How to Ship a Log Loader (Knuckleboom Loader): Dimensions, Trailers & Logistics
Log loaders and knuckleboom loaders are specialized forestry and logging machines used to sort, stack, and load logs at landing sites, sawmills, and log yards. These machines are characterized by their articulated knuckleboom arm, which can reach and grasp logs with a grapple attachment. Shipping a log loader requires careful attention to boom stowage, grapple securing, and trailer selection — the extended boom and grapple create unique transport challenges compared to standard construction equipment.
Log Loader and Knuckleboom Loader Dimensions and Weight Ranges
Log loaders vary significantly by manufacturer and configuration. They may be purpose-built forestry machines (like Tigercat, John Deere, or Ponsse models) or excavator-based machines with knuckleboom attachments. Key dimensions by class:
| Machine Class | Operating Weight | Transport Length | Width | Height (boom stowed) |
|---|---|---|---|---|
| Small (excavator-based, 20 ton) | 40,000–55,000 lbs | 28–35 ft | 9–11 ft | 11–13 ft |
| Medium (dedicated, 25–30 ton) | 55,000–70,000 lbs | 30–38 ft | 10–12 ft | 12–14 ft |
| Large (dedicated, 35+ ton) | 70,000–90,000 lbs | 35–42 ft | 11–13 ft | 13–15 ft |
Note: The knuckleboom arm and grapple add significant height and length to the machine in the transport configuration. Always measure the machine with the boom in its stowed position before requesting a quote.
Boom Stowage: The Critical Transport Preparation Step
The knuckleboom arm must be properly stowed before transport. Improper boom stowage is the most common cause of loading delays and transport damage for log loaders. Proper stowage procedure:
- Fold the Boom: Fold the knuckleboom arm into its transport position — typically folded back over the machine body with the grapple lowered to the deck or a blocking position.
- Lock the Boom: Engage all boom locks and transport pins. The boom must not be able to unfold or shift during transit.
- Secure the Grapple: The grapple must be secured so it cannot swing or rotate during transit. Use chains or straps to secure the grapple to the boom or machine frame.
- Verify Clearances: After stowing the boom, measure the machine's total height and width. The stowed boom may extend beyond the machine's normal width or height — verify these dimensions before selecting a trailer.
Trailer Selection for Log Loader Transport
- RGN / Lowboy: The standard choice for most log loaders. The low deck height (18–24 inches) is essential for keeping the total load height within manageable permit limits, given the machine's height with the boom stowed. The detachable gooseneck allows the machine to drive on from the front.
- Step Deck: May be suitable for smaller excavator-based log loaders (under 55,000 lbs) if the total height on a step deck stays within legal limits. Verify total height before booking.
- Multi-Axle RGN: Required for larger log loaders (over 70,000 lbs) to distribute weight across more axles and stay within per-axle weight limits.
Permit Requirements for Log Loader Transport
Log loaders almost always require oversize permits due to their width and height:
- Width Permits: Most log loaders are 9–13 ft wide, exceeding the 8.5 ft legal width threshold. Width permits and pilot cars are required in every state.
- Height Permits: Log loaders with the boom stowed are typically 11–15 ft tall on an RGN trailer, requiring height permits in most states.
- Weight Permits: Larger log loaders (70,000–90,000 lbs) exceed the 80,000 lb GVW threshold, requiring overweight permits and multi-axle trailers.
- Pilot Cars: Required for loads over 12 ft wide (one pilot car) or over 14 ft wide (two pilot cars). Most log loaders require at least one pilot car.
Forestry Region Considerations
Log loaders are concentrated in the Pacific Northwest (Oregon, Washington, Idaho), the Southeast (Georgia, Alabama, Mississippi, Arkansas), and the Great Lakes region (Michigan, Wisconsin, Minnesota). These regions have specific considerations for equipment transport:
- Pacific Northwest: Mountain passes, winter weather, and Oregon/Washington weight restrictions on forest roads affect pickup and delivery logistics.
- Southeast: Spring weight restrictions on county roads in timber-producing states affect access to sawmill and log yard locations.
- Great Lakes: Spring thaw restrictions on non-Interstate routes in Michigan, Wisconsin, and Minnesota affect county road access February through May.
Cost Factors for Log Loader Shipping
- Regional moves (under 500 miles): $2,500–$6,000 including RGN trailer, permits, and pilot cars
- Cross-country moves (1,500–2,500 miles): $6,000–$14,000 depending on machine size and permit requirements
Get a Quote for Log Loader Transport
IronHaul Logistics handles log loader and knuckleboom loader transport for forestry companies, sawmills, and equipment dealers throughout the United States. We coordinate permits, pilot cars, and routing for moves in all major timber-producing regions. Call (208) 495-2260, email [email protected], or use our online quote form to get started.
Common questions
What trailer do I need to ship a log loader?
An RGN (Removable Gooseneck) or lowboy trailer is the standard choice for log loader transport. The low deck height keeps total load height manageable, and the detachable gooseneck allows the machine to drive on from the front. Multi-axle RGN trailers are required for larger machines over 70,000 lbs.
How do I stow the boom on a knuckleboom loader for transport?
Fold the knuckleboom arm into its transport position (typically folded back over the machine body), engage all boom locks and transport pins, and secure the grapple with chains or straps so it cannot swing or rotate during transit. Verify total height and width after stowing.
Do I need oversize permits to ship a log loader?
Yes, almost always. Most log loaders are 9–13 ft wide and 11–15 ft tall on an RGN trailer, requiring width and height permits in every state. Larger machines also require overweight permits. Pilot cars are required for loads over 12 ft wide.
How much does it cost to ship a log loader?
Regional moves (under 500 miles) typically cost $2,500–$6,000 including RGN trailer, permits, and pilot cars. Cross-country moves cost $6,000–$14,000 depending on machine size. Contact IronHaul Logistics for a precise quote.
Can IronHaul Logistics pick up a log loader from a remote forest landing or sawmill?
Yes, but remote locations require advance planning. We verify road access, weight limits on forest roads, and site conditions before dispatching a carrier. Contact us at (208) 495-2260 to discuss access requirements for your specific pickup location.
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