Gantry Metal Shear

The gantry shear (also known as the portal shear or upgraded crocodile shear) is a large-scale metal processing machine that uses a hydraulic or mechanical transmission system to drive the blades in a reciprocating cutting motion. Its core design draws inspiration from the sturdy frame structure of a “gantry crane,” combining a high-rigidity machine body with a powerful shearing system. It is specifically designed for processing large-sized, high-hardness metal scrap and is widely used in heavy industries such as scrap metal recycling, automobile dismantling, metallurgy and casting, and ship dismantling.

Working video of gantry shearing machine

Large Metal Shears Product Introduction

The structural principle of the gantry shearing machine

Gantry frame

• Constructed from high-strength steel plates welded into a “door” shape structure, optimized through finite element analysis, it can withstand shear forces of several thousand tons without deformation.
• Typical dimensions: span 3-8 meters, height 2-5 meters, suitable for the shearing requirements of different specifications of metal materials.

hydraulic transmission system

• Power source: An electric motor drives a high-pressure oil pump to deliver hydraulic oil to various actuators.
• Core components:
• Shearing cylinder: Pushes the blade to perform vertical shearing actions.
• Pressure cylinder: Secures the metal material to prevent slippage during shearing, improving shearing accuracy.
• Feed cylinder: Automatically pushes the metal material into the shearing area to enable continuous operation.
• Advantages: Compared to mechanical transmission, hydraulic systems feature low noise, minimal impact, and strong overload protection capabilities.

blade system

• Material: Made of alloy tool steel such as H13 and D2, laser hardened to a hardness of HRC58-62.
• Design: Adjustable cutting edge to accommodate different thicknesses of metal; some models are equipped with rotating blades to extend service life.

Product parameters of scrap metal cutting machine

Product model	Maximum shear force	Bin size (mm)	Opening height (mm)	Knife edge length (mm)	Output (t/h)	Shear frequency (times/minute)	Main motor (kW)
315	3150	3000*1200*800	400	1200	4-8	3-4	90
630	6300	800*1800*900	500	1800	4-8	3-4	225
1250	1250	8000*2000*1200	700	2000	4-8	3-4	405

Metal shearing equipment for multifunctional use

The shearing machine equipment is mainly suitable for cutting metal sheets such as steel plates, angle steels, channel steels, steel bars, square steels, square tubes, and scrap aluminum alloys.

Core application scenarios

Scrap metal recycling

• Scrap car bodies, industrial scrap steel, steel structures, etc. are cut into standard sizes for easy re-melting in furnaces.
• Case study: After using a gantry shear, a recycling plant in China increased its metal recovery rate from 85% to 98.7% and achieved a daily processing capacity of 300 tons.

car dismantling

• Shear high-strength boron steel from the A-pillar, B-pillar, chassis, etc. of automobiles, and then flatten the car body with a compression device before cutting it.
• Efficiency: The processing time for a single car has been reduced from 2 hours to 18 minutes.

metallurgical industry

• Shearing precious metals such as nickel plates and titanium plates to meet aerospace-grade flatness requirements.
• Case study: Baowu Group used a 1,500-ton gantry shear to reduce nickel plate shearing costs by 40%.

Ship dismantling

• Cut the steel plates of the ship’s hull and use flame cutting to complete the dismantling of large structures.

Metal Shearing Equipment Product Features

1. Add a high-pressure filter to the hydraulic system. The hydraulic oil needs to pass through a high-pressure filter before entering the pipeline and hydraulic control valve. (High pressure filter comes with alarm)
2. Independent air cooling: This machine adopts a high air flow air cooling machine to control the oil temperature of the hydraulic oil within the normal range of use. At the same time, the air-cooled machine solves the problem of inconvenient water sources due to the occupied area of the water cooler.
3. PLC manual automatic control box. Can achieve manual and automatic replacement. Equipped with a remote control for remote start, stop, and automatic operation.
4. Pushing groove with pressure cover: It can achieve automatic feeding and simultaneously push the material along the pressure cover to the main cutting machine for cutting.
5. Connecting device at the front end of the cylinder rod. Effectively protect the cylinder rod from damage.

Metal shears for sale at favorable prices

We have consulted and followed up with our cooperative clients from countries such as the United States, Canada, Mexico, Germany, Russia, and Italy on the effectiveness of using gantry shearing machines. They have given a very satisfactory response, stating that the failure rate is very low, the cutting surface is large, and the operation is safe.

How to choose a suitable gantry shearing machine

When choosing a gantry shearing machine, the following points need to be considered:

1. Cutting ability: Select the appropriate cutting ability according to actual needs to adapt to the specifications and thickness of the material to be cut.
2. Blade material: The material of the blade directly affects the cutting effect and efficiency, and high-quality alloy steel and other high-strength, wear-resistant materials need to be selected.
3. Transmission system: The stability and reliability of the transmission system determine the overall performance and service life of the equipment, and high-quality transmission components and designs should be selected.
4. Automation level: Choose manual, semi-automatic, or fully automatic gantry shearing machines as needed to improve production efficiency and reduce labor costs.
   (Suitable machine models can be customized according to specific customer needs)

Metal Shearing Machine Price, Shearing Machine Equipment Manufacturer

As a “heavy-duty weapon” in the field of metal processing, the gantry shear is continuously promoting global circular economic development through technological innovation. From Mumbai to Rotterdam, from Detroit to Shanghai, this equipment has become an indispensable part of modern industrial infrastructure.