A tunnel boring machine (TBM), also known as a mole or worm, is a specialized piece of tunnel boring equipment designed to excavate round tunnels through soil and rock. I rely on tunnel boring machines for tunnel projects because they feature a spinning cutterhead, a protective shield, and systems that ensure tunnel stability. These machines use hydraulic jacks, conveyor belts, and install tunnel lining as they advance, making the tunneling process safer and more efficient. According to civil engineering resources, the tunnel boring machine is essential for tunnel construction and can operate in various ground conditions. For challenging projects, I often choose a slurry balance tunnel boring machine or a double shield tunnel boring machine. NHI offers a range of advanced tunnel boring equipment, and you can explore their options at www.nhiglobalequip.com. Overall, tunnel boring machines significantly improve the speed, safety, and precision of tunnel excavation.

• Other names for tunnel boring machines include:
  • Mole
  • Worm

TBM Components

Cutterhead & Rotary System

The cutterhead and rotary system help the machine break soil and rock. The cutterhead spins at the front and uses tools to cut material. Hydraulic jacks push against the tunnel walls so the cutterhead can move forward. In hard rock, disc cutters work better. The rotary system controls pressure at the tunnel face. This stops the tunnel from collapsing and keeps workers safe. I check torque and thrust to make sure tunneling goes smoothly.

Tip: The cutterhead’s shape changes for different ground. This helps tunneling stay safe and work well.

Shield & Support

The shield protects the TBM as it moves. A steel frame holds back the ground while the machine goes forward. Hydraulic jacks push the shield ahead to give strength. Right behind the shield, concrete rings support the tunnel walls. This step-by-step support keeps the tunnel strong and stops collapse. The shield’s design changes for different soils. This is important for safe tunneling in soft ground.

Conveyor & Muck Removal

Getting rid of muck is important for nonstop tunneling. Belt conveyors move the dug-up material from the TBM to the surface. These belts work all the time and carry lots of soil or rock. Loaders help move muck to crushers or trucks. Sometimes, safe agents are added to make slurry solid. This makes disposal easier and safer. Machines do most of the work, so fewer workers are needed. This lowers accident risks and makes tunneling safer.

Feature	Description
Belt conveyor systems	Move dug-up material quickly from TBM to surface
Capacity and efficiency	Carry lots of material to keep up with work
Safety and automation	Fewer workers needed and fewer accidents
Customization	Made to fit each jobsite and TBM

Guidance & Control

Guidance is very important for tunneling machines. Laser tools and robots help track where the TBM is underground. Data shows up on a tablet and tells where the cutterhead is. Sensors watch speed, torque, and pressure. Computers use this information to help steer the TBM exactly. This keeps the tunnel on the right path and meets safety rules.

How Tunnel Boring Machines Work

Tunnelling Process

When I start a tunnel project, I follow clear steps. This helps keep everyone safe and makes work faster. Here is how a tunnel boring machine works from start to finish:

1. First, I plan the project. I study the ground and the environment. This helps me pick the right tunnel boring machine.
2. Next, I choose workers and get all the needed tools. This makes sure we have good support and supplies.
3. My team puts the tunnel boring machine together at the site. We check every part before we start digging.
4. The rotary cutting head starts to dig into the ground. As it moves forward, it takes out soil and rock. We call this muck. Conveyor belts carry the muck out of the tunnel.
5. At the same time, I put in concrete lining pieces behind the machine. These pieces hold up the tunnel walls and keep them strong.
6. I set up drains and supports to control water and keep the tunnel safe while digging.
7. After digging is done, I add things like air flow, lights, and phones. This makes the tunnel safe for people to use.
8. Last, I test everything and make sure the tunnel is safe before people or trains use it.

Note: Using earth pressure balance technology helps keep the tunnel face safe. This is very important when digging in soft ground in cities.

