The GB4280 Gantry Horizontal Band Saw Machine is a heavy-duty horizontal band saw designed for cutting large and heavy metal workpieces. With a double-column gantry structure, hydraulic feeding, hydraulic clamping and platform-type material feeding, the machine provides stable support for demanding large-scale sawing applications.

The GB4280 is mainly designed for cutting round discs, large cylindrical workpieces, shafts, square forged blocks and the end faces of large forgings. It is suitable for sawing various ferrous metals and is designed to provide high cutting efficiency, narrow kerf, material savings and simple operation.

With a maximum cutting capacity of Ø800 mm / 800 * 800 mm, the machine is suitable for large-diameter and large-section workpieces that require stable and reliable cutting performance.

The GB4280 uses platform sliding-carriage feeding rather than conventional roller feeding. The workpiece is placed on the feeding carriage, which moves forward and backward through hydraulic control. This configuration is particularly suitable for handling large or irregular workpieces.

Key Features

1. Heavy-Duty Double-Column Gantry Structure

The GB4280 adopts a welded double-column gantry structure to provide reliable support and improve machine stability during heavy-duty sawing.

The machine columns use welded steel construction, with linear guide rails arranged to provide stable saw-frame movement. The saw frame is driven by two hydraulic cylinders simultaneously, helping maintain stable lifting and lowering movement.

2. Large 800 mm Cutting Capacity

The GB4280 provides a maximum sawing capacity of:

• Round workpiece: Ø800 mm
• Square workpiece: 800 * 800 mm

This makes the machine suitable for large shafts, cylindrical components, forged blocks and other heavy metal workpieces.

3. Hydraulic Stepless Feed Control

The saw-frame feed is controlled hydraulically with stepless speed adjustment, allowing the cutting process to be adapted to different materials and workpiece conditions.

4. Hydraulic Double-Vise Clamping

The machine uses front and rear hydraulic vise cylinders to clamp the workpiece. The dual-vise design helps maintain better material parallelism during cutting and provides stable workpiece positioning.

5. Hydraulic Automatic Blade Tensioning

The band saw blade is tensioned hydraulically. After the blade is installed on the drive and tension wheels, the hydraulic cylinder drives the tension wheel to apply blade tension, making operation more convenient.

6. Carbide Blade Guide System

The machine uses movable and fixed guide arms. The guide seats use carbide components on the top and sides, together with a pre-guide system to improve blade guidance stability and help extend blade service life.

7. Stable Reinforced Saw Frame

The saw frame uses high-quality steel plates with reinforced welded construction. After vibration stress relief treatment, welding stresses are redistributed and reduced, helping improve the stability of the saw frame during operation.

8. Efficient Cooling and Chip Cleaning

The GB4280 uses a centralized cooling pump to supply coolant to the cutting area. Cooling points are arranged around the left and right guide arms and above the saw blade.

A passive chip-cleaning wheel is also provided to remove metal chips from the saw blade and help extend blade service life.

9. Platform Sliding-Carriage Feeding

Unlike a conventional roller feeding system, the GB4280 uses a platform sliding-carriage feeding system.

The workpiece is placed on the carriage, which moves forward and backward through hydraulic control. Feeding and return movements are controlled by buttons.

The specified feeding stroke is 1000 mm, while the material carriage is 1500 * 800 mm.

10. Stable Main Transmission

The main transmission consists of a worm gear reducer and drive wheel. The reducer is directly connected to the drive wheel, providing a rigid transmission structure, low noise and stable power transmission.

Technical Specifications

Application

The GB4280 is designed for large-scale and heavy-duty metal sawing applications, particularly where conventional material feeding systems may not be suitable.

Typical Workpieces

Large Forged Shaft Blanks

The machine is suitable for sawing large forged shaft blanks and other large-diameter shaft materials.

Typical applications may include large shaft blanks requiring subsequent machining.

Large Cylindrical Workpieces

The Ø800 mm maximum round cutting capacity allows the machine to process large cylindrical metal components.

Round Discs and Forgings

The GB4280 is designed for cutting round-disc type workpieces and large forgings.

Square Forged Blocks

The machine can handle square workpieces up to 800 * 800 mm, making it suitable for large forged blocks and heavy metal sections.

Large Forging End-Face Cutting

The machine can also be used for sawing the end faces of large forgings, making it suitable for heavy forging-related applications.

Suitable Industries

Based on the machine's intended applications, the GB4280 can be used in industries involving large and heavy metal workpieces, including:

• Forging
• Heavy machinery manufacturing
• Steel processing
• Shaft manufacturing
• Energy equipment manufacturing
• Industrial equipment manufacturing

For specific material grades, dimensions and production requirements, the machine configuration should be evaluated according to the actual application.

FAQ

Q1: Where is your factory located?

A: Our factory is located in Nantong City, Jiangsu Province, China. It will takes about 1.5 hours from Shanghai Hongqiao station to our city.

Q2: What is your factory acceptance test method?

A: You can send us sample material to be cut, and we will perform a test cut using our machine. After the test is complete, we will provide you with detailed cutting data. (We will also send you a video of the machine cutting operation for your confirmation.)

Q3: Does the band saw blade have any international certifications?

A: Yes, we have obtained CE, ISO international

Q4: What type of feeding system does the GB4280 use?

A: The GB4280 uses a platform sliding-carriage feeding system. The workpiece is placed on the carriage and the carriage moves forward and backward through hydraulic control.

Q5: What type of machine structure does the GB4280 use?