What is an MZ Type Grab Gantry Crane and what is it used for?

An MZ Type Grab Gantry Crane is a specialized rail-mounted crane designed for the efficient handling of bulk materials such as coal, ore, grain, sand, gravel, fertilizer, and wood chips . The key differentiator is its grab bucket mechanism—a self-closing, clamshell-like attachment that allows the crane to pick up, transport, and dump loose materials without manual assistance . This makes it an essential piece of equipment in ports, power plants, steel mills, cement plants, and industrial yards where large volumes of dry bulk materials need to be loaded, unloaded, and stockpiled quickly . The crane runs on rails, enabling it to cover a wide working area, and is typically controlled from a cabin or via remote control for precise operation .

What lifting capacities and configurations are available?

MZ Type Grab Gantry Cranes are available in a range of capacities to suit different operational needs. Standard models typically offer lifting capacities from 5 tons up to 50 tons, though custom designs can be engineered for higher capacities . The span, or the distance between the rails, generally ranges from 18 to 35 meters, and lifting heights can be customized to match the working environment, often reaching up to 10 meters or more . While many MZ cranes are built with a double girder structure for enhanced stability and strength, single girder variants are also available for lighter-duty applications . The grab bucket itself can be tailored to the specific material, with options including motorized grabs, hydraulic grabs, and different jaw designs for materials ranging from fine powders to lumpy ore .

What are the main advantages of using an MZ Grab Gantry Crane?

The primary advantage is the remarkable efficiency it brings to bulk material handling, dramatically reducing the need for manual labor and accelerating the entire pick-and-place cycle . By integrating the grab bucket directly into the crane's design, one operator can manage the complete process of digging, lifting, traveling, and dumping bulk materials . The double girder configuration offers high stability and long spans, making it suitable for heavy, continuous operation in demanding environments . Additionally, these cranes are highly versatile, capable of handling a wide variety of materials with different grab types, and their rail-mounted mobility allows them to efficiently service large storage areas .

Double Girder Grab Gantry Crane | Bulk Material Handling

Double Girder Grab-Type Gantry Crane

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For customized products, please fill out information and submit the form.

Capacity:

5-45 ton (customizable)

Lifting Height:

6-30m (customizable)

Voltage/Hertz:

(customizable)

Working Class:

Span:

10-40m (customizable)

Apply: Electric double girder rail travelling gantry crane with bucket is usually used in open-air warehouses or along railways. such as coal blocks and sand.

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Introduction

Technical Data

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PRODUCT INTRODUCTION

The Double Girder Grab Gantry Crane is a heavy-duty material handling solution specifically designed for bulk and loose material operations in outdoor or semi-outdoor environments. Unlike standard hook-type gantry cranes, this crane is equipped with a motor-driven grab bucket (clamshell or orange-peel type) that opens and closes to scoop, transport, and discharge bulk cargo such as coal, ore, sand, slag, scrap metal, or grain. The double girder configuration provides superior rigidity, higher lifting heights, and greater stability compared to single girder designs, making it ideal for heavy-duty, high-cycle applications. Capacities typically range from 5 tons to 30 tons for grab lifting, with spans up to 35 meters."

TECHNICAL DATA

Parameter	Specification	Parameter	Specification
Rated Loading Capacity	5-45ton (customizable)	Max. Lifting Height	6-30m (customizable)
Warranty	1 Year	Video outgoing-inspection	Provided
Rated Lifting Moment	According to your need	Weight (KG)	25100 kg
Product name	Gantry crane with grab bucket	Control Method	Cabin Control
Lifting speed	0~8m/min	Power Source	(customizable)
Working temperature	-25~+45	Machinery Test Report	Provided
Core Components	Engine, Bearing, Gearbox, Motor, Gear	Span	According to your need
Place of Origin	Henan, China	Application	Outdoor
Capacity	50 Tons	Main electrical parts	Famous Brand

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Single Girder European Gantry Crane

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APPLICATION

1.This crane is extensively used in thermal power plants and coal handling yards, where it scoops coal from stockpiles or railcar dump hoppers and transfers it to crusher houses, conveyor feed hoppers, or furnace bunkers, operating continuously with high cycle efficiency and dust control measures.

2.It is essential in port terminals and river docks for bulk cargo unloading, handling materials such as iron ore, bauxite, phosphate, grain, fertilizer, and cement from ship holds to shore-side hoppers or storage piles, with fast cycle times to minimize vessel turnaround.

3.The crane is widely applied in steel mills and scrap recycling centers, using heavy-duty orange-peel grabs to handle shredded scrap, turnings, pig iron, and DRI (direct reduced iron) for furnace charging, baling press feeding, or railcar loading in harsh, abrasive conditions.

4.In cement plants, glass manufacturing facilities, and chemical fertilizer factories, this crane handles raw materials including clinker, gypsum, limestone, soda ash, pet coke, and sand, with sealed grab designs and dust suppression systems to minimize environmental pollution.

5.Additional applications include waste incineration plants, municipal solid waste treatment facilities, and biomass power stations, where the crane mixes, transfers, and feeds heterogeneous waste or biomass fuels (wood chips, bark, agricultural residues) into hoppers or combustion chambers, with grabs designed to resist corrosion and abrasion.

FEATURES

Double girder heavy-duty construction – two parallel box girders provide exceptional rigidity and stability for high-cycle grab operations, minimizing sway and ensuring accurate positioning of the grab bucket.

Dedicated grab hoist mechanism – features two rope drums (closing and supporting) or a motor-driven opening/closing system with synchronized rope reeving for positive grab control without slip or premature opening during transport.

High-duty grab bucket – available in clamshell (for coal, ore, grain), orange-peel (for scrap, rock, irregular shapes), or polyurethane-sealed (for fine powders, cement) designs, with replaceable wear liners and hardened steel tips.

Full electric travel with anti-swing control – independent motors for grab hoist, trolley travel, and gantry bridge travel, with optional VFDs and anti-swing systems to improve cycle times and reduce spillage.

Weather-resistant and dust-proof design – IP54 or higher electrical enclosures, sealed motors, corrosion-resistant paint systems, and optional dust covers for rail and electrical components to withstand outdoor and dusty environments.

A-frame or straight leg with motorized travel – wide-stance A-frame legs for outdoor wind stability, equipped with motor-driven wheels and optional rail sweeps, with duty ratings of A6–A8 for continuous, heavy-duty bulk handling operations.