Your Professional Upper Supplier

 

Our goal is to become your true partner in the field of air suspension China. Shandong Paisen Machinery Manufacturing Co., Ltd. is a leading manufacturer specializing in high-precision mechanical parts, hydraulic components, and industrial machinery equipment. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

 

 
  • Heavy-Duty Door Hinge
    Our Heavy-Duty Door Hinges are engineered to withstand the rigorous demands of commercial trailer operations. Designed for durability and smooth operation, these hinges ensure secure and long-lasting performance for all types of trailer...
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  • Container Lock
    Our commercial-grade container locks provide robust protection for semi-trailer cargo doors, offering superior theft prevention and weather resistance. Engineered for the transportation industry, these high-security locks withstand...
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  • Fifth Wheel Kingpin
    Our heavy-duty fifth wheel kingpins form the vital link between your tractor and trailer, engineered to handle the most demanding road conditions. Built for professional trucking operations, these kingpins deliver unmatched reliability...
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  • Side Marker Light
    Our commercial-grade side marker lights provide critical visibility for semi-trailers, ensuring compliance with transportation safety regulations while improving road presence. Designed for professional fleet use, these durable lights...
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  • Reverse Led
    Our Reverse LED Lights provide superior illumination for semi-trailers, ensuring safe maneuvering in low-light conditions. Designed for truck drivers and fleet operators, these high-performance lights enhance visibility during...
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  • Rubber Bumper Block
    Our commercial-grade rubber bumper blocks absorb shock and prevent damage during trailer docking and loading operations. Engineered for long-lasting performance, these resilient bumpers protect both trailers and loading docks from...
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  • Lashing Hook
    Our Lashing Hooks are built to withstand the toughest cargo-securing challenges in the transportation industry. Designed for semi-trailers and heavy-duty trucks, these robust hooks provide reliable tie-down points for straps, chains,...
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  • Ratchet Tie-Down
    Our Ratchet Tie-Down Straps are built for professional truckers and fleet operators who demand reliable cargo control. These heavy-duty straps combine industrial-strength webbing with smooth-operating ratchets to keep loads securely...
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  • Hand Control Valve
    Our heavy-duty hand control valves give drivers complete command over trailer braking systems. Designed for commercial vehicle applications, these reliable valves ensure smooth, responsive braking performance in all operating conditions.
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  • Underbody Toolbox
    Our rugged Underbody Toolbox provides weatherproof storage for tools, chains, and equipment on semi-trailers. Mounted beneath the trailer frame, this durable compartment keeps essential gear protected while maximizing cargo space.
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  • Air Reservoir Tank
    Our Air Reservoir Tanks are essential components for maintaining optimal air pressure in semi-trailer braking systems. Built to withstand harsh road conditions, these durable tanks ensure consistent air supply for safe and efficient...
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Why Choose Us

 

Customized Solutions

We understand that every client's needs are different, so we offer customized services. Our engineers will assist you in selecting suitable components based on your specific requirements and tailor-made design solutions according to your unique operational needs.

Production Equipment

Our company has 2 laser cutting machines, 8 stamping machines, 12 CO2 welding machines, 2 sawing machines, 1 CNC milling machine, 2 automatic welding machines, 2 welding robots, and 1 spray painting production line.

 

Quality Control

Our company strictly controls product quality, with rigorous inspection procedures. We use spectrometers, coordinate measuring machines, and pressure tests to ensure the durability and performance of our products.

Production Market

Our products are well-received in the market and are exported to North America, the Middle East, South Africa, and other countries and regions.

 

 

Air Spring Upper Mounting Plate

 

Types of Upper

The upper produced by our company mainly include the following types:


Rubber Bumper Block
Our commercial-grade rubber bumper blocks absorb shock and prevent damage during trailer docking and loading operations. Engineered for long-lasting performance, these resilient bumpers protect both trailers and loading docks from costly impact damage.
 

Ratchet Tie-Down
Our ratchet tie-down straps are built for professional truckers and fleet operators who demand reliable cargo control. These heavy-duty straps combine industrial-strength webbing with smooth-operating ratchets to keep loads securely fastened, even on rough roads and long hauls.

