UJ 200 Crusher Bucket

The Hardox UJ-200 crusher bucket is the hydraulic attachment for 20–25 tonne excavators with the highest wear resistance in its class — the main structure is made roughly 80% from Hardox plates, the world-reference steel for intensely abrasive applications. The Hardox UJ-200 crusher bucket produces aggregate with a particle size adjustable between 10 and 150 mm, covering in a single machine both the coarse grade for structural fill and the fine grade for foundation layers and recycled concrete, without changing the attachment or transferring the material.

With a capacity of 0,65 m³ and a weight of 2.700 kg, the Hardox UJ-200 crusher bucket is sized precisely for excavators in the 20–25 tonne class — the dominant class on medium demolition sites, road infrastructure works and medium-capacity quarry operations. The working pressure of 24,5 MPa and the flow rate of 150 l/min fall within the specifications of the standard auxiliary hydraulic circuits of most excavators in this class, eliminating the need for additional hydraulic modifications.

Key advantages of the Hardox UJ-200 crusher bucket

• Hardox structure — ~80% of the main body of the Hardox UJ-200 crusher bucket is made from wear-resistant Hardox plates, the high-hardness steel used in the most abrasive applications in the construction and mining industries. This choice of material significantly extends the bucket's service life compared with standard structural-steel constructions, especially when processing hard rock (granite, basalt, quartzite) and reinforced concrete with a high silica content.

• Adjustable particle size 10–150 mm — the discharge opening of the Hardox UJ-200 crusher bucket adjusts between 10 and 150 mm, offering precise control over the grade produced. The 10–30 mm grade is suitable for recycled concrete and road wearing courses, the 30–80 mm grade for foundations and sub-foundations, and the 80–150 mm grade for coarse fill and ballast. The same machine covers all these applications without changing the attachment.

• Automatic anti-jam reversal function — the Hardox UJ-200 crusher bucket automatically reverses the direction of the crushing mechanism when it detects excessive resistance caused by oversized bodies or entangled reinforcement, clearing the jam without a forced stop and without manual intervention in the active area.

• Optional 24V magnet (500×400 mm) — the 24V permanent magnet automatically recovers the steel reinforcement from the crushed concrete, separating it from the produced aggregate without manual intervention. The 500×400 mm dimensions of the magnet are calibrated for the material flow produced by this Hardox crusher bucket at typical working particle sizes.

• Superior-quality motors and valves — the hydraulic components of the Hardox UJ-200 crusher bucket are selected for reliability in continuous production, with high temperatures and pressures. The service life of the hydraulic components is matched to that of the Hardox structure, avoiding the scenario in which the hydraulics fail before the metal body.

• Feeder size 700×500 mm — the 700×500 mm feed opening of the Hardox UJ-200 crusher bucket accepts large material blocks, compatible with the productivity of a 20–25 tonne excavator bucket, eliminating the need for additional pre-fragmentation with a breaker for typical demolition materials.

• OEM customisation available — the Hardox UJ-200 crusher bucket is available with customisation on request for special applications (non-standard mounting dimensions, modified hydraulic circuits, additional accessories), with pre-delivery inspection included.

• 60-month UZINEX warranty — extended coverage compared with the standard 12-month warranty, with spare parts in stock at Iași and national technical support with a guaranteed 24–48 hour response time.

Technical specifications — Hardox UJ-200 crusher bucket

The exact hydraulic compatibility with your excavator (available auxiliary flow, quick-coupler type) is confirmed by UZINEX engineers before confirmation — free technical consultancy .

Why Hardox matters for a crusher bucket

The Hardox UJ-200 crusher bucket uses Hardox as its main structural material for a direct reason: the service life of a crushing attachment is determined primarily by resistance to abrasive wear, not by resistance to point loads. Reinforced concrete, granite and basalt contain hard components (quartz, feldspar, silica) that rapidly erode ordinary structural steel through continuous micro-abrasion.

Hardox — the steel with a Brinell hardness of between 400 and 600 HB depending on the grade — resists abrasive wear 3–5 times better than the S355 construction steel used in standard buckets. For a Hardox crusher bucket in an intensive working regime (6–8 hours/day on abrasive materials), the difference translates directly into the replacement intervals of the wear plates and the total operating cost per tonne processed.

The 80% Hardox construction of the UJ-200 model does not mean the entire bucket is Hardox — the areas not exposed to direct abrasive wear (the mounting frame, the hydraulic connection elements) use appropriate structural steels, maintaining the optimal weight of 2.700 kg for the 20–25 tonne excavator class. This Hardox crusher bucket is balanced to maximise wear life without overloading the excavator arm.

Particle size 10–150 mm — the complete range from a single attachment

The 10–150 mm adjustment range of the Hardox UJ-200 crusher bucket is one of the widest available in this tonnage class and defines the real versatility of the attachment on sites with multiple simultaneous requirements.

At 10–30 mm, the Hardox UJ-200 crusher bucket produces a fine aggregate suitable for recycled concrete (in accordance with SR EN 12620 for recycled aggregates), road wearing courses with recycled binder and surface works. This particle size requires several passes of the material through the crushing chamber and reduces hourly productivity, but eliminates the need for a secondary crusher.

At 50–100 mm, the Hardox UJ-200 crusher bucket operates at maximum productivity, producing aggregate for road sub-foundations, construction foundations and structural fill materials — the most frequent applications on demolition and infrastructure sites. This is the standard working particle size for which the UJ-200 is optimised.

At 100–150 mm, the Hardox UJ-200 crusher bucket produces coarse ballast and non-structural fill material rapidly, at maximum hourly productivity, ideal for the rapid filling of foundation pits, sewer trenches and infrastructure cuts.

