Semi-trailers are the major components of Australia’s transport and logistics industry. They provide clientele with versatile solutions for shifting merchandise across great distances. Consequently, both single-axled and double-axled trailers serve their respective advantageous and limiting applications. However, knowing their exact differences will put you in better shape to handle your particular choice of a single-axled vs. a double-axled trailer.

What is a Single Axle Semi-Trailer?  

The single-axle semi-trailer has one set of wheels on the rear, since the axle connects both wheels on each side. With their compactness and lightweight nature, these trailers have minimal service costs, making them suitable for covering small distances with less weight and turning radius, perfect for cities or narrow streets.

Single axle semi-trailer characteristics:

  • Lightweight and fuel-efficient.
  • It is easier to manoeuvrer in restricted spaces.
  • Lower upfront and maintenance costs.
  • Lighter loads are limited due to reduced weight capacity.

Businesses emphasising flexibility, cost savings, and shorter trips above heavy freight are best suited for single-axle trailers. 

What is a Double-Axle Semi-Trailer?  

A tandem or double-axle semi-trailer is fitted with two pairs of rear wheels. A heavy-duty trailer model, due to solid construction and feel, is ideal especially for industries where the movement of bulky and heavy products occur more frequently.

Some of the salient features of double-axle semi-trailers are:

  • Higher load capacity for heavy goods.
  • Improved stability and safety even on uneven ground.
  • Greater durability for long-distance hauls.
  • Slightly higher fuel consumption due to their weight.

This heavy-duty trailer is ideal for sectors like agriculture, mining, and construction.  

Single-Axle vs. Double-Axle Semi-Trailers – Key Differences:  

While common in transporting goods, both semi-trailers have unique characteristics. A quick comparison reveals their differences:

 

  • Load Capacity: Single-axle trailers are the go-to for the lighter carriages, though the heavier ones require double-axle trailers.   
  • Manoeuvrability: Single-axle trailers can be moved in narrow zones.  
  • Fuel Efficiency: Single-axle trailers can have one of the highest fuel efficiency rates.
  • Durability: Double-axle trailers can last longer with extreme forces exerted on tough terrains, such as rough roads. 
  • Cost: A single-axle trailer is not as costly, and it’s pretty simple to repair them, unlike the double-axle versions. However, the double-axle type will guarantee you more versatility.  

Tips for Choosing the Right Semi-Trailer in Australia  

Choosing a semi-axle trailer depends upon one’s requirements and the nature of the operation. Some of the essential factors to consider include:

  • Payload Requirements: Small weights require a single-axle trailer, while large masses require a twin-axle trailer.
  • Travel Distance: Due to their hardness and good structural features, double-axle trailers are suitable for long-distance transportation services.
  • Road Conditions: Rougher roads necessitate a double-axle trailer.
  • Budget: Double-axle trailers may be cheaper for some businesses in the long run due to decreased maintenance and out-of-pocket costs.
  • Certifications and Reviews: Look for trailers from reputable companies like FWR Australia. These trailers are Australian-made and have great reviews. 

The choice between the single-axle and the double-axle semi-trailers is subject to business needs, operational goals, and the budget available. Single-axle trailers are versatile and inexpensive; however, double-axle trailers stand out for serious heavy haulage.