Who Trevi Benne is
Trevi Benne is an Italian attachment manufacturer founded in 1992. Its catalogue spans demolition, recycling, earthmoving and forestry, and it sells through a global dealer network rather than through a single regional importer. The forestry range is the part that matters on this site: tree shears, wood splitters, and root and stump cutters.
That breadth is worth understanding commercially, because it shapes the product. Trevi Benne builds attachments for carriers that spend most of their year doing something other than forestry. The forestry range shares the construction of the demolition and sorting attachments: heavy welded structures, wear-resistant plate in the working zone, hydraulic architecture a general-purpose excavator can supply, and a catalogue organised by carrier class rather than by forestry discipline. That suits an Australian contractor whose excavator digs trenches in winter and clears regrowth in spring.
How the Australian range is structured
Two families cover cutting standing timber, and one covers what is left in the ground afterwards. The tree shears buying guide covers the category in full.
The WL Series is the compact and mid-size tree shear family: three models across 2.5 to 21 tonne excavators, 240 to 1,270 kg, and a published trunk capacity band of 50 to 450 mm depending on model. Rotation is optional, as is an upper accumulator and an oscillation or twin-slewing-cylinder arrangement. This is the family for regrowth, shelterbelts, council programs and light plantation thinning, where cycle speed and boom agility earn more than absolute cutting diameter.
The WR Series is the heavy family: three models spanning roughly 1,250 to 2,225 kg on 11 to 35 tonne carriers. Regional dealer literature places the WR10 around a 400 mm nominal cut on 12 to 16 tonne machines, the WR15 around 500 mm on 17 to 22 tonne machines and the WR20 around 550 mm on 23 to 30 tonne machines. Those per-model bands are indicative rather than factory-published, which is why a compatibility assessment matters more here than a brochure table.
Behind both sits the WT Series, the superseded six-model range from WT002 to WT020 that still appears in older Australian marketing and in the used market. It is not a current ordering option, but it is a real part of the fleet in this country and deserves a serial-specific assessment rather than a brochure.
The WE root and stump cutters are a different tool with a different job. The WE10 is a 1,190 kg pincer with a 980 mm jaw for 11.5 to 18 tonne excavators; the WE15 is a 2,240 kg unit with a 1,400 mm jaw for 20 to 28 tonne carriers. Both sever structural roots, lift the root ball and split it down to a transportable size. Neither is a grinder, and the difference is covered in the stump cutters guide.
How the Trevi Benne forestry range fits together
- WL or WR shear fells
- Stem handled and placed
- WE cutter extracts the stump
- Stump split for transport or biomass
The design philosophy in the published features
Three published details tell you how Trevi Benne thinks about cutting timber.
The first is the WR twin-blade system, which penetrates the trunk from both sides rather than forcing a single blade through the full section. Two shorter penetrations into opposing faces distribute the load, shorten the distance any one blade travels through dense fibre and reduce the tendency for a single blade to push the stem away as it bites. In dense Australian hardwood, cut time and blade loading are the two variables that decide whether the attachment is commercially viable, which is why the cutting architecture is worth asking about ahead of the headline diameter.
The second is the choice of Hardox for blades and gripping structures across the WR family. Wear-resistant plate in the cutting and gripping zone is what keeps the working geometry intact after the abrasive, dirty, grit-loaded work that Australian clearing involves.
The third is the optional fork tower. A shear that can cut a 500 mm stem still has to control it afterwards, and a fork tower gives the head something to bear the stem against while it is being severed and placed. Together with the rotation and accumulator options, it means the published configuration decisions are about handling the stem as much as cutting it.
The WE family takes the opposite approach: a single hydraulic cylinder generating cutting force through a large jaw, with no rotation in the standard factory family. Stump extraction does not need orientation control. It needs force and jaw reach.
Buying Trevi Benne in Australia
Trevi Benne is distributed in Australia and New Zealand by Machinery Specialist, based at South Windsor in New South Wales. Three things follow for a buyer.
Blade, pin, bush and seal enquiries can be answered against the exact serial number rather than guessed from a catalogue. For a legacy WT unit in particular, that serial-specific path is the only reliable way to establish what fits.
Demonstrations and compatibility assessments happen against your carrier. The published carrier bands assume a conventional boom, stick, counterweight and hitch. Your machine’s real auxiliary flow, return pressure, quick hitch and lift chart at the radius you actually cut at will move the recommendation, and the hydraulic matching guide and lift chart guide explain what to bring to that conversation.