Tunnel Lining

While digging, I must put in tunnel lining to keep the tunnel safe. Here is how I do this part of the job:

1. As the tunnel boring machine moves, I use a segment erector to place concrete lining pieces inside the tunnel.
2. These pieces fit together to make a strong ring. Each ring has four to ten pieces. Each piece is shaped to fit just right.
3. I use special lifts to move and place the pieces quickly and safely.
4. When a ring is done, the tunnel boring machine pushes off the last ring to move forward.
5. After putting in the pieces, I fill the space between the lining and the ground with grout. This keeps water out and makes the tunnel strong.

The concrete pieces are made to be very strong and last a long time. I sometimes add special things to the concrete to help it flow and dry faster. For tunnels with tough water, I use extra coatings to protect the lining.

Tip: Putting in tunnel lining while digging makes work faster and safer. It also lowers the chance of the ground falling in, which is a big worry in city tunnels.

Curved Tunnelling

Sometimes, I need to build tunnels that curve to go around things or follow a path. Making curved tunnels with a tunnel boring machine needs careful planning and control. Here is how I do it:

• I use a tunnel boring machine that can bend and follow a curve.
• I change the cutter discs to cut a little more, so the machine can turn.
• For sharp turns, I use smaller tunnel lining rings to fit the curve.
• I watch the machine’s position all the time with sensors and lasers. This helps me keep the tunnel on the right path, even in tight spots.
• I also use special conveyor belts and carts that can work in the small space of a curved tunnel.

This way, I can build tunnels under busy cities without making extra holes or causing big problems above ground. It also keeps the tunnel safe and strong, even if the ground changes.

TBM Advantages

I use tunnel boring machines for many projects because they have many good points:

• Efficiency: Tunnel boring machines let me dig and put in lining at the same time. This makes the work go faster and saves time.
• Safety: The tunnel boring machine protects my team from falling rocks and dirt. Machines and real-time checks lower the chance of accidents. I also use good air flow and fire safety systems to keep workers safe.
• Precision: With lasers and computers, I can guide the tunnel boring machine very accurately. This is important in cities, where I must avoid buildings and pipes.
• Environmental Impact: Tunnel boring machines make less noise, dust, and shaking than old ways of digging. This is better for cities and places that need to stay quiet.
• Adaptability: I can use different tunnel boring machines for different ground, from soft dirt to hard rock. Some machines can even change how they work for mixed ground.
• Cost-Effectiveness for Long Tunnels: Tunnel boring machines cost a lot at first, but they save money on long tunnels. They work faster and need less extra support.

Callout: New ideas, like variable density tunnel boring machines and self-driving features, make tunneling even safer and faster. I now use smart sensors and artificial intelligence to watch the machine and plan repairs.

For over three decades, Xiamen Fengyu Autoparts Co., Ltd. has been a trusted partner in the global automotive aftermarket, specializing in high-performance steering and suspension components. Among our key offerings, center links (also referred to as drag links or cross rods) play an essential role in maintaining steering accuracy and vehicle stability. Designed to serve a wide range of American, Japanese, and European vehicle models, FENGYU’s center links are manufactured to restore—and often enhance—the original driving experience.

 

Superior Engineering for Enhanced Durability

At FENGYU, each center link is constructed to endure the demands of daily driving and extreme road conditions. We begin with high-grade steel alloys, carefully formed and heat-treated to achieve optimal tensile strength and fatigue resistance. Critical components such as the Nissan Cross Rod, Toyota Center Link, and Chevrolet Silverado Cross Rod are engineered to withstand high steering loads and repetitive stress, ensuring long-term alignment integrity.

 

To further extend service life, our center links feature advanced sealing systems. Precision-molded rubber boots, resistant to oil, heat, and abrasion, protect internal ball joints from contamination. This is especially important for models like the Toyota Camry Steering Center Link and Buick Excelle Steering Center Link, which require consistent performance across diverse climates and road surfaces.