Applications and industries for the Hardox UJ-200 crusher bucket

Civil and industrial demolition contractors with excavators in the 20–25 tonne class are the main users of the Hardox UJ-200 crusher bucket. On a site demolishing a G+4 residential block, the Hardox crusher bucket produces recycled aggregate that can be used directly on site as foundation or sub-foundation fill for the future construction, eliminating the cost of transporting the demolished concrete to an inert-waste tip and the cost of purchasing new aggregates.

Hard-stone quarry operators working granite, basalt or high-strength limestone benefit directly from the Hardox structure of the UJ-200 crusher bucket. Hard rock rapidly wears the plates of standard buckets — the Hardox UJ-200 crusher bucket maintains its crushing performance over significantly longer periods between maintenance operations, reducing production downtime.

Road rehabilitation works involving the demolition of degraded concrete layers or reinforced asphalt are another frequent application. The Hardox UJ-200 crusher bucket processes old road concrete directly in line, producing fill material for the road body and reducing the volume of waste transported to a tip. For railway works, the UJ-200 processes worn concrete sleepers and contaminated ballast material.

Underground infrastructure works — sewerage, gas networks, electrical cables — frequently involve the demolition and removal of existing concrete structures over long stretches of route. The Hardox UJ-200 crusher bucket turns the excavated concrete into fill material for rebuilding the trenches, reducing the volume of imported material required and accelerating the restoration of the road surface.

Frequently asked questions about the Hardox UJ-200 crusher bucket

What distinguishes the Hardox UJ-200 crusher bucket from other crusher buckets in the catalogue?

The Hardox UJ-200 crusher bucket stands out through three combined features: the Hardox structure (~80% of the main body), the 10–150 mm particle-size range — one of the widest in the class — and the optional 24V magnet with 500×400 mm dimensions calibrated for the flow of this model. Compared with the BKM (a multi-model range for 15–70 tonnes) and the 70t/h bucket (focused on high hourly capacity), the Hardox UJ-200 crusher bucket is the solution optimised for maximum wear resistance on 20–25 tonne excavators.

Is the 150 l/min flow rate standard for 20–25 tonne excavators?

The 150 l/min flow rate of the auxiliary hydraulic circuit is available on most 20–25 tonne excavators in current production (Komatsu, Caterpillar, Hitachi, Volvo, Doosan, Hyundai). On older models or on configurations with a reduced-capacity auxiliary circuit, the available flow may be below 150 l/min — UZINEX engineers verify the exact compatibility with your specific excavator before confirmation, free of charge.

Does the 24V magnet recover all the reinforcement from the processed concrete?

The optional 500×400 mm magnet of the Hardox UJ-200 crusher bucket recovers all ferrous fractions from the produced aggregate — rebar, tie wire, embedded metal profiles. It does not recover non-ferrous fractions (copper, aluminium, stainless steel). The 24V voltage is compatible with the standard electrical systems of excavators in this class, without additional electrical modifications.

What periodic maintenance does the Hardox UJ-200 crusher bucket require?

The Hardox UJ-200 crusher bucket requires periodic inspection of the Hardox wear plates (checking residual thickness), lubrication of the pivot points and verification of the hydraulic circuit seals. The inspection is carried out by the machine operator without specialised equipment. UZINEX provides the integrated AI-powered user manual and keeps replacement plates permanently in stock for immediate delivery.

Is the Hardox UJ-200 crusher bucket eligible for acquisition through European funds?

Yes. UZINEX is a member of the Enterprise Europe Network and supplies equipment for projects with European funds and public procurement through SEAP/SICAP. The complete technical documentation (technical data sheet, CE declaration of conformity, Hardox specifications) is provided on request. Leasing and financing options are available on the UZINEX credit and leasing page .

Can the Hardox UJ-200 crusher bucket process asphalt as well, or only concrete?

The Hardox UJ-200 crusher bucket efficiently processes both reinforced concrete and asphalt — including asphalt reinforced with metal mesh or fibres. Asphalt is a less abrasive material than granite or high-silica concrete, so wear of the Hardox plates is lower in predominantly asphalt applications. The 10–150 mm particle size applies identically to asphalt material, producing RAP (Reclaimed Asphalt Pavement) usable in new asphalt layers.

Why UZINEX for the Hardox UJ-200 crusher bucket

The Hardox UJ-200 crusher bucket mounted on a 20–25 tonne excavator is an attachment with a direct, measurable impact on the cost per tonne processed and on the profitability of demolition and infrastructure contracts. UZINEX provides complete support throughout the entire life cycle.

• 60-month warranty — coverage extended beyond the market standard for the Hardox UJ-200 crusher bucket in a continuous industrial production regime.

• Free hydraulic compatibility check — UZINEX engineers confirm compatibility with your specific excavator (auxiliary flow, pressure, quick coupler) before confirmation, eliminating the risk of incompatibility.

• Transport and commissioning included — delivery to destination, mounting on the excavator, load testing and operator training included in the price of the Hardox UJ-200 crusher bucket.

• Replacement Hardox plates permanently in stock — the critical wear components for the Hardox UJ-200 crusher bucket are available immediately at Iași, with no waiting times that block production on site.

• AI-powered user manual — interactive documentation for the machine operator, included with every Hardox crusher bucket delivered through UZINEX.

• National technical support within 24–48 hours — a network of technicians with nationwide coverage and a guaranteed response time for on-site interventions.

• Eligible for European funds and public procurement — member of the Chamber of Commerce and Industry and the Enterprise Europe Network, with complete documentation for SEAP/SICAP files.

The Hardox UJ-200 crusher bucket available through UZINEX is the choice of operators who process intensely abrasive materials on 20–25 tonne excavators and require an adjustable particle size of 10–150 mm, maximum wear resistance through the Hardox structure and guaranteed national technical support over 60 months.