Material Handlers

A material handler is a hydraulic machine built to load, unload, sort and move bulk material with a grab, a magnet or another handling tool, rather than to dig. It looks like an excavator, with an upper structure that rotates on a slewing ring and a boom and arm at the front, but it is designed differently: the cab can be raised high above the machine so the operator sees into trucks, ships and piles, the front equipment is longer and built for reach rather than breakout force, and the machine is designed for continuous handling cycles, often for many hours a day.

Material handlers are the standard machines in scrap and recycling yards, ports, timber yards, biomass plants and waste processing facilities. They can be mounted on wheels, crawler tracks, rails, pedestals or pontoons, and they range from compact machines for small yards to very large units that unload ships.

Brief History of Material Handlers

Before hydraulic machines, bulk material in ports, steelworks and scrapyards was handled by cranes with clamshell grabs and electromagnets, by cable excavators and by fixed gantry installations. Hydraulic excavators fitted with grabs began to take over part of this work as they spread from the 1960s, and German manufacturers played an important role in developing dedicated handling machines. Companies such as Sennebogen and Fuchs built machines specifically for loading and handling timber, scrap and bulk goods, with elevated cabs and long, curved booms.

From the 1980s and 1990s material handlers became a separate product category, clearly distinct from excavators. Hydraulically elevating cabs, electric drive options for fixed installations, specially shaped booms and dedicated undercarriages were introduced. The growth of steel recycling, container and bulk ports, and biomass energy increased demand, and today most large excavator manufacturers offer at least some material handler models alongside the specialist brands.

How a Material Handler Works

Undercarriage. Wheeled handlers use two axles with outriggers or a combination of outriggers and a blade. Crawler handlers use wide undercarriages for stability. Rail-mounted handlers run on a track along a quay or storage area, while pedestal machines are fixed in one place.
Upper structure. The engine or electric motor, hydraulic pumps, counterweight and cab sit on a slewing ring and rotate through 360 degrees. Counterweights are heavy, because the machine lifts loads at long reach.
Elevating cab. The cab is mounted on a hydraulic riser, a parallelogram or a fixed tall column, so the operator can look down into trucks, rail cars, containers and ship holds.
Handling front. The boom and arm are designed for reach and lifting rather than digging. A straight or curved boom and an arm with a grab or magnet linkage are typical, and cylinders are often protected against damage from scrap.
Tools and hydraulics. Additional hydraulic circuits rotate and open grabs. Magnet machines carry a generator or take power for the electromagnet.
Drive. Most mobile handlers have diesel engines, while stationary and rail machines are often electric and connected to the power grid.

Types of Material Handlers

Wheeled Material Handlers

The most common type, used in scrapyards, recycling plants and ports. They can move around the yard on their own wheels and are stabilised by outriggers when working.

Crawler Material Handlers

Used on soft ground, in large scrap and waste yards and where the machine needs to move while carrying loads. Some are built on very wide or raised undercarriages.

Rail-Mounted and Gantry-Base Machines

Handlers running on rails or on a portal base along a quay, allowing trucks or rail cars to pass underneath while the machine unloads ships or loads trains.

Stationary and Pedestal Handlers

Machines mounted on a fixed pedestal, a column or a pontoon, usually with electric drive. They are used at feed points for shredders and crushers, at quays, and on barges.

Excavator-Based Handlers

Standard excavators fitted with raised cabs, handling fronts and grab or magnet circuits. They cover lighter handling duties and are popular in smaller recycling yards.

Size Classes

Class	Typical operating weight	Typical use
Compact	about 15 to 25 t	Small recycling yards, timber, waste sorting
Medium	about 25 to 60 t	Scrap yards, shredder feeding, truck and rail loading
Large	about 60 to 150 t	Port handling, ship unloading, heavy scrap
Very large	above 150 t	Bulk terminals and large ship unloading

Figures are indicative and vary by manufacturer.

Attachments

The choice of tool defines the work a material handler can do.

Orange peel grabs, with several tines, for scrap and mixed waste.
Clamshell buckets for bulk goods such as coal, grain, fertiliser, sand and ore.
Electromagnets for ferrous scrap.
Timber and log grabs for wood and biomass.
Sorting and demolition grabs for recycling.
Shears for cutting scrap, on suitable machines.
Hooks and lifting tools for general cargo.