 

Wide Vehicle Coverage and OEM-Equivalent Design

FENGYU’s product lineup includes center links and drag links tailored for popular vehicle makes and models, such as:

 

Honda Drag Link and Nissan Cross Rod

Ford Cross Rod and Chevrolet Center Link

Audi Center Link Kit and Volkswagen Drag Link

 

Each component is developed using original equipment specifications, ensuring exact fitment and seamless integration with existing steering systems. Whether your customers drive compact sedans or heavy-duty trucks, our products deliver the precision and compatibility that installers and end-users expect.

 

Customization and Supply Flexibility

Understanding the varied needs of distributors and wholesalers, FENGYU supports OEM and ODM orders with a high degree of flexibility. From custom packaging and private labeling to tailored bolt and bushing specifications, we help you build a branded product line that stands out. With a low minimum order quantity and factory-direct pricing, we make it easy to stock high-quality steering components without overcommitting on inventory.

 

Quality Assured Through Rigorous Validation

Every center link undergoes a multi-stage inspection process, including dimensional checks, torque testing, salt spray corrosion resistance validation, and dynamic load analysis. As an IATF 16949 and ISO 9001 certified manufacturer, FENGYU adheres to internationally recognized quality standards. This ensures that components such as the Volkswagen Drag Link and Ford Cross Rod not only meet but frequently exceed industry expectations for safety and service life.

 

Global Support and Reliable Service

Backed by more than 30 years of manufacturing and export experience, FENGYU provides timely delivery and responsive customer support. We maintain ample stock of popular references, including Toyota Center Link and Chevrolet Center Link models, enabling swift order fulfillment. Our dedicated after-sales team is available to assist with technical queries, returns, or custom requests—ensuring a smooth and professional partnership.

 

Grow Your Steering Portfolio with FENGYU

From the Audi Center Link Kit to the Honda Drag Link, FENGYU offers a comprehensive selection of durable, precision-tested steering components suitable for the world’s most driven vehicles. We don’t just supply parts—we deliver reliability, value, and partnership.

 

Contact us today for a competitive quotation or to request free samples. Let us help you strengthen your catalog with steering solutions engineered to perform.

VST-4 Compact Desktop Vision-Based Counting and Packaging Machine

The VST-4 Compact Desktop Vision-Based Counting and Packaging Machine is designed for high-precision, efficient counting and packaging of small parts in warehouses and manufacturing environments. Its space-saving design and exceptional mobility make it an ideal solution for operations with limited space or requiring frequent repositioning.

Key Features

• High-Accuracy Vision System: Incorporates an industrial-grade vision sensor to ensure precise counting of a wide range of small components, regardless of shape or material.
• Compact & Portable Design: Its streamlined desktop structure allows easy relocation and integration into tight workspaces.
• Extensive Material Compatibility: Capable of handling diverse types of small items such as electronic components, hardware fasteners, and medical parts without requiring tooling changes.
• User-Friendly Operation: Features an intuitive interface with one-touch counting and packaging functions, minimizing training time and reducing operational complexity.
• Rapid Processing: Achieves high-speed counting and packaging, significantly improving throughput in small-batch production and logistics tasks.

Applications
Ideal for use in electronics, precision hardware, medical device manufacturing, and other industries where accurate counting and efficient packaging of small items are critical.

Ideal For

• Warehouses with limited floor space
• Small-batch production lines
• Multi-scenario, flexible counting and packaging requirementsEnhance your operational efficiency and reduce counting errors with the VST-4—a reliable, compact, and intelligent solution for modern small-part management.

Videos

In the world of modern manufacturing, Metal Stamping Parts remain one of the most critical components across industries such as automotive, electronics, and construction. While standard stamped parts provide cost-efficiency and quick availability, more companies in 2025 are leaning toward customization. The debate often centers around which delivers better performance: standard components or Custom Metal Stamping Parts.

