ST6D 42 & 246" capacity / Diesel
Now with 2 x diesel engine options, a fast, hungry and powerful 42hp Doosan DPF or a 24hp Kubota naturally aspirated diesel. A wide hopper, robust all steel construction & phenomenal performance all come as standard with the 6D series.
Read more3 Year Warranty as standard
Exactly what it says on the tin. Every New Forst Wood Chipper comes with an absolutely guaranteed, no quibble 3 Year Warranty. It’s all about making your life and job easy and that’s just what the 3 Year Warranty is designed to do. We’ll give you an excellent product and an outstanding warranty to make your purchase decision as straight forward as possible.
Read moreSpecification | |
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Feed Roller Aperture | 6" x 8" (150 x 200mm) |
Feed Roller System | ForstGrip Feed Roller System |
Flywheel System | Open Top Flywheel (640 x 25mm) Twin 8" Blades |
Engine | 42hp Doosan or 24hp Kubota Diesel |
No Stress System | AutoIntelligence No Stress Device |
Feed System | Fully Water & Vibration Proof Touch Pads |
Capacity | 30 Litres |
Noise Level | Lwa 122dB |
Machine Width | 1330mm |
Machine Length | 3610mm |
Machine Height (Chute On) | 2340mm |
Brakes | Fully Braked Chassis & Handbrake |
Weight | 975kg (24HP) 1105kg (42HP) |

42hp or 24hp Engine option
Two engine options. Fast and powerful 42hp Doosan DPF Diesel or 24hp Kubota V1505 naturally aspirated Diesel.

Robust construction
No compromise in quality and strength - all fabrications are flanged and finished to a high standard

Autointelligence
A simple yet advanced electrical control system taking care of all the electrics on the machine. Historically electrics on plant and machinery are a troublesome – AutoIntelligence overcomes this with a completely water and vibration proof system designed and tested in the toughest environments. This system gives excellent usability and outstanding reliability, it will also make you aware when servicing is due and will recommend routine maintenance.

Open Top Flywheel System
Simply phenomenal velocity when chipping. Forst will throw the chip right to the front of your wagon due to the open top flywheel system with large gusseted draught fins at the rear. Chip is thrown, not blown meaning blockages on wet material are simply not a problem.

Forstgrip Feed Roller
The TT6 is no excpetion and takes advantge of our famous twin hydraulic horizontal feed roller system offering exceptional grip on timber. The large top feed lifts on an arc, climbing toward the timber rather than lifting straight up and down, this makes climbing butt ends exceptional. High tension due to twin heavy duty springs and a large bearings supporting either side of the top feed roller ensures strength and durability.

Wide Hopper
New and improved wide hopper right down to the mouth to make feeding this machine a dream and giving you the ability to get awkward limbs and forks into the incredibly strong rollers.

Simplicity of Maintenance
Two catches and two bolts to access the service part for the machine. One bolt to remove the anvil

Stage 5 Compliant Diesel
Any diesel engine over 24hp has to have DPF treatment so we give you the option of the Kubota at 24hp or the Doosan at 42hp with the DPF filter.
Now with 2 x diesel engine options, a fast, hungry and powerful 42hp Doosan DPF or a 24hp Kubota naturally aspirated diesel. A wide hopper, robust all steel construction & phenomenal performance all come as standard with the 6D series.
3 Year warranty as standard
Exactly what it says on the tin. Every New Forst Wood Chipper comes with an absolutely guaranteed, no quibble 3 Year Warranty. It’s all about making your life and job easy and that’s just what the 3 Year Warranty is designed to do. We’ll give you an excellent product and an outstanding warranty to make your purchase decision as straight forward as possible.
We won’t run away from the fact that we do have issues every now and then, and who doesn’t? The difference is that we’ll make sure you are supported when misfortune does occur and that you are kept on schedule and working at your best.
Any machine is only as good as the backup and support given by the manufacturer. With Forst you can be assured of a genuine Warranty to back you as well as a rock solid and high performance machine. Forst is the perfect work partner for any arboricultural contractor, tree surgeon, council or hire company. Make no mistake, Forst Wood Chippers are built to stand up to a hard life, and we’ll stand beside you all the way.

Demo a Forst Machine today
Nothing beats getting a machine on your site to see how it performs on the job. Click here to fill in a form to get a demo. Prepare to be blown away!