Tool choice also affects the machine specification. Magnet work needs a generator and a suitable electrical system, rotating grabs need an extra hydraulic circuit, and heavy clamshells reduce the reach at which the machine can work safely. In ports, contractors often keep several grabs of different capacities so that the same handler can unload materials of different density.

Main Manufacturers

Sennebogen, a German specialist with a wide range of material handlers.
Liebherr, with wheeled, crawler, rail and stationary handlers and large port machines.
Terex Fuchs, the Fuchs brand of German origin now part of Terex.
Caterpillar, with MH-series wheeled handlers.
Komatsu, Volvo Construction Equipment, Hyundai and Develon (formerly Doosan), with handlers mostly based on their excavator ranges.

Main Uses of Material Handlers

Scrap sorting, loading and shredder feeding in metal recycling.
Handling municipal, industrial and construction waste.
Unloading and loading ships and barges in ports and inland terminals.
Timber, log and biomass handling in sawmills and energy plants.
Loading rail cars and trucks at bulk terminals.
Handling bulk materials in steelworks and industrial plants.

Choosing a Material Handler

Define the reach and lift. Measure the distance to the far side of trucks, rail cars or ship holds, and the heaviest loads at that distance.
Choose the cab height. The operator must see into the load. A hydraulically elevating cab is flexible, while a fixed high cab is simpler.
Mobile or fixed. A machine that stays at one feed point or quay can often be electric and stationary, which reduces fuel and maintenance costs.
Pick the undercarriage. Wheels suit paved yards and frequent moves, crawlers suit soft ground, and rails or gantry bases suit quays.
Match the tool and hydraulics. Grabs, magnets and shears need suitable hydraulic circuits and electrical systems.
Plan for protection. Scrap and waste damage cylinders, tyres and windows. Guards, solid tyres and protected hoses reduce downtime.
Consider the working hours. Machines working two or three shifts a day justify more investment in comfort, electric drive and automatic lubrication than machines used occasionally.

Safety

Material handlers work in busy yards and ports where people, trucks and machines share space. The main risks are people struck by the rotating upper structure or falling material, loss of stability when lifting at long reach, and objects falling from grabs or magnets, especially when a magnet loses power. Operators should follow the load charts, lower outriggers before working, keep loads low when travelling and avoid swinging over people or cabs. Exclusion zones, cameras, good lighting and clear traffic plans are important. Access to the elevated cab must be safe, with handrails and emergency escape routes. Fire risk is significant in waste and scrap handling, so fire suppression systems are common.

Trends and Technology

Electric material handlers connected to the grid are widespread in fixed installations and are increasingly used in mobile versions with cables or batteries, especially in ports and indoor plants. Energy recovery systems store energy when the boom is lowered and reuse it when lifting. Cameras, radar and assistance systems help operators in crowded areas, and telematics support fleet management. Some manufacturers offer remote operation from a control room, which is being tested in port and recycling applications.

Key Terms

Elevating cab: a cab that rises hydraulically to give the operator a view into trucks and ships.
Orange peel grab: a grab with several curved tines, typical for scrap.
Electromagnet: a lifting magnet used for ferrous scrap.
Pedestal machine: a handler mounted on a fixed base.
Shredder feeding: loading scrap into a shredder, a common material handler task.
Load chart: data showing the loads the machine can handle at each reach.

Frequently Asked Questions

What is the difference between a material handler and an excavator? An excavator is designed for digging, with high breakout force. A material handler is designed for lifting and handling at reach, with an elevated cab and handling tools.

Can an excavator be used as a material handler? For lighter work, yes. Excavators with raised cabs and handling equipment are common in smaller yards, but dedicated handlers offer more reach, visibility and durability for full-time handling.

Why are many material handlers electric? Fixed and rail-mounted machines work in one place for long hours, so connecting them to the grid reduces fuel costs, emissions, noise and maintenance.

How large is a port material handler? Port machines range from medium wheeled handlers to very large rail or pedestal machines weighing well over 100 tonnes.