Standard vs. Custom: The Key Differences

Standard metal stamping parts are mass-produced with general specifications, making them accessible and budget-friendly. However, when applications demand higher precision, unique geometries, or specialized materials, Custom Metal Stamping Parts clearly take the lead. Customization ensures components fit seamlessly into specific designs, reduce waste, and often enhance performance in demanding environments.

Why Customization Matters in Modern Applications

In industries like electronics or automotive, custom features are no longer optional—they’re essential. A Custom Stamping Terminal, for example, allows for precise connectivity in electrical systems, ensuring safety, durability, and efficiency. By tailoring designs to exact requirements, manufacturers can improve product functionality, extend lifespan, and streamline assembly processes.

Choosing the Right Service Partner

The success of customization depends heavily on the expertise and reliability of the supplier. A trustworthy Custom Metal Stamping Service should combine advanced machinery, experienced engineering teams, and strict quality control to deliver consistent results. Beyond technical capabilities, responsive customer support and the ability to scale production are equally vital in today’s competitive landscape.

Why Choose Jiaxin (Xiamen) Precise Metal Co.,Ltd.?

When it comes to reliable Metal Stamping Parts, Jiaxin (Xiamen) Precise Metal Co.,Ltd. offers both standard and custom solutions that meet international standards. Their expertise in producing Custom Metal Stamping Parts, including Custom Stamping Terminals, makes them a preferred partner for businesses worldwide. What sets Jiaxin apart is not just product quality but also their dedication to service—offering flexible OEM/ODM options, competitive pricing, and fast turnaround times.

For companies seeking precision, durability, and responsive support in 2025, Jiaxin remains the go-to name for metal stamping excellence.

In today’s fast-paced industries, precision and efficiency are key. From skyscrapers to automotive innovations, Metal Stamping Parts play an essential role in ensuring strong, reliable, and cost-effective solutions. This manufacturing process not only enhances production speed but also guarantees consistent quality—making it indispensable in modern building and manufacturing sectors.

One of the biggest advantages of metal stamping lies in its versatility. Whether you’re working with structural components or intricate mechanical pieces, Hardware Stamping Parts deliver the accuracy needed to meet strict design requirements. Their strength and durability allow manufacturers to produce components that withstand daily wear and tear, supporting everything from heavy-duty machinery to consumer electronics.

Materials also matter greatly in stamping applications. For industries that demand both corrosion resistance and long-term performance, 304 SS Stamped Parts are a trusted choice. This stainless steel option offers excellent mechanical properties and ensures that parts remain reliable, even in harsh environments. From architectural structures to industrial equipment, these components provide the balance of strength and endurance required for critical projects.

Choosing the right supplier can make all the difference. With experience, advanced machinery, and a commitment to precision, Jiaxin (Xiamen) Precise Metal Co.,Ltd. Metal Stamping Parts stand out in the market. Beyond high-quality products, Jiaxin also provides tailored solutions, reliable service, and competitive pricing—making them a trusted partner for businesses worldwide.

As a leading producer of automotive components with over three decades of professional experience, FENGYU has solidified its reputation as a trustworthy provider of Control Arms, delivering precision and longevity to the global aftermarket. Specializing in suspension parts, we offer an extensive lineup of Control Arms compatible with 90% of vehicle brands—covering Japanese makes (Toyota, Honda, Lexus, Nissan), American models (Ford, Dodge, Chevrolet, Chrysler), and even European brands like Volvo and BMW. This makes us the preferred choice for Toyota Control Arms, Honda Control Arms, Ford Control Arms, Dodge Control Arms, Chevrolet Silverado Upper Control Arms, Chrysler Control Arms, Lexus Control Arms, and Nissan Control Arms, among others.

​

Engineered for Longevity: Premium Materials & Meticulous Craftsmanship​

At FENGYU, every Control Arm is built to endure the demands of daily driving and harsh road conditions, starting with top-tier materials. Our Control Arms feature high-strength alloy steel frames, ensuring exceptional rigidity to handle the pressure of vehicle weight, off-road bumps, and heavy loads. The integrated bushings—crafted from high-density, wear-resistant rubber—provide essential shock absorption, reducing noise and vibration while preventing metal-on-metal friction that shortens part life.

