components that are difficult to move.
For heavy forgings, shafts, rollers, molds, dies and machinery components, the ability to carry the tester directly to the workpiece can simplify QA/QC and maintenance inspection.
For Malaysian heavy engineering and manufacturing companies, portable hardness testing can therefore provide an efficient bridge between the production floor and conventional laboratory testing.
Contact MTM Precision
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia
🌐 Website: www.mtmpre.com.my
📧 Email: mtmpre@yahoo.com
📱 WhatsApp: +6016-660 7346
Contact MTM Precision for Linshang LS252D Leeb Hardness Tester, forging hardness testing, shaft hardness testing and portable hardness testing solutions in Malaysia.
12 Aug 2026