 

Advantages of Upper
 

Rubber Bumper Block

Rubber bumper block have many advantages, including:
Shock absorption: They act as a cushion, absorbing impact and protecting both the vehicle and the structure from damage during collisions.
Weather-resistant: Made from high-density rubber, they are resistant to water, UV rays, and extreme temperatures, making them suitable for both indoor and outdoor use.
Long-lasting: They are durable and long-lasting, often made from reprocessed rubber, and do not rust or corrode like steel bumpers.
Low maintenance: They are very low maintenance and easy to clean.
Easy to install: They can be installed quickly and easily using bolts or screws on various surfaces like concrete or asphalt.
Flexible: The material's flexibility allows it to conform to slightly uneven surfaces.

Ratchet Tie-Down

Ratchet tie-down have many advantages, including:
Superior security: The ratchet mechanism provides exceptional tension control, keeping even very heavy loads securely fastened during transit, which is crucial for preventing accidents.
High strength: Made from durable, high-strength materials like polyester, these straps are designed for industrial-grade use and can withstand significant force and stress.
Versatility: Ratchet straps can be used for a wide range of applications, from transporting vehicles to securing lumber and other equipment.
Ease of use: The intuitive ratchet system allows for quick and efficient tightening and loosening with minimal effort, saving time compared to other methods.

 

 

Application of Upper

Rubber Bumper Block
Rubber bumper block can be used for a variety of purposes, including: Rubber bumper blocks are used for collision protection, shock absorption, and to prevent damage in various settings like loading docks, parking garages, and industrial areas. They are installed to protect vehicles, buildings, and equipment from impact by absorbing shock and reducing the force of collisions. Other applications include use in home garages for parking, and in industrial or agricultural equipment.
 

Ratchet Tie-Down
Ratchet tie-down can be used for a variety of purposes, including: Ratchet tie-downs are primarily used for securing cargo during transport in various fields like construction, professional moving, and recreational activities. Common applications include securing ATVs, motorcycles, lumber, and kayaks, as well as being used in industrial settings to hold heavy equipment and on flatbed trucks for professional cargo.

Air Spring Upper Mounting Plate

 

Specification of Rubber Bumper Block

 

Material

High-density molded rubber compound

Size Options

6"x6" to 12"x12" (standard sizes)

Thickness

2" to 4" (custom options available)

Mounting

Pre-drilled holes for easy installation

Color

Standard black (other colors optional)

Temperature Range

-40°F to +180°F (-40°C to +82°C)

 

Features of Rubber Bumper Block

 

 

Shock-absorbing design reduces structural stress. Weather-resistant rubber withstands outdoor conditions. Non-marking surface protects painted areas. Slotted drainage prevents water accumulation. Replaceable wear pads for extended service life.

 

Specification of Ratchet Tie-Down

 

Working Load Limit

5,000–10,000 lbs (2,270–4,540 kg)

Webbing Material

High-tensile polyester (UV & abrasion resistant)

Ratchet Mechanism

Zinc-plated steel with ergonomic handle

End Hooks

Forged steel with safety latch (S-hook or flat hook options)

Strap Length

10–30 ft (3–9 m) standard lengths

Width

2–4 inches (5–10 cm)

 

Packing and Shipping of Upper

 

 

Packing

Tray

Shipping

Shipped by road, sea, rail

 

FAQ

Q: What is the difference between a cam buckle and a ratchet tie down?

A: Ratchet straps are ideal for use on low loaders, flatbeds, trucks, vans, and pickup trucks, making them versatile for a wide range of applications. Cam Buckles, on the other hand, are designed for lighter-duty applications where ease of use and convenience are paramount.

Q: What is a rubber bumper block used for?

A: Rubber bumper blocks are used for impact absorption, vibration damping, and equipment protection in vehicles, machinery, loading docks, and industrial facilities.

Q: What materials are rubber bumper blocks made from?

A: They are commonly made from natural rubber, SBR, NR+SBR blends, or recycled rubber, offering good elasticity, wear resistance, and weather durability.

Q: Can rubber bumper blocks be customized?

A: Yes, rubber bumper blocks can be customized in size, shape, hardness (Shore A), color, and with embedded steel plates or mounting holes according to application needs.

Q: Are rubber bumper blocks resistant to oil and weather?

A: Standard rubber offers good weather resistance, while oil-resistant versions can be produced using NBR or special rubber compounds for harsh environments.

Q: How do you install a rubber bumper block?

A: Most rubber bumper blocks are installed by bolting, welding with a steel base, or direct surface mounting, depending on the application and load requirements.

We're well-known as one of the leading upper manufacturers and suppliers in China. Our factory offers high quality upper made in China with competitive price. Welcome to contact us for quotation.

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