The skeleton excavator bucket is the open-structure attachment made of steel bars that performs both excavation and material sorting within the same work cycle. Fine earth, sand and small fractions pass freely through the gaps between the bars, while stones, roots and coarse debris are retained and discharged separately.
The skeleton excavator bucket eliminates the manual sorting operation and significantly reduces the volume of material transported to the dump, keeping the reusable fine fraction on site as fill or levelling material.
Available in widths from 760 mm to 1.830 mm and capacities from 0,58 to 2,1 m³, the skeleton excavator bucket is manufactured from T1 steel or Hardox-500 — high-strength, high-hardness steels sized for continuous abrasive contact with stone, gravel and demolition waste. The bar spacing of 4,7–5,3 cm ensures efficient separation of fine granular materials from solid debris, without clogging the screen in wet or clayey soil conditions. Key advantages of the skeleton excavator bucket
• Excavation and sorting simultaneously in a single cycle — the skeleton excavator bucket performs both digging and separation of the material into fractions in the same movement. Compared with the classic sequence of standard bucket + manual sorting or a separate screen, the skeleton excavator bucket reduces the number of operations and the personnel required, increasing hourly productivity on land-clearing and site-preparation works.
• Hardox-500 or T1 — maximum durability against abrasive wear — the skeleton excavator bucket is manufactured from high-performance wear steels: Hardox-500 with a hardness of 470–530 HB or T1 with equivalent strength. Continuous contact with stone, gravel and abrasive waste wears out the screen bars — the Hardox materials extend the service life by 3–5 times compared with standard structural steel.
• Bar spacing 4,7–5,3 cm — precise separation — the distance between the bars of the skeleton excavator bucket is standardized at 4,7–5,3 cm, the optimal dimension for separating stones and coarse debris from fine earth and small granular fractions. This spacing allows sand, wet earth and particles below 40–45 mm to pass through, retaining everything that exceeds this size.
• Widths 760–1.830 mm, capacities 0,58–2,1 m³ — the skeleton excavator bucket range covers everything from compact mini-excavators working in gardens and confined spaces (760 mm, 0,58 m³) up to medium and heavy excavators used in demolition, quarries and infrastructure works (1.830 mm, 2,1 m³).
• Easily replaceable bolt-on tips — the skeleton excavator bucket is equipped with bolt-on tips at the penetration edge, replaceable independently without modifying the bucket structure. The tips are the fastest-wearing components on abrasive and rocky soils — the ability to replace them quickly on site, without welding and without dismounting the bucket, reduces maintenance downtime.
• Compatible with Pin-On, Klac™ and German System — the skeleton excavator bucket is available with the standard Pin-On, Klac™ and German System mounting systems, covering compatibility with most excavators and common quick couplers on the Romanian market.
• Weight 500–5.000 kg adapted to the excavator class — each size of skeleton excavator bucket is designed with the weight corresponding to the excavator tonnage class, so as not to exceed the available lifting capacity and to keep hydraulic efficiency within normal parameters.
• 60-month UZINEX warranty — extended coverage with spare parts, bolt-on tips and replacement bars in stock at Iași, and guaranteed nationwide technical support within 24–48 hours.
Technical specifications — skeleton excavator bucket
| Parameter | Value |
|---|---|
| Structural material | T1 steel or Hardox-500 |
| Available width | 760 mm – 1.830 mm (30″ – 72″) |
| Capacity | 0,58 m³ – 2,1 m³ |
| Bar spacing | 4,7 – 5,3 cm |
| Weight | 500 – 5.000 kg (size-dependent) |
| Tips | Bolt-on — independently replaceable |
| Mounting systems | Pin-On, Klac™, German System |
| Sorted materials (pass-through) | Sand, fine earth, fractions <45 mm |
| Retained materials | Stones, roots, construction debris >45 mm |
The size, bar spacing and mounting system are selected according to the type of material, the excavator tonnage and the existing coupler. UZINEX engineers confirm the correct variant — free technical consultancy available . Applications for the skeleton excavator bucket
Clearing and preparing land for construction is the main application of the skeleton excavator bucket. Vegetated terrain, debris from previous demolitions, layers of rubble and uneven gravel must be cleared and levelled before laying out the foundations. The skeleton excavator bucket separates stone, roots and coarse debris from the fine earth, which it leaves on site as fill material, reducing transport and the cost of purchasing fill material.
