The multifunctional hydraulic excavator shear is the ideal tool in the rescue process.
| JS280RT | 2,100 |
| JS350RT | 3,000 |
| JS380RT | 3,500 |
| JS450RT | 4,500 |
| JS480RT | 4,600 |
An excavator hydraulic shear is the attachment that cuts metal directly on site, without first breaking it up with a hammer. It mounts on the arm in place of the bucket and works by shearing: the jaws close over a beam, pipe or profile and sever it in one movement. The JS-RT series covers five models, from 2,100 kg for 14-tonne excavators up to 4,600 kg for 39-tonne machines.
The difference compared with demolition by hydraulic hammer is speed and noise. The hammer breaks the concrete around the reinforcement, and the reinforcement still has to be cut afterwards. The shear cuts the steel structure directly, with no impact, so no vibration is transmitted into neighbouring buildings, which is why it ends up on selective demolition in residential areas, where impact work is limited by the permit.
| Model | Weight (kg) | Max. opening (mm) | Overall length (mm) | Pressure (kg/cm²) | Flow (L/min) | Excavator |
|---|---|---|---|---|---|---|
| JS280RT | 2,100 | 485 | 2,700 | 250–300 | 180–220 | 14–18 t |
| JS350RT | 3,000 | 595 | 3,200 | 300–320 | 200–250 | 14–18 t |
| JS380RT | 3,500 | 600 | 3,280 | 320–350 | 200–250 | 18–28 t |
| JS450RT | 4,500 | 700 | 3,700 | 320–350 | 250–300 | 28–39 t |
| JS480RT | 4,600 | 740 | 3,800 | 320–350 | 250–300 | 28–39 t |
All models work at pressures of 250–350 kg/cm² and flows of 180–300 L/min, so they need an auxiliary hydraulic circuit on the excavator. The jaws are replaceable, and overload protection stops the cycle before the cylinder is forced beyond its limit. Combined with a quick coupler, the shear is swapped with the bucket in a few minutes, without disconnecting hoses.
They are often confused, because they look similar and mount in the same place. They do opposite jobs, though. The shear cuts metal: beams, profiles, pipes, plate and exposed reinforcement. The pulveriser crushes concrete by compression, separates concrete from reinforcement and prepares the material for recycling.
On the demolition of a steel hall, the shear does the whole job. On a reinforced-concrete slab, the pulveriser breaks the concrete and the shear cuts the remaining reinforcement: they complement each other. If your work is mostly concrete, the page you want is the excavator hydraulic pulveriser; if it is mostly metal, you are in the right place.
“On a reinforced concrete slab, the pulveriser crushes the concrete and the shear cuts the remaining rebar: they complement, not replace, each other.”
Selective demolition of steel structures: industrial halls, trestles, silos, process pipework, tanks. Material is cut on the spot to a size that fits the container, without a second cutting pass on the ground.
Scrap-metal recycling and processing of metal waste: profiles, rails, thick plate, welded structures. Here the maximum jaw opening matters: a 740 mm jaw takes in a beam that a 485 mm jaw can only attack from the side, in several passes.
Dismantling heavy vehicles: buses, trucks, agricultural machinery and scrapped equipment. The body and chassis are cut without an open flame, which matters on sites where flame cutting is banned for safety reasons.
Emergency response: heavy vehicles trapped after road accidents, unstable structures that must be cut quickly and in a controlled way.
Halls, trestles, silos and technological pipelines, cut without percussion in inhabited areas.
Profiles, rails and thick plate, sectioned to container size.
Scrapped buses, trucks and machinery, with no open flame on the platform.
The second common confusion, and a costlier one than the first, because it leads to buying the wrong machine. The hydraulic hammer (breaker) breaks by impact: it is the tool for mass concrete, foundations, industrial floors and rock. The shear cuts by shearing and is the tool for anything made of metal.
On a reinforced-concrete structure both are used, at different stages. The breaker opens the concrete quickly, at high volume, and leaves the reinforcement exposed. That reinforcement is not broken, it is cut, and that is where the shear comes in. A site doing mixed demolition keeps both attachments on a quick coupler and swaps them depending on what is left in front of it.
Three practical differences matter in the decision. Wear parts: on the breaker the chisel wears, on the shear the jaws, with different intervals and costs. Vibration: impact is transmitted into the ground and neighbouring buildings, shearing is not. And speed on metal: a profile the shear cuts in one closing can keep a breaker busy for minutes, with wear for nothing. If your work is mostly metal, an excavator hydraulic shear pays for itself through the time saved, well beyond what the list price suggests.
Demolition permits in built-up areas often limit impact work, to certain hours or entirely, because of the vibration transmitted into neighbouring structures. An excavator hydraulic shear works by shearing, without striking, so it produces no impact vibration and does not fall under the same restrictions. In practice, it is the difference between a site that can work eight hours a day and one that stops after lunch.
The second gain is in removal. The cut material comes out directly at container size, so there is no second cutting pass on the ground and no transport runs wasted on sections that are too long.
The jaws are the planned wear part, and the rest is heavy mechanics that lasts. Their wear depends on what you cut: sheet and thin profiles are gentle on them, while rails, thick plate and welded sections blunt them visibly faster. They are replaced on site, without sending the attachment back to the manufacturer.