Model and specification questions have a local answer. Trevi Benne’s forestry catalogue has changed structure over time, and Australian material has not always tracked it. A distributor quoting a current data sheet resolves that.
Getting a current data sheet
Ask the distributor for the factory data sheet for the exact model, build and configuration being quoted, not the family page. Weights change with rotation, bracket and hitch. Flow and pressure requirements change with the rotation and accumulator options fitted. Carrier bands move with configuration. Where anything on this site disagrees with that sheet, the sheet is correct and this page is not.
Ask the distributor for
- The current factory data sheet for the exact model and build being quoted, not the family brochure
- Complete attachment mass as configured: head, rotator, bracket and quick hitch
- Minimum, recommended and maximum flow, plus minimum and maximum pressure for the head and any rotation or accumulator circuit
- A written compatibility assessment against your excavator make, model, year, boom and stick, counterweight and hitch
- A recommended continuous cutting diameter in your dominant species, separate from the published maximum
- Blade material, sharpening specification, replacement threshold and parts availability for that model
- For WE cutters, the jaw opening and closing force relative to the root systems you actually pull
- For any used WT unit, a serial-specific confirmation of build specification and parts availability
Frequently asked questions
What is the difference between the WL and WR shear families?
WL is the compact and mid-size family for 2.5 to 21 tonne excavators, spanning 240 to 1,270 kg and a 50 to 450 mm published trunk capacity. WR is the heavy family, roughly 1,250 to 2,225 kg on 11 to 35 tonne carriers, using a twin-blade cutting system with fork tower, rotation and accumulator options.
Can I still buy a WT Series shear new?
No. The WT range has been superseded by WL and WR. Units still trade second-hand in Australia, and older local marketing still describes the six-model structure, so any WT purchase should be assessed against its serial number and original build specification rather than a brochure.
Is a WE root and stump cutter the same thing as a stump grinder?
No. A WE cuts structural roots, extracts the root ball and splits it for transport or biomass, leaving material to remove from site. A stump grinder processes the stump in place. The two suit different site outcomes and are compared in the stump cutters and stump grinders guides.
Who supports Trevi Benne forestry attachments in Australia?
Machinery Specialist, based at South Windsor in New South Wales, distributes the Trevi Benne forestry range in Australia and New Zealand and is the channel for quotations, parts, compatibility assessments and demonstrations.
Does the per-model WR sizing on this site come from the factory?
No. Trevi Benne publishes family-level figures for the WR range. The per-model carrier and cutting bands are drawn from regional dealer literature and are indicative only, which is why the factory data sheet for the exact model quoted supersedes anything published here.
Trevi Benne stump & root cutters
Trevi Benne WE10 root and stump cutter
The medium-excavator stump extractor: a 1,190 kg hydraulic pincer with a 980 mm jaw that severs structural roots, lifts the root ball and splits it down to a transportable size.
Trevi Benne WE15 root and stump cutter
The heavy WE model: more than two tonnes of attachment with a 1,400 mm jaw for large hardwood root systems on 20 to 28 tonne carriers.
Trevi Benne tree shears
Trevi Benne WL Series tree shears
The compact and mid-size end of the current Trevi Benne range: three models spanning 2.5 to 21 tonne excavators, with optional rotation and an upper accumulator for bunching small stems.
Trevi Benne WR10 tree shear
The entry point to the heavy WR family. Indicatively matched to 12 to 16 tonne excavators with a nominal 400 mm cutting class, twin-blade architecture and hydraulic rotation options.
Trevi Benne WR15 tree shear
The mid-range WR shear for the 17 to 22 tonne excavator class that most civil and clearing contractors already run, with a nominal 500 mm cutting class.
Trevi Benne WR20 tree shear
The largest of the WR family, indicatively matched to 23 to 30 tonne excavators with a nominal 550 mm cutting class for industrial clearing and large-stem work.
Trevi Benne WT Series tree shears (legacy)
The six-model range behind the "six different sizes" description in older Australian marketing. Superseded by WL and WR, but units still trade second-hand and deserve a serial-specific assessment.
Get a recommendation, not just a price
Send us your excavator model, hydraulic figures, tree species and typical diameters. We will come back with a carrier-matched configuration and a written specification you can compare against any other quote.