Three-Axle Log Transport Flatbed Semi-Trailer – Forestry-Grade Heavy Hauler

Engineered for the world‘s toughest timber trails with concentrated-load chassis and multi-bunk log securement

Product Overview

Prime Mover Industries introduces its Three-Axle Log Transport Flatbed Semi-Trailer – a purpose-built solution for the global forestry and timber industry. Unlike general-purpose flatbeds, this trailer is engineered specifically for the unique demands of log transport: concentrated point loads, uneven terrain, off-road extraction routes, and the stringent safety requirements of timber securement regulations.

Designed to handle 30 to 40 tons of timber per load, this tri-axle flatbed is the workhorse of sustainable forestry operations – transporting raw logs from logging sites to sawmills, from forests to ports, and from harvest zones to processing facilities. Every aspect of its design, from the reinforced chassis to the multi-bunk log cradle system, is optimized for the concentrated, shifting loads that define timber transport.

The 3-axle configuration distributes weight evenly, reducing tire wear and improving balance – especially crucial for long, heavy logs that could otherwise cause instability.

Key Specifications

Specification	Details
Model	PMI-3A-40T Forestry Flatbed
Overall Length	12,200 – 13,000 mm
Overall Width	2,500 mm
Overall Height (without stakes)	1,500 – 1,550 mm
Number of Axles	3
Axle Capacity	3 × 13 tons
Max. Payload	30,000 – 40,000 kg
Tare Weight	Approx. 7,000 kg
Main Beam Material	Q345B high-strength steel
Main Beam Construction	Automatic submerged-arc welding
Cross Members	Q345B extra-strong design
Flooring	Diamond plate steel
King Pin	JOST, 2″ (50mm) or 3.5″ (90mm)
Log Securement System	8+ adjustable bunks/bolsters + stake pockets
Landing Gear	28-ton capacity, optional brand
Suspension	Heavy-duty mechanical leaf spring – Air suspension optional
Axle Brand	FUWA or BPW (13-ton)
Tires	11R22.5 or 12R22.5, 12 pcs
Brake System	WABCO dual-line air brake
ABS System	Anti-lock braking system
Electrical System	24V LED lighting
Twist Locks	8–12 ISO retractable (optional)
Certifications	ISO 9001, CCC, ISO/TS16949

Core Design – Built for the Forest, Not the Highway

Concentrated-Load Chassis Engineering

Timber transport presents a unique challenge: logs are point loads, not evenly distributed cargo. A single stack of logs can concentrate immense weight on a small section of the trailer deck. Prime Mover Industries addresses this with a reinforced chassis built from Q345B high-strength steel, featuring original main beams electrically welded with extra-strong cross members. Key structural points are further reinforced to withstand the continuous impact of rough logging roads and the concentrated weight of stacked timber – ensuring structural integrity even in the most demanding operating environments.

The main beams are fabricated using automatic submerged-arc welding processes, delivering superior weld penetration and consistency compared to manual welding. This manufacturing precision translates directly into longer service life and reduced risk of structural fatigue under heavy, repeated loading.

Multi-Bunk Log Securement System

Safety and compliance are paramount in log transport. Regulations require that every vehicle transporting logs lengthwise must be equipped with bunks and chock blocks or stakes that cradle the logs and prevent them from rolling.

Our system includes:

• 8+ adjustable bolsters (bunks) – Heavy-duty transverse supports that cradle each log stack and prevent rolling
• Heavy-duty stake pockets – Integrated along both sides, accommodating removable steel stakes
• Regulatory compliance – Each outside log on the side of a stack touches at least two stakes, meeting FMCSA and equivalent international standards
• Stake storage – Dedicated holder for stakes when not in use

The adjustable bunk design accommodates timber of different lengths and diameters, securing cargo tightly to prevent shifting and damage during transit.

Heavy-Duty Suspension & Axle Configuration

The tri-axle bogie with heavy-duty mechanical leaf spring suspension delivers exceptional ground contact and load distribution – a critical advantage for off-road and forestry operations where terrain is uneven and traction is at a premium.

• FUWA or BPW 13-ton axles – Industry-standard reliability with readily available spare parts
• Mechanical leaf spring suspension – 90mm × 13mm leaves, 10 per pack
• Optional air suspension – Reduces impact on cargo and complies with relevant policies
• Independent stamping steel rigid suspension with tri-axle leaf spring set

Diamond Plate Floor & Durable Finish

The trailer features a diamond plate steel floor, providing superior grip and durability under the heavy impact of log loading and unloading. Every trailer undergoes a comprehensive finishing process:

• Sandblasting before painting for superior surface preparation
• One coat of anti-corrosion primer
• Two finish coats of high-durability paint

Premium Componentry

We equip every log transport trailer with world-class components:

• JOST kingpin and landing gear – the industry standard
• WABCO brake system components – proven reliability in demanding conditions
• FUWA or BPW 13-ton axles
• 12R22.5 or 11R22.5 radial tires – 12 units including spare
• ABS anti-lock braking system for enhanced safety

These premium components ensure easy parts availability, lower maintenance costs, and reduced total cost of ownership over the trailer‘s lifetime.

3-Axle Advantage – Why Three Axles for Timber?

The tri-axle configuration is not arbitrary – it is essential for safe, efficient timber transport:

Feature	Benefit for Log Transport
Weight Distribution	Three axles distribute the 30–40 ton payload evenly, reducing stress on individual components and road surfaces
Off-Road Stability	Enhanced ground contact and balance – critical for uneven forest roads and extraction routes
Reduced Tire Wear	Load spread across 12 tires, extending tire life and reducing operating costs
Braking Performance	WABCO dual-line air brake system across all three axles delivers superior stopping power
Regulatory Compliance	Tri-axle configuration meets weight distribution requirements in most jurisdictions
Concentrated Load Management	Three axles better handle the point-load nature of stacked timber compared to two-axle designs

Why Choose Prime Mover Industries?

Advantage	Benefit
Forestry-Focused Engineering	Purpose-built for concentrated timber loads, not adapted from general freight designs
Reinforced Chassis	Extra-strong cross members and key-point reinforcement for logging road durability
Regulatory Compliance	Built to meet FMCSA and international log securement standards
Premium Components	JOST, WABCO, FUWA/BPW – lower TCO and readily available spare parts
Proven Durability	High-strength Q345B steel with automatic submerged-arc welding
Global Export Track Record	Shipped to forestry operations across 5 continents
Short Lead Times	25–35 days for standard orders
Responsive After-Sales	Technical support and spare parts sourcing
Competitive Pricing	Advanced manufacturing with cost-efficient production

Technical Specifications Summary

Parameter	Value
Length	12,200 – 13,000 mm
Width	2,500 mm
Height (without stakes)	1,500 – 1,550 mm
Tare Weight	~7,000 kg
Max Payload	30,000 – 40,000 kg
Axles	3 × 13T (FUWA/BPW)
Suspension	Mechanical / Air (optional)
Main Beam	Q345B, auto submerged-arc welded
Flooring	Diamond plate steel
King Pin	JOST 2″ or 3.5″
Brake System	WABCO dual-line
Log Securement	8+ adjustable bunks + stake pockets
Tires	11R22.5 / 12R22.5 (12 pcs)
Certifications	ISO 9001, CCC, ISO/TS16949