​

We also prioritize protection against corrosion: each Control Arm undergoes a multi-layer coating process (including zinc plating and anti-rust paint) to shield against road salt, moisture, and debris—critical for maintaining performance in rainy or snowy regions. Hardware such as mounting brackets and bolts are forged from high-tensile steel, guaranteeing a secure fit that won’t loosen over time, whether it’s a Chevrolet Silverado Upper Control Arm or a Lexus Control Arm.

​

Tailored to Your Business: Flexible OEM/ODM Solutions​

Recognizing the varied needs of aftermarket distributors, wholesalers, and importers, FENGYU offers customizable OEM/ODM services for Control Arms to help you build your brand. You can choose from finishes like matte black or silver, add laser-engraved logos or part numbers for easy brand recognition, or opt for personalized packaging—from branded color boxes to custom polybags that align with your marketing strategy.

​

With a low MOQ of 100 units per model, we eliminate the burden of large inventory commitments, making it easy to stock both bestsellers (like Toyota Control Arms and Ford Control Arms) and specialized options (such as Chevrolet Silverado Upper Control Arms). Our factory-direct pricing also ensures you get competitive profit margins, helping you stay ahead in the aftermarket.

​

Quality You Can Rely On: Strict Testing & Global Certifications​

Quality is non-negotiable at FENGYU, and every Control Arm undergoes rigorous testing to meet or exceed OE standards. We start with raw material inspections (verifying the strength of alloy steel), then conduct in-process checks to ensure dimensional accuracy—critical for a perfect fit with each vehicle model. Before shipment, each Control Arm is tested for load-bearing capacity (to confirm it handles vehicle weight safely), bushing flexibility (to ensure smooth movement), and corrosion resistance (to validate long-term durability).

​

Our commitment to quality is backed by IATF 16949 and ISO certifications, meaning every FENGYU Control Arm—whether a Nissan Control Arm or a Chrysler Control Arm—adheres to global quality benchmarks. You can trust that our parts will perform as reliably as original components, keeping end-users safe and comfortable on the road.

​

Supported by Expertise & Responsive After-Sales Service​

We stand behind every Control Arm we produce with a solid warranty and 24/7 after-sales support. If you encounter any issues—whether a fitment concern with a Honda Control Arm or a performance question about a Chevrolet Silverado Upper Control Arm—our team is ready to assist. Simply share photos or videos of the problem, and we’ll provide prompt solutions, including refunds or replacements in your next order.

​

With over 30 years of export experience, we understand the importance of timely delivery. Our ready stock of 100,000+ Control Arms (including hot-selling models like Toyota Control Arms and Ford Control Arms) ensures quick turnaround for urgent orders, while custom OEM/ODM orders are fulfilled within 30–45 days—keeping your inventory flowing and your customers satisfied.

​

Partner with FENGYU for Suspension Excellence​

Whether you need to stock Toyota Control Arms for sedans, Chevrolet Silverado Upper Control Arms for trucks, or Lexus Control Arms for luxury SUVs, FENGYU combines quality, flexibility, and expertise to support your business. We don’t just supply parts—we build long-term partnerships, offering professional guidance to help you curate a product range that meets your market’s unique needs.

​

Looking for a trusted Control Arm supplier? Contact the FENGYU team today to explore our full range, discuss customization options, and get a free quotation. Grow your business with parts built to deliver lasting suspension performance.

Since its establishment, Leitai Filter Equipment Co., Ltd. has been committed to improving industrial filtration and separation in China, and improving the production efficiency of household purification filters and automotive filters.

Under the company's many years of hard work, many years of development research, continuous innovation, and production practices have continuously made a series of achievements in the field of filter manufacturing equipment.

