CIMC Intermodal Equilink Co., Ltd. specializes in the R&D, production and sales of semi-trailers and high-quality trailer parts. With the rapid development of global road logistics, semi-trailers and their supporting parts have become indispensable core equipment in modern transportation.

Compared with traditional single trucks, semi-trailer transport can significantly improve comprehensive economic benefits:

• Transportation efficiency: increase by 30%–50%

• Transportation cost: reduce by 30%–40%

• Fuel consumption: reduce by 20%–30%

We provide a full range of semi-trailer products and matching parts, supporting long-distance logistics, engineering transportation, cold chain, container transport and other scenarios.

What Is a Semi-Trailer?

A semi-trailer is a vehicle without independent power, with its axle located behind the vehicle’s center of gravity (under even load), and connected to the tractor through a traction pin. It relies on the tractor to provide power and bear part of the load.

Semi-Trailer vs. Full Trailer

• Connection: Semi-trailer uses traction pin + fifth wheel; full trailer uses hook & drawbar.

• Axle layout: Semi-trailer usually has single axle group or multi-axle group; full trailer usually has two axles.

• Application: Semi-trailer for long-distance logistics & container transport; full trailer for short-distance factory/port/warehouse handling.

Main Types of Semi-Trailers

1. Dump Semi-Trailer

Equipped with hydraulic lifting system for automatic unloading.

• Composition: chassis, hydraulic lifting mechanism, power take-off, cargo body

• Application: earthwork, sand, gravel, bulk materials

• Advantage: greatly shorten unloading time, improve transport efficiency, reduce labor cost

• Scene: civil engineering, construction, mining, port logistics

2. Van / Grid-Type Semi-Trailer

Closed or grid-type body for packaged cargo, light industrial goods, building materials.

• Body material: high-strength cold-rolled corrugated steel, no-frame structure

• X-shaped bracing: strong load capacity, light dead weight

• Body style: closed, push-pull open, tarpaulin open, liftable roof, wing-open

• Advantage: large loading space, reasonable stress, high safety, meets personalized demand

• Application: household appliances, textiles, grains, boxes, plates, refrigerated goods

Key Component Focus: Leaf Spring (Plate Spring)

Leaf spring is the most widely used elastic & guiding component in semi-trailer suspension systems.

Advantages

• Simple structure, reliable performance

• Low cost, easy maintenance

• Acts as elastic element + guiding device + friction damping

• Transmits force & moment, controls wheel trajectory

Disadvantages

• Only for non-independent suspension

• Relatively heavy weight

• Stiffness affects comfort

• Longitudinal size limits suspension design

• Leaf spring pin may wear after long use

CIMC Equilink Full-Series Trailer Parts

We provide a complete one-stop supply of trailer parts:

• Trailer axle

• Suspension system

• Leaf spring

• Trailer landing gear (support legs)

• Trailer rim

• Brake drum, brake pads

• Air tank

• Wire rope & tensioner

• Spare tire lifter

• Tie rod

• Traction pin

• Relay valve

• And other standard accessories

All parts are strictly manufactured in line with international standards, with stable performance, strong durability, and suitable for various working conditions.

Contact Us

If you need semi-trailers, trailer parts, or product quotations, please contact us:

• Email: info.equilink@cimc.com

• Official website: View full product catalog and latest price

CIMC Equilink – Your professional partner for semi-trailers and high-quality trailer parts.

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