Construction waste recycling works benefit directly from the skeleton excavator bucket for separating recoverable fractions. Crushed concrete mixed with earth, demolition rubble and material excavated from trenches contain fine fractions that cannot be recovered while mixed with coarse debris. The skeleton excavator bucket automatically separates the fine fraction — reusable as fill — from the solid debris destined for recycling or disposal.
Clearing and preparing agricultural and forestry land use the skeleton excavator bucket for removing roots, field stone and vegetal debris from the topsoil layer. On recently cleared land or on grasslands converted to arable land, the skeleton excavator bucket clears the surface layer of obstacles without removing the fertile soil — which passes through the bars and remains on the land.
Riverbank and water-management works use the skeleton excavator bucket for clearing riverbeds and drainage channels of coarse sediment, vegetation and debris, retaining the mud and fine sediment that are returned to the bed after settling. On rehabilitation sites for irrigation and drainage infrastructure, the skeleton excavator bucket is the standard tool for separating material from silt deposits. The skeleton excavator bucket versus the standard bucket and the cleaning bucket
The skeleton excavator bucket, the standard bucket and the cleaning bucket (toothless) are complementary attachments, each optimized for a specific type of material and operation.
The standard bucket is the choice for excavating homogeneous materials — compact soil, clay, sand, gravel — where sorting is not necessary and the volume of material moved per cycle is maximized. The skeleton excavator bucket is superior when the material is heterogeneous and contains fractions of different sizes that must be separated within the same work cycle.
The cleaning bucket (toothless, with a solid bottom) is optimized for levelling and clearing surfaces with fine material — mud, sand, loose earth — where sorting is not required. The skeleton excavator bucket is the choice when the material also contains coarse fractions that must be removed, not levelled.
On excavators fitted with the Monde DEHN quick coupler , switching between the skeleton excavator bucket and the standard bucket or the cleaning bucket is done from the cab in under a minute, adapting the attachment to the current phase of the work. Frequently asked questions about the skeleton excavator bucket
Does the skeleton excavator bucket also work in wet or clayey soil?
Yes, with the caveat that wet clay can partially clog between the bars of the skeleton excavator bucket if the moisture is very high. The standard spacing of 4,7–5,3 cm minimizes clogging compared with screens with smaller gaps, but on extremely clayey and wet soils the sorting productivity is reduced. On normal soils with a moderate clay content, the skeleton excavator bucket works efficiently even in high-moisture conditions. Are the bolt-on tips replaced without dismounting the bucket?
Yes — the bolt-on tips of the skeleton excavator bucket are replaced on site with a standard wrench, without dismounting the bucket from the arm and without welding. The wear of the tips depends on the abrasiveness of the material — on hard stone and siliceous gravel, replacement is more frequent. UZINEX keeps compatible replacement tips in stock at Iași for immediate delivery. What size of skeleton excavator bucket is suitable for my excavator?
The size of the skeleton excavator bucket is selected based on the excavator tonnage and the required working width. As a general rule: 760–900 mm for 3–8 tonnes, 900–1.200 mm for 8–20 tonnes, 1.200–1.830 mm for 20–40 tonnes. UZINEX engineers confirm the exact size and weight compatible with your specific excavator at the quotation stage. Is the skeleton excavator bucket eligible for SEAP/SICAP public procurement?
Yes. UZINEX is a member of the Enterprise Europe Network and supplies excavator attachments for projects funded by EU funds and public procurement. Complete technical documentation is provided on request. Leasing options are available on the UZINEX credit and leasing page . Why UZINEX for your skeleton excavator bucket
The skeleton excavator bucket is an attachment whose service life and efficiency depend directly on the quality of the bar steel and on correct sizing relative to the excavator and the working material.
• 60-month warranty — extended coverage for the skeleton excavator bucket under intensive use on abrasive materials.
• Free compatibility check — UZINEX engineers confirm the size, mounting system and weight suitable for your excavator and application.
• Transport and installation included — delivery to destination, mounting on the excavator and operator training included in the price of the skeleton excavator bucket.
• Bolt-on tips and replacement bars in stock at Iași — the critical wear parts available immediately, with no waiting times that stop production on site.
• Compatible with the Monde quick coupler — on excavators with the DEHN quick coupler, the skeleton excavator bucket is changed in under a minute from the cab.
• Nationwide technical support within 24–48 hours — a network of technicians with national coverage and a guaranteed response time.
The skeleton excavator bucket available through UZINEX is the attachment for sorting and clearing land, recycling construction materials and agricultural land-clearing — with Hardox-500 or T1, widths of 760–1.830 mm, bolt-on tips and a 60-month warranty.
