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The Epic Ancestry of Steel Giants From Primitive Bone Shovels to Hydraulic Titans!

2025-09-03

When a modern excavator effortlessly scoops 5 tons of earth, its steel arm channels not just raw power—but a million generations of human ingenuity in our ancient struggle with the land. Join us as we unveil the legendary ancestors that reshaped our planet's contours!

 

 

Chapter 1: Genesis – Muscles and Levers (4000 BC – 1700 AD)

1.1 The Original "Excavators" – Human Hands

Primitive Era: Clam shells as shovels, animal bones as picks

Egyptian Marvel: 100,000 workers hand-dug the Pyramids of Giza (moving 2.5-ton stones = 1.5 hours of work for a modern 20-ton excavator)

 

1.2 Dawn of Leverage Civilization

Warring States Period : Earliest mechanical digging apparatus

Archimedes' famous boast: Warship-moving experiments demonstrating lever principles

 

Chapter 2: Steam Age – Iron Behemoths in Smoke (1780-1912)

2.1 Game-Changing Milestone

 

1829 Patent: William Otis' steam-powered rail-mounted excavator

 

Efficiency Revolution: Daily output = 200 laborers (still required 6 operators)

 

2.2 Transcontinental Engineering Saga

Panama Canal Project (1881):

 

Note: 30,000 workers died from yellow fever – underscoring machinery's humanitarian value

 

Chapter 3: Internal Combustion Revolution – Awakening of Petroleum Bloodline (1914-1945)

3.1 War-Driven Evolution

 WWI trench-digging demands → Birth of track-mounted gasoline excavators

Key breakthrough: Hydraulic pilot controls replace mechanical linkages (reducing operating force by 90%)

 

3.2 Explosion of Iron Species

 

Model Milestone Modern Descendant

1923 Bucyrus First 360° rotating excavator Caterpillar slewing base

1935 Lorain Hydraulic backhoe patent Komatsu PC backhoe design

Chapter 4: Hydraulic Era – Micron-Level Precision (1948-Present)

4.1 French Genius

1948 Poclain invents fully hydraulic excavator

300% increase in power transmission efficiency

Enabled compound movements (modern machines control 7 cylinders simultaneously)

 

4.2 The Renaissance Philosophy of Used Machinery

At Lianyan Machinery's Refurbishment Center, we rebirth legends:

1950s-era steel arms: Laser-calibrated to 0.05mm valve spool precision

1978 Caterpillar's first hydraulic unit: 40% fuel reduction via electronic upgrades

 

 

The Importance of Buying a Used Excavator .

2025-09-03

When planning a construction project, one of the biggest investments is equipment. Excavators are essential machines for digging, lifting, and earthmoving tasks. However, purchasing a brand-new machine can put a heavy strain on your budget. This is why many contractors and businesses choose to buy a used excavator for sale, as it offers both affordability and reliability.

 

1. Cost-Effective Investment

Buying a used construction excavator is far more affordable than purchasing new. Instead of spending a large sum upfront, you can acquire a reliable second-hand excavator at a fraction of the cost. This means you can use your budget more wisely—whether that’s buying additional equipment, hiring more workers, or expanding your operations.

2. Faster Return on Investment (ROI)

A second-hand excavator pays for itself much faster than a new one. Since your initial cost is lower, your projects start generating profits quickly. This is especially beneficial for small to mid-sized contractors who want to grow without heavy debt.

3. Proven Reliability and Performance

High-quality used excavators are built to last and can perform almost as efficiently as new machines. Many suppliers provide detailed inspection reports, maintenance records, and even limited warranties. When buying from a trusted seller, you can be confident that your excavator is reliable and ready to work.

4. Wide Selection and Quick Availability

The used excavator market offers a broad range of models and sizes, allowing you to find the right machine for your project needs. Unlike new equipment that may require long waiting times, used machinery is often ready for immediate delivery, saving valuable time on urgent projects.

5. Lower Depreciation

Just like cars, new heavy machinery loses value quickly in the first few years. By choosing a used excavator, you avoid the steepest depreciation curve. This also means that if you decide to sell or upgrade in the future, your machine will retain more resale value.

