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Key Features
Description
This demolition grab is a modular, multi-purpose excavator attachment designed to handle a wide spread of demolition tasks by swapping out jaw kits on a single main body. Instead of committing to one fixed jaw profile, the same carrier frame can be configured for gripping, crushing, processing reinforced concrete, and cutting duties, so operators can move from structural breakup to material reduction and rebar management with the same attachment platform. The unit is built to be positioned precisely at the workface, using a reinforced rotation system with adjustable rotation speed to line the jaws up cleanly on walls, slabs, beams, and loose debris.
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Sales Manager
I joined Approved Hydraulics in November 2014 at the age of 18, starting as a Stores Apprentice with responsibility for stock control, goods management, and purchasing support. This role gave me a strong grounding in our products, processes, and the operational side of the business.In 2017, I transitioned into a full-time sales position and have been actively involved in day-to-day sales activities ever since, supporting customers, managing enquiries, and developing product and commercial knowledge across our range.In 2025, I was promoted to Sales Manager. In this role, I lead a team of six sales colleagues and oversee the daily operations of the sales function, ensuring customer enquiries are handled efficiently, service standards are maintained, and the team continues to deliver consistent results and strong customer relationships.
MD Series Crusher
Structurally, it’s engineered like a heavy-duty “core + wear package” tool: a high-strength main frame paired with abrasion-resistant jaw components and robust pivot hardware. The frame is made from Strenx 700-grade steel, while the jaws are specified in Hardox 450 to resist gouging and wear when biting into concrete and handling rubble. Working joints are supported by hardened pins and steel bushings to keep the jaw alignment tight under repeated shock loads. Hydraulics are arranged with full protection around key components, and a speed valve is included to improve cycle responsiveness during repetitive open/close work.
The key to its versatility is the interchangeable jaw system: the main body accepts different kits that tailor the bite geometry to the job. A combi-style kit is suited to mixed demolition where you want a blend of gripping and processing capability, while a primary-demolition jaw kit focuses on secure hold and controlled breakage of heavier sections. A dedicated demolition/processing kit is shaped for crunching and downsizing concrete and helping separate embedded steel as the material is worked. Finally, a shear-oriented kit brings the attachment closer to cutting behavior for handling reinforcement and metal encountered during demolition and sorting.
Hydraulically, it’s intended for mid-to-large carriers: excavator class coverage is shown from roughly 15–20 tons up to about 35–50 tons depending on model, with a typical working pressure around 350 bar and oil flow requirements that scale by size (about 140–320 l/min). Rotation is driven separately at around 120 bar with modest flow (roughly 15–20 l/min), supporting controlled positioning rather than demanding high auxiliary flow. In terms of output, the jaw sets are rated for very high crushing/clamping forces (with top-end figures reaching into the hundreds of tons) and are specified to handle steel bar diameters up to roughly 70 mm on the larger sizes—making the tool well suited to both breaking concrete and dealing with reinforcement during demolition and on-site processing.
Main Features
Approved Hydraulics provides warranty coverage against defects in materials and workmanship under normal use for the periods below, subject to the conditions in this policy.
A. Two-year warranty (24 months)
A 2-year warranty applies to selected products or product lines as stated on the quotation, order acknowledgement, invoice, product datasheet, packaging or website.
B. One-year warranty (12 months) – conditional
A 1-year warranty applies to products not covered by the 2-year warranty, and/or to certain items where coverage is subject to conditions such as correct installation, commissioning, maintenance, and use (see Section 5).
Important: The warranty period that applies to a specific item is the one explicitly stated on the sales documentation or product literature for that item.
For full details visit our warranty page here
For all stock items and goods not requiring production.
Next Working Day Delivery (UK Mainland)
For full details view our shipping page here
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
Any item not in its original condition, is damaged or missing parts for reasons not due to our error
Any item that is returned more than 30 days after delivery
As a leading UK supplier of hydraulic equipment, attachments, and components, we support a diverse range of industries. Our products are trusted in demanding environments where performance, reliability, and expert support are essential.
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Forestry
Construction & Demolition
Transport & Rail
Marine & Offshore
Material Handling
Best practices for keeping your hydraulic system running efficiently.
How do you check oil condition?
Visual inspection for discoloration, foaming, or particles Lab analysis provides a detailed breakdown of contamination, viscosity, acidity, and wear metals This helps determine oil life and potential system issues.
How do you dispose of hydraulic oil?
Collect used oil in approved containers Take it to a licensed waste oil recycling or disposal facility Never pour it into drains or the environment — it’s illegal and harmful.
How do you prevent contamination?
Use sealed containers and clean tools Always clean hose ends and fittings before connecting Install high-quality filtration on return lines and reservoirs Avoid opening the system unnecessarily
How do you store hydraulic hoses?
In a clean, dry, and cool environment Away from direct sunlight, heat sources, and ozone-producing equipment Preferably stored horizontally on racks to prevent kinking or deformation
How often should filters be changed?
At regular service intervals or when a clogging indicator signals high restriction. It’s best to change filters before they reach full capacity to avoid bypassing dirty fluid.
How often should hydraulic oil be changed?
Typically every 2,000 operating hours, or as recommended by the equipment manufacturer. Factors like system cleanliness, load, and temperature can influence intervals. Always verify with oil analysis if unsure.
What is a breather cap?
A breather cap allows air to enter or exit the reservoir as fluid levels change, without letting contaminants in. Some include filters to trap airborne particles or moisture.
What is preventive maintenance in hydraulics?
Scheduled checks and service tasks (e.g., inspecting hoses, changing filters, checking oil) to prevent unexpected failures, extend system life, and reduce downtime.
What tools are used in hydraulic diagnostics?
Pressure gauges to check line pressure Flow meters to measure flow rate Infrared thermometers or thermal cameras to detect hotspots Ultrasonic leak detectors to find air or fluid leaks Test kits for oil sampling
Why should systems be flushed?
Flushing removes contaminants like metal shavings, dirt, or water — especially important after repairs, system assembly, or oil changes. It helps prevent premature wear and failures.