What shortens the life of the rest of the assembly is almost always the hydraulics, not the cutting: contaminated oil, filters that are not changed and working above the recommended flow load the cylinder and seals. Overload protection stops the cycle before it forces, but it does not make up for a poorly maintained circuit. That is why we check the excavator's flow and pressure before quoting: a model correctly chosen on paper, fitted to an undersized circuit, wears out at your expense.
Three parameters decide, in this order. The excavator tonnage comes first and is not negotiable: an attachment that is too heavy for a machine that is too small unbalances it and wears the arm prematurely. Second, the maximum jaw opening must exceed the largest section you cut regularly. Third, the hydraulic flow available on the auxiliary circuit must cover what the model requires.
JS280RT and JS350RT suit 14–18 tonne excavators, for medium demolition and scrap metal. JS380RT is the intermediate step, for 18–28 tonnes, when the 485 mm opening becomes tight. JS450RT and JS480RT are for 28–39 tonnes, on industrial demolition where large sections are cut without repositioning. Uzinex engineers check your excavator's flow and pressure before quoting, so the recommended model fits and works at its rated parameters.
• Model selection included: the recommendation is based on your machine's tonnage, flow and pressure. • Hydraulic compatibility check before ordering. • Transport and mounting on the excavator included, with adjustment of the auxiliary circuit. • 60-month warranty. • Spare jaws permanently in stock in Iași, without long site stoppages. • Nationwide technical support in Romania, response within 24–48 hours. • Technical documentation for public tenders and EU-funded projects.
Products and services that have earned the appreciation and trust of clients across industry.
with a 3-in-1 laser machine (welding + cleaning + cutting) and a smart capital decision
All delivered equipment meets European quality standards and the DNSH principle, is eligible for acquisitions through EU and PNRR funding, and includes interactive AI-powered manuals for operation, maintenance and operator training.
Media appearances, technical demos and presentations from the most important industrial trade fairs in Europe. See our technology in action.
Over 100 companies in manufacturing, logistics and industry have chosen Uzinex as their strategic partner.
All references→
„We do stainless-steel metal fabrication dedicated to restaurant kitchens. The UZINEX equipment was a radical change: modernization, an increase in production and quality.”
„I had no idea, I was completely clueless. And you started to explain to me. You told me what technologies to choose, what packaging to produce, what would work better on the market.”
„We use a single person who can operate 3-4 machines. Before, we needed 3-4 people to do the same thing.”
„We have multiple challenges in making special structures that serve our systems, and the laser welding machine solution helped us enormously.”
„Laser welding on stainless is something else, it's a completely different thing. The quality of the machines is undeniable: the samples say it all.”
„With Uzinex, I felt very well protected by the assistance they provided. When you have a whole shift stalled and you need someone to answer quickly, it matters enormously.”
„The proof that everything went well is that the equipment now works. We have over three years of experience with no problems. Or when there were issues, there was support. We're satisfied with the collaboration.”
„I can do even 5 boxes for one person, I can also do 10 boxes. Which other firms can't do. That is, they'd have to change dies, set up a whole 12-hour affair.”
„Whether I called at 2 in the morning or at 9 in the morning, the problems got solved. We're satisfied and we'll work together again.”
„A good, smooth collaboration. We always had support and help.”
„We're among the top producers in Romania for this product. I wouldn't have imagined that when I started, but things fell into place.”
„On price and quality ratio, they were the best price and the best quality on the market. We got along well and we're satisfied.”
Six technology directions we integrate turnkey: from plug & play IIoT sensors, to cobots, predictive maintenance, optical inspection, MES connectivity and custom industrial software.
See in real time how much each machine produces and how long it sits idle. We fit sensors on any equipment, new or old, and within a few hours you have the OEE dashboard on your phone. No complex wiring, no production downtime. The first concrete step toward digitalization, with ROI visible from the very first month.
Solve your labor shortage without tripling your costs. The cobot works safely alongside your people (palletizing, feeding the CNC, welding) while you recover the investment in 12-18 months. Prices 30-40% below European distributors, with installation and programming included from us.
Stop waiting for things to break. Our algorithms analyze sensor data and tell you exactly which part will fail and when, and we bring it to your production line before the breakdown. Zero unplanned downtime, zero contractual penalties, complete operational peace of mind.
Eliminate defects before they reach the customer. Our cameras inspect every part at speeds no operator can match, detecting sub-millimeter defects. They mount onto your existing line, with no modifications. Ideal if you produce for export and have strict quality clauses.
Connect your machines to your office, regardless of brand or age. Our gateway automatically translates the data from any machine into your ERP's format: no manual entry, no paper forms, no human error. The manager sees production live, the operator receives digital instructions.
Have a process that no off-the-shelf software can solve? We build custom industrial applications: from tailored SCADA panels and HMI interfaces, to production planning systems, lot traceability and automated reporting. The code is yours, it runs on your servers, with no monthly subscriptions or vendor lock-in.
Answers to the most common technical and commercial questions. Can't find what you're looking for?
Contact the team →Contact our team and receive a personalized offer within a maximum of 24 working hours.