6. Eco-Friendly and Sustainable

Buying a used construction machine helps reduce environmental impact. Instead of manufacturing a brand-new excavator, reusing and extending the life of existing equipment conserves resources and reduces waste. This makes it not only a cost-effective choice but also a responsible one.

used excavator


FAQ: Quality and Payment Considerations for Used Excavators

1. What should I check before buying a used excavator?

When buying a used excavator for sale, always inspect the machine’s engine, hydraulic system, undercarriage, and overall wear. Request a complete maintenance history and ensure there are no leaks, cracks, or unusual noises. A reliable supplier should provide a pre-shipment inspection report.

2. How do I ensure the quality of a second-hand excavator?

To guarantee quality, buy from reputable used excavator suppliers who offer warranties or after-sales service. Check working hours, ask for inspection videos, and confirm the machine has been regularly serviced. A well-maintained used construction excavator can work as efficiently as a new one.

3. What payment methods are safest for used construction machinery?

Always use secure and traceable payment methods such as bank transfer (T/T), letter of credit (L/C), or escrow. Avoid cash payments for large amounts. Ensure the sales contract clearly states the warranty terms, delivery timeline, and after-sales support to protect your investment.

4. Is it safe to buy a used excavator from overseas?

Yes—provided you work with an experienced exporter. Trusted suppliers usually have certifications, verified business licenses, and customer reviews. They also conduct two pre-shipment inspections and offer payment protection options to ensure transaction safety.

5. How can I get the best value when buying used excavators?

Compare machine prices, hours worked, and overall condition. Sometimes a slightly newer affordable used excavator with lower working hours offers better long-term value. Balancing cost and quality ensures you make the smartest purchase.


Final Thoughts

Purchasing a used excavator for sale is not just a way to save money—it’s a strategic business move. From lower costs and faster ROI to proven performance and environmental benefits, a used machine can deliver everything you need for your projects.

By paying attention to quality checks and secure payment methods, you protect your investment and ensure long-term success. With the right supplier, buying a second-hand excavator becomes a safe, reliable, and profitable choice for contractors and construction companies worldwide.

The Secret Behind Excavator Arms' Herculean Strength How Hydraulics Lift 2 Sedans?

2025-09-03

When a 20-ton steel arm effortlessly hoists a loaded pickup truck, it's not just mechanical power at work—but a symphony of hydraulic alchemy. Today we reveal how refurbished excavators maintain their earthmoving might!

 

1. Source of Power: Pascal's Law in Industrial Revolution

"Give me a fulcrum, and I shall move the world" — Archimedes' wisdom finds new expression in hydraulics:

Force = Oil Pressure × Piston Area

 



2. Guardians of Refurbished Power

Time wears steel, but scientific restoration resurrects strength

At our Hefei Refurbishment Center, we subjected a 2008 Komatsu PC200-8 to extreme testing:

 

3. The Art of Strength: Where Power Meets PrecisionThink excavators only deliver brute force? Witness their "mechanical ballet":

 

Surgical Precision

 Cracking eggshells with a breaker hammer (yolk intact)

Achieving millimeter control via proportional solenoid valves

 

Intelligent Power

Pressure sensors preventing overloads in real-time

Cushioning technology eliminating impact shocks

 

4. Buyer's Strength Diagnostic Guide

Three field tests to verify performance:

Lift Endurance Test

Raise rated load to maximum height → Lock controls

Pass standard: <3° arm drop in 10 minutes (measured with inclinometer)

 Compound Motion Challenge

Simultaneously operate boom/stick/swing (trace ∞-shaped path)

Monitor movement fluidity → Listen for pump abnormalities

 

"We restore not just machines, but earthmoving strength you can entrust your projects to."



Under the Scorching Summer Sun Uzbek Clients Test Hyundai 210WVS Wheel Excavator On-Site!

2025-09-03

In August, China is swept by sweltering heatwaves and blazing sunshine. During this intensely hot season, we welcomed a group of guests from afar—a delegation of clients from Uzbekistan. With a clear purpose for their visit, they arrived at the construction machinery base to personally test the Hyundai 210WVS wheel excavator and evaluate its performance and reliability on site.

Hyundai 210WVS Wheel Excavator

A Warm Encounter: A Journey of Cooperation Across the Silk Road

As a key node in the "Belt and Road" initiative, Uzbekistan has seen growing infrastructure development needs in recent years, driving a strong demand for high-performance construction machinery. At the machinery base, the clients were warmly received.

