October 18, 2026

Used Forwarder Buying Guide: Bunks, Bogies, Articulation and Tires

A forwarder looks simple from the road — tractor front, load bunk behind, crane on top — and that visual simplicity is exactly what traps buyers. The expensive parts of a forwarder hide underneath: the articulation joint that flexes ten thousand times a season, bogies that carry sixteen tonnes over stumps, and a tyre bill that can run into five figures. A used forwarder buying guide has to spend its attention where the wear actually lives.

Set your inspection order before you visit a machine: load space and bunks first (they reveal how the machine was worked), then articulation and bogies, then crane and driveline, then tyres — because tyres are the easiest big cost to price exactly. Compare candidates against the forestry and logging equipment listings on Lumber Lookup as you go, and remember the forwarder's working partner gets the same treatment in the used forestry harvester buying guide.

Used Forwarder Buying Guide: Bunks and Load Space

The bunk area records the machine's working life more honestly than its hour meter. Forest Machine Magazine's inspection advice for forwarders is direct: "Look hard at the articulation joint, bogies and load space. Cracks around bunk mounts or repeated repairs in the chassis should be taken seriously." The same magazine's new-versus-used forwarder analysis adds the governing principle for the whole inspection: an immaculate cab proves nothing about the driveline, centre joint or crane, so inspect the expensive areas, not the obvious ones. Work the load space systematically:

Bunk stakes and cross-members. Bent stakes are normal scars; cracked welds at bunk mounts are structural history. One repair is an incident, repeated plating is a pattern.
Headboard and frame rails. Fork and grapple strikes dent headboards, but check the frame rails beneath for twisting or cracking, especially around the crane pedestal and the articulation.
Crane rest and load supports. Wear here shows whether loads were carried seated or bouncing.
Capacity honesty. Single-bunk and double-bunk machines suit different wood lengths; forum operators note that double-bunk capacity comes at a turning cost because rear bogie wheels scrub on tight turns. Buy the bunk layout your wood actually needs, not the biggest on the lot.

Articulation, Bogies and the Driveline

The centre joint is the forwarder's spine. Check for play by rocking the machine and watching the joint, look for weeping seals and worn bushings, and price a joint rebuild into any machine where movement is visible — it is specialised work, not a Saturday job.

Bogies are next. Inspect bogie boxes for cracks and oil leaks, wheel hubs and motors for weeping, and chains/cases for stretch where fitted. On hydrostatic machines, drive response should be clean and predictable: delay, uneven pulling or unusual driveline noise all warrant investigation before money moves rather than after. Test the machine travelling loaded if the seller will allow it — a forwarder's driveline faults overwhelmingly appear under load and at working temperature, which is why trade guidance insists on running from cold and working the machine rather than admiring it parked.

Crane, Cab and the Systems in Between

Work the crane through its full range and slew, loaded if possible. Check slew bearing play, pins and bushes, boom-section wear pads, hoses for chafing and the rotator for slop — the sister guide to this one puts it plainly: "a tired crane can turn an apparent bargain into a sizeable repair bill." In the cab, test everything electrical: measuring and display systems, cameras, lights, air conditioning and controls. Electrical faults on older forwarders consume workshop hours disproportionately, and every dead function is a negotiation line if you still want the machine.

Size Class: Buy the Capacity Your Wood Needs

Forwarders are built in clear size classes, and buying the wrong class is a quiet, expensive error in both directions. Compact machines in roughly the 8–10-tonne load class suit thinning, small lots and sensitive ground; mid-size machines in the 12–15-tonne class are the general-purpose clearfell standard most contractors run; the largest 18–20-tonne-plus machines earn only where big wood, long extraction distances and high daily volume keep their capacity full. An oversized forwarder on small wood burns fuel and ground pressure for nothing, while an undersized one on production clearfell dies young under constant overload — which is also exactly the history you are trying to detect in a used machine. Check the seller's story against the machine's class and condition: a small-class forwarder with a shattered bunk area and tired joint has been doing a big machine's work, and its price should reflect the life that consumed.

Six-wheel and eight-wheel layouts split along the same logic: eight wheels spread load and improve flotation and ride on soft ground, six wheels keep the machine shorter, tighter-turning and cheaper to tyre. Neither is better in the abstract — match the layout to your ground and your wood, then inspect the specific bogies in front of you.

Used Forwarder Buying Guide: Tires, the Five-Figure Line Item

Tyres deserve their own section because they are the used-forwarder cost buyers most often misjudge. Forestry tyres are not truck tyres: a set of quality 600- or 710-series flotation tyres, worn or mismatched, changes the machine's ground pressure, traction and site impact as well as its purchase economics. The inspection rule from the trade press is blunt — "tyres are a major cost and should be priced accordingly. A machine wearing part-worn, mismatched or damaged tyres is not a minor issue."

Check size and pattern match across positions, sidewall cuts and repairs, remaining tread against the ground you work (wet lowland work needs flotation a dry-site machine can skip), and whether band tracks or chains are included and serviceable — they are valuable equipment in their own right, and their absence on a machine that needs them is a real cost. Fold the tyre verdict into your offer in writing: a forwarder needing a full set is a cheaper machine by exactly that amount, whatever the asking price says.

Closing the Deal

Finally, verify the transport practicalities before signing: overall width and weight, low-loader compatibility, and whether the machine's legal specification — guarding, lighting, fire suppression — suits your contracts. Agree in writing what travels with the machine: spare tyre, band tracks or chains, grapple size fitted, manuals and any measuring-system calibration records. Used forwarders change hands at yards, auctions and farm gates, and the small items left behind are disproportionately expensive to replace one by one. Then handle the paperwork side with the same rigour as the mechanical side; our used skidder buying guide covers the hours/records/parts-support questions that apply across every used forestry machine class.

When you are ready to shop with the checklist in hand, browse the forestry and logging equipment listings, check transportation equipment if your operation also needs its own haulage, and list your outgoing machine on the sell page. A used forwarder bought on bunks, bogies and tyres rather than paint is the quiet workhorse of a logging operation for a decade — which is precisely why this used forwarder buying guide treats the unglamorous parts as the whole point of the purchase.