It has created a number of leading industries in the filter equipment industry. In the past, China's production equipment was mainly imported, and now it can be a very advantageous export equipment;

Under the background of China's scientific and technological innovation, for the production of filtration and separation industry, household purification filter and automobile filter in China and the world, Leitai Filter Equipment Co., Ltd. and China Science and Technology have produced countless high efficiency and high Quality production equipment;

In the future, China's filter equipment and Leitai filter equipment will bring more innovations and inventions to the industry, and contribute to the industry's efficient and high-quality production of filter elements and new technological advances.

It contributes to the cost savings of industrial filter and purifier production filter.

 

Bengbu Leitai Filtration Equipment Co., Ltd. has achieved fruitful results today.

Especially in the industrial purification industry, the hepa origami injection molding production line is suitable for the glass fiber paper folding 20-300mm high product, high temperature resistant high efficiency origami production line.

The highest speed in the automotive filtration industry is up to 300%/minutes of knife folding machines.

Roller type high speed folding machine adapted to pp non-woven fabric in air conditioning purification industry.

 

chinafiltermachine Paper Pleating Machine

• Full-auto CNC knife High Speed Paper Folding Production Line G6
• Full-auto CNC High Speed Paper Folding Production Line G5
• Full-auto Knife Paper Pleating Production Line G4
• Full-automatic Mini Knife Paper Folding  Product Line G3
• Full-automatic Mini Knife Paper Folding one-piece Product Line G3 
• Auto Knife Paper Pleating Production Line G2
• Knife Paper Pleating Production Line-G1
• Full-auto Rotary Paper Pleating Machine G2

 

Primary-medium-high Efficiency &HVAC，HEPA,ULPA Air Filters

Full-auto Rotary HEPA Air filter Pleating Mini Production Line

Fold 300mm Depth Full-auto Rotary HEPA Air Filter Pleating  Production Line  

High Temperature Resistance HEPA Air Filter Pleating Machine with Glass Fiber Line Replace the Gluing Line,

Hepa Air Filter Cell Type Pleating Machine

Corrugators Machine

Tow-component Gluing Machine

 

Air Purifiers 、Vacuum Cleaners、Gas Masks

• Auto PP pleating Separate Gluing Production Line G4
• Auto PP pleating Separate Gluing Production Line G3
• Auto PP pleating Separate Gluing Production Line G2
• PP Auto Separate Gluing Machine G3
• PP Auto Separate Gluing Machine G2

Primary-medium-high EfficiencyTest Bench

Primary /Medium Air Filters Test Bench EN779/ EN16890

Air Filters Test  Bench EN1822

Ultra/HEPA Air Filter Test Bench  EN1822 MPPS

 

Spin On Oil&Fuel Filters Full-auto Assembling

• Full-auto High Speed Turntable Seaming Production Line
• Full-auto Shrinking Film Sealing Machine
• Full-auto Two Colors Roll Printing Machine
• Full-auto Turntable Silk Printing Machine

Spin On Oi&Fuel Filters Elements And Auxiliary

• Full-atuo Steel Clipping Machine

Steel Clipping Machine

• Full-auto Spiral Center Tube Making Machine

Sealed Plate Gluing Machine

• Full-auto Turntable Six-station Tapping Machine

 

SNW Automatic Hose Clamp Assembly Machine is the best choice to your company.

What is the advantage of the Automatic Hose Clamp Assembly Machine?

Compared with the traditional manual production method, our production efficiency is higher. The specific performance of high production efficiency is as follows.
1. The xmsinuowei machine can realize automatic feeding. Prepare the materials: strips, housings and screws. They are put into the vibrating loading tray, and the raw materials are produced under the operation of the machine for the next step.
2. The machine can realize the automatic riveting,locking and coiling. Multiple links can be carried out on a production line, which can greatly improve production efficiency.
Please contact us for more info if you have any interest.