 

On-Site Testing: A Display of Performance Under High Temperatures

The test was arranged at a dedicated proving ground, where the temperature reached 38°C, mimicking typical summer conditions in Uzbekistan. In such a demanding environment, the Hyundai 210WVS wheel excavator faced its "ultimate test."

High Performance Hydraulic Excavator

Once the equipment started, it smoothly performed a series of challenging operations.

 

Precise digging demonstrated its excellent hydraulic control system.

 

Flexible rotation and movement highlighted the advantages of its wheeled chassis.

 

Efficient loading operations showcased its powerful performance.

Heavy Duty Wheel Excavator

Particularly impressive was the equipment’s cooling system, which performed excellently under sustained high temperatures. The engine’s water temperature remained within the normal range, demonstrating outstanding environmental adaptability.

 

Client Feedback: Recognition and Expectations

The on-site test provided the clients with a more intuitive understanding of the Hyundai 210WVS wheel excavator. They expressed, "This visit to China has been highly rewarding. We not only witnessed the outstanding performance of Hyundai’s equipment but also experienced your company’s professionalism and sincerity. The 210WVS fully meets the needs of our infrastructure projects."

 

Preliminary discussions were held regarding future cooperation, with the clients expressing their intention to proceed with bulk purchases and hoping to establish a long-term partnership.

 

Conclusion: Quality Wins Trust, Cooperation Creates the Future

Amid the scorching summer heat, the Hyundai 210WVS wheel excavator spoke with its capabilities and won recognition through its quality. This test not only highlighted the technical advantages of Hyundai’s construction machinery but also built a bridge for cooperation between Chinese and international enterprises. Moving forward, Hyundai will continue to prioritize innovation and customer focus, offering more high-performance and reliable construction machinery products to contribute to global infrastructure development.

Why Customers Choose the Hyundai 220LC-9S Excavator!

2025-09-03

When contractors are looking for a reliable and cost-effective excavator, the Hyundai 220LC-9S often becomes their first choice. This model is well recognized for its stable performance, easy maintenance, and excellent value for money, making it popular in Africa, Asia, and the Middle East.

 

Here are the main reasons why customers continue to choose the Hyundai 220LC-9S:

 

1. Stable and Reliable Performance

The Hyundai 220LC-9S is built to handle demanding work environments such as earthmoving, road building, and mining projects. Its powerful Cummins/Hyundai engine provides consistent digging force, strong lifting capacity, and reliable fuel efficiency. Contractors appreciate its ability to perform steadily even under tough soil and rock conditions.

 

 

 2. Easy Access to Spare Parts

Another key advantage of the Hyundai 220LC-9S is the availability of spare parts. Compared with other brands, Hyundai has a well-established parts supply network. This makes it easy for customers in Africa and beyond** to find replacement parts quickly, reducing downtime and ensuring continuous project progress.

 

3. Comfortable and User-Friendly Cabin

Operator comfort is essential for productivity. The Hyundai 220LC-9S features a spacious cabin with ergonomic controls, adjustable seating, and advanced monitoring systems. These features reduce fatigue and increase efficiency, especially for operators working long shifts.

 

4. Excellent Value for Money

The Hyundai 220LC-9S delivers the perfect balance of affordable purchase cost, low maintenance expenses, and strong resale value. This makes it an ideal investment for contractors looking to expand their fleet with a reliable and durable excavator.

 

Conclusion: A Smart Choice for African Projects

 

The Hyundai 220LC-9S excavator is trusted by contractors worldwide for its reliability, spare parts availability, operator comfort, and overall value. For companies aiming to succeed in African infrastructure and construction projects, it remains one of the best investment choices.

 

Looking for a Hyundai 220LC-9S excavator?

We supply high-quality used Hyundai excavators and other construction machinery, shipped directly to Africa and global markets.

 

Contact us today to get the best price on a Hyundai 220LC-9S and expand your fleet with confidence!

 

high-quality used Hyundai excavators

 

BALLY Water Penetration Tester GT-KC06 – A Complete Guide

2025-09-03
BALLY Water Penetration Tester GT-KC06 – A Complete Guide


Leather is a widely used material, and its waterproof and breathable properties are important indicators for evaluating its quality.


What is the BALLY Water Penetration Tester

Bally Water Resistance Tester is used to determine the water penetration for various shoe upper materials as leather,synthetic leather,cloth etc.cut the specimen,then place it into the machine,immersing the specimen into water and flexing it to measure Penetration index or the based of or improve the materials ,water-proof processing.leather,leather,cloth etc.

Working Principle
A rectangular test specimen is bent partly round, and secured between, two cylindrical clamps so as to form a trough. The trough is then immersed in water and the clamps oscillate at a constant speed so that the specimen is repeatedly flexed. The time taken for water penetration through the test specimen to occur is recorded. The mass of water absorbed by, and transmitted through, the test specimen can also be measured.
BALLY Water Penetration Tester
How to Conduct BALLY Water Penetration Test

Prepare (Step 1 - Step 4)

  • Step 1: adjust the movement stroke required for the test (15%, 10%, 7.5%, 5%). The eccentric must be consistent with the percentage of bit holes.


  • Step 2: Turn on the power and enter the test page.


  • Step 3: Use the jog button [Micro M] on the test page to move the distance between the two fixtures to the maximum position (40mm) and align at the red line.


  • Step 4: Install the sample (75x60mm), the side length 60mm is the direction of 15% compression, and the side length 75mm is the clamping direction of the U-shaped fixture.

Setup (Step 5 - Step 11)

  • Step 5: Insert the electrode and pour the conductive copper spring (17g).


  • Step 6: Lift up the sink with a certain amount of water.


  • Step7:Insert the pin to fix the position of the sink.


  • Step8:the water in the sink should reach the water mark level of the fixture. Note: This is the water level mark on the fixture.


  • Step 9: [Zero Ch] and [Zero Total] are used to clear data.


  • Step 10: Select the station that needs to be worked, [ON] means to open this station, [OFF] means to close this station, only the [ON] state this station can work normally, [OFF] means not working.


  • Step 11: Enter the setting interface, you can set the test stop condition [Stop Mode].



Start test and Result (Step 12 - Step 17)


  • Step 12: Press the Start button, the bally waterproofness tester starts testing.


  • Step 13: [SPD] shows the speed, all four stations are displayed in operation.


  • Step14: [PV] is the set number of times, [CV] is the actual number of times. When the set number is reached, the machine will stop.


  • Step15: Within the set number of times, if the sample leaks, the equipment will automatically stop.


  • Step16: When the set number of times is reached, the equipment will stop automatically.


  • Step17: For example, [CH.4] stops counting, which means that the sample is leaking.

Other Water Penetration Test Method

Maeser Water Penetration Tester
Maeser Water Penetration Tester is used to determine the resistance of leather, artical leather, fabric and so on material to water penetration on flexing. The method is mainly applicable to footwear upper outer materials but can be used with any flexible sheet material.

Footwear Water Penetration & Flexing Tester GT-KA02
The Footwear Water Penetration & Flexing Tester can be used to test the dynamic waterproof performance of different kinds of finished shoes.


Circular Rubbing Colour Fastness Tester GT-KC52 Benefits, Applications, and Buying Guide

2025-09-03

Circular Rubbing Colour Fastness Tester GT-KC52: Features, Operation, and Buying Guide

If you’ve been in manufacturing, then you may have heard of how important colour fastness is. Whether a product’s colour can withstand friction damage affects its quality and brand reputation. In this process, an accurate and reliable testing instrument is key.

But why do you need the GT-KC52 Circular Friction Colour Fastness Tester?


Let’s delve in to answer your whys.


Circular rub fastness tester


What is the Circular Rubbing Colour Fastness Tester GT-KC52

This Rubbing Colour Fastness Tester is used for assess colored materials friction damage and surface color transfer. It is suitable test the upper materials, such as leather, plastics and fabric etc.

Under constant pressure condition, rubbing can be carried out in dry or wet circle wool felt, the machine will stop when the preset rub count has bees reached. Fastness can be judged by the effect on the sample material or the transfer of color to the rubbing pad and assessed by reference to a standard gray scale.


Rubbing Colour Fastness Tester


Features of Rubbing Colour Fastness Tester

1. Rub fastness tester: test methods: dry rubbing, wet rubbing, perspiration rubbing, alcohol rubbing, organic liquids rubbing. (The probational liquid need to be prepared by customers)
2. The counter can pre-determined test counts and show actual test count. The machine will stop when the preset count has been reached.
3. Memory function: when preset count has not been reached, if to stop test by manual, the current number of test will be saved until to clear it to zero or continue testing; if to shutdown and restart the machine, the current data will be clear to zero, the preset count would be the value of last set.
4. Rotary Rubbing Fastness Tester: according to different requirements of testing, can be applied to correspondent load.

How to Operate the Rotary Rubbing Fastness Tester


Acceptance
Inspection accessories (according to order): Square iron block (dry rubbing test after organic solvent is moistened from the back), round aluminum block (help to cool sample during dry rub test), weight.

Adjust the level of the machine according to the level.
Confirm the power supply and connect it. Turn on the power switch and emergency stop switch.
Click "English" to enter the test interface.
Click "Micro" to check if the machine is working properly.
Make sure the friction head is lifting and lowering normally without any jamming.

Dry rub test operation
Install the wool felt: Lift the fixture and install the wool felt on it.
Place the specimen test side up and lower the fixture.
Install the weights.

Parameter settings:
Test times setting: Click "English", click "SETTING" to enter the parameter interface,
there are "Counter" and "Timer" modes, select "Counter" mode, click to set the number of times 64.
Speed set: 150 ± 5r/min.
Click "TEST" to return to the test interface, click "Zero" to clear, click "TEST" to start test.

For specimens with low melting or softening temperature coatings on the surface during testing, the machine should be stopped periodically to avoid heat damage.
A round aluminum block was placed over the area where the specimen was rubbed, and the specimen was placed on the circular aluminum block and allowed to sit for 30 seconds to help remove the heat before the test was continued.

When the testing cycles is reached, it will stop automatically. Lift up the fixture, remove the specimen and observe.

Comprehensive Testing of Insole Materials Thickness, Flexing Index, Abrasion, and Water Absorption/Desorption

2025-09-03

Comprehensive Testing of Insole Materials: Thickness, Flexing Index, Abrasion, and Water Absorption/Desorption

Insoles are a critical component in footwear that directly contacts the foot, providing comfort, support, and cushioning. To ensure the comfort, safety, and durability of insoles, a series of tests must be conducted.


Testing Items

The testing items for insoles primarily include the following aspects:

1. Thickness (mm)
The thickness of insoles directly affect their cushioning effect and support performance.

Test apparatus:
Thickness Gauge ( Leather ) GT-KD07
The thickness gauge is used to measure the thickness of vulcanized rubber and leather products. Clamp specimen between up and down parallel round plates. The pointed graduation is the thickness.

Standards:
IS 15298 (Part 1)
BS-903-A38, ISO-4648, AASTMD1813, ISO 2589, SATRA TM48
Thickness Gauge ( Leather ) GT-KD07
2. Flexing index (Only applicable for cellulose board)
Evaluate the durability and fatigue performance of insole materials or products under repeated bending and flexing conditions. Simulate the usage conditions of insoles under repeated bending conditions to test their fold resistance. Insoles with good fold resistance are less likely to break or deform during prolonged use.

Test apparatus:
Fibre Board Flexing Tester GT-KB07
Fibre Board Flexing Tester is used to determine flex test for shoe insole fiberboard and applicable for common leather shoes and sneaker insole fiberboard, but not for toe cap, counter-heel, semi-back and special leather shoes and sneaker insole fiberboard.

Standards:
Annex ‘F’

QB/T 1472, BS 5131: 4.2, SATRA TM3

Fibre Board Flexing Tester GT-KB07

Temperature and Humidity Climatic Test Chamber GT-C52
Temperature Humidity Test Chamber is for conditioning of samples prior to testing. It also can be used for a variety of materials of high - low temperature alternating test. The test temperature, humidity, time can be programmed. Provides conditions of temperature form -40degree to +150degree and of humidity form 20% to 98

Standards of climatic test chamber:
CNS, ISO, JIS, ASTM, DIN, BS, IEC, NACE, UL,MIL
Temperature and Humidity Climatic Test Chamber GT-C52
3. Abrasion Resistance (400 cycles)
Evaluate the wear resistance of the insole through abrasion tests to ensure it does not wear out or damage quickly after prolonged use.

Test apparatus:
IULTCS & Veslic Leather Abrasion Tester GT-KC01-1
This IULTCS & Veslic Leather Abrasion Tester is used for color fastness testing of leather, plastic and textile. Under the specified pressure, let white wool felt to do reciprocating abrasion to the surface of dye sample. After a specified count, to assess the color fastness of sample by checking the color change and fading of sample and the discoloration of white wool felt. Rubbing Fastness Tester can be used for dry abrasion testing and wet abrasion test.

Standards:
cl. 7.3.2.1 IS 15298 part 1
DIN 4843, ISO 11640, SATRA PM 173, AS/NZS 2210.2 section7.3
QB/T 2537, GB/T 20991 section 7.3, ISO 20868,
EN ISO20344 section 7.3, ISO 17700 Method A, GE-29
IULTCS & Veslic Leather Abrasion Tester GT-KC01-1
4. Water Absorption, mg/cm2 and Water Desorption, percent
Test the moisture absorption properties of the insole material to ensure it remains dry and comfortable during use. This is typically assessed through Water Absorption and Water Desorption tests.

Test apparatus:
Insole / Insock Absorption and Desorption Tester GT-KC07
This Insole / Insock Absorption And Desorption Tester is used to determine the water absorption and desorption of insole and insock for various shoes. The specimen, placed onto a wet base plate, is submitted to repeated flexing during under a given pressure (in the same manner as the insole of a shoe during working).

Standards
EN ISO 20344 section 7.2 , GB/T 20991 section 7.2
EN ISO 20347 section 5.7.3   AS/NZS 2210.2 section 7.2
EN 12746, ISO 22649, SATRA TM220, BS 3144 section 22
ISO5404, cl. 7.2.2 of IS 15298 part 1

Insole / Insock Absorption and Desorption Tester GT-KC07

The quality and performance of insoles directly affect wearing comfort and foot health. Through comprehensive insole material testing, the safety, comfort, and durability of insoles during use can be ensured.

What to Look for When Choosing Metal Stamping Parts in 2025

2025-09-03

As manufacturing continues to evolve in 2025, the demand for precision, durability, and cost-efficiency in Metal Stamping Parts has never been higher. From automotive to electronics and consumer goods, metal stamping remains a cornerstone of modern production. But with so many options on the market, what should businesses look for when sourcing stamped components this year?


Material Quality Matters

The performance of Metal Stamping Parts largely depends on the material used. SGCC, for example, is widely recognized for its excellent corrosion resistance and strength. Choosing SGCC Metal Stamping Parts ensures longer product lifespans, reduced maintenance, and improved reliability—key factors for industries where durability is non-negotiable. In 2025, sustainability also plays a role, with more buyers demanding eco-friendly materials without compromising quality.


Precision and Design Capabilities

Modern applications require highly precise shapes and complex geometries. Manufacturers that provide advanced tooling and CNC-integrated stamping can deliver components with tighter tolerances and consistent accuracy. Whether for structural support, enclosures, or intricate fittings, having reliable Metal Stamping Support helps brands bring innovative designs to life while maintaining production efficiency.


Supplier Reliability and Service

Beyond the parts themselves, partnering with the right supplier is crucial. Delivery timelines, customization capabilities, and after-sales support can make or break a project. Look for suppliers that combine technical expertise with responsive customer service to ensure smooth collaboration and reliable outcomes.

Metal Stamping Parts Factory


Why Choose Jiaxin Metal Stamping Parts?

When it comes to quality and service, Jiaxin Metal Stamping Parts stand out in the global market. Jiaxin provides not only top-grade SGCC Metal Stamping Parts but also customized solutions tailored to diverse industries. With advanced equipment, strict quality control, and a skilled engineering team, Jiaxin ensures every stamped component meets international standards.


What truly sets Jiaxin apart is its commitment to customer partnerships—offering fast lead times, flexible OEM/ODM services, and technical support that goes beyond standard supply. For businesses looking to secure dependable Metal Stamping Support in 2025, Jiaxin remains a trusted choice.


Choose Jiaxin for precision, reliability, and service that drives your success forward.

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