GB4250 High efficiency metal cutting band saw for rail transit ship building process

Product Introduction

The GB4240 Main & Auxiliary Column Horizontal Band Saw Machine is a heavy-duty horizontal metal band saw designed for efficient and stable cutting of a wide range of metal materials.

The machine is mainly designed for cutting round tubes, square tubes, plates, and other common metal materials. With a rigid welded structure, hydraulic workpiece clamping, hydraulic saw frame lifting, and continuously adjustable cutting feed, the GB4240 provides a reliable solution for medium- and small-batch metal cutting applications.

The GB4240 combines mechanical, electrical, and hydraulic systems to complete workpiece clamping, saw beam lifting, cutting feed, and material return operations. A roller-type material support rack is also provided to make workpiece positioning and handling more convenient.

Its reinforced saw frame, precision blade guide system, hydraulic clamping system, and stable transmission structure help reduce vibration and improve cutting stability during operation.

Key Features

1. Main & Auxiliary Column Structure

The GB4240 adopts a main and auxiliary column horizontal band saw structure, providing a rigid support structure for the saw frame during heavy-duty cutting operations.

The saw frame is manufactured from high-quality steel plates with reinforcing ribs and undergoes vibration stress-relief treatment to reduce welding stress and improve structural stability.

2. Hydraulic Workpiece Clamping

The machine uses a fully hydraulic clamping system.

The hydraulic cylinder drives the left vise to securely clamp the workpiece. Clamping and releasing can be controlled directly from the operating panel, making the operation simple and convenient.

An upper clamping system is also available as an optional configuration for applications requiring additional workpiece stability.

3. Continuously Adjustable Cutting Feed

The cutting feed is controlled hydraulically and can be continuously adjusted, allowing the operator to select a suitable feed rate according to the material, workpiece size, and cutting requirements.

This helps improve cutting stability and allows the machine to adapt to different metal cutting applications.

4. Four Band Saw Speeds

The GB4240 provides four selectable band saw speeds:

30 / 45 / 60 / 80 m/min

This allows operators to choose an appropriate blade speed for different materials and cutting conditions.

5. Adjustable Hydraulic Saw Beam

The saw beam is driven vertically by a combination of the columns and hydraulic cylinder.

The lifting range is 0–400 mm, with limit-switch positioning. The position can be adjusted according to the height of the workpiece.

6. Precision Band Saw Blade Guidance

The blade guide system consists of left and right guide arms and guide heads.

Both guide arms can move along the dovetail structure, allowing the distance between the guides to be adjusted according to the workpiece size. The guide system incorporates rolling bearings and wear-resistant guide blocks to help maintain blade stability and reduce vibration during cutting.

7. Rigid Welded Machine Structure

The machine bed is constructed from a welded box-type steel structure, while the machine bed itself uses a cast-iron component mounted on the base.

Vibration stress-relief treatment is applied to the welded structure to reduce welding deformation and improve machine stability.

8. Stable Worm Gear Transmission

The main transmission uses a worm gear system.

The worm gear is manufactured from tin bronze and precision-machined, while the hardened worm is ground on a precision worm grinding machine. The gearbox body uses Meehanite cast iron to provide high machining accuracy and long service life.

9. Electrical-Hydraulic Integrated Control

The electrical and hydraulic systems work together to control:

• Saw beam lifting
• Workpiece clamping
• Material feeding
• Material return

The hydraulic circuit consists of the pump, valves, cylinders, oil tank, pipelines, and integrated hydraulic components. The oil tank capacity is approximately 30 L or more.

10. Roller-Type Material Support

The GB4240 is equipped with a roller-type standard material support rack with a standard length of 1000 mm, providing convenient support and positioning for workpieces during cutting.

Technical Specifications

Applications

The GB4240 horizontal metal band saw machine is suitable for a variety of metal cutting applications.

Round Tube Cutting

The machine can be used for cutting round tubes up to a maximum specified diameter of Ø400 mm.

Square & Rectangular Tube Cutting

For rectangular workpieces, the specified maximum cutting capacity is 500 * 400 mm, making the GB4240 suitable for larger structural and industrial metal sections.

Metal Plate Cutting

The GB4240 can also be used for cutting plate-type metal workpieces and various common metal materials.

General Metal Processing

With adjustable blade speed, continuously variable hydraulic feed, and hydraulic clamping, the machine can be used in general metalworking applications where stable and efficient sawing is required.

Typical Applications

The GB4240 can be considered for:

• General metal fabrication
• Steel structure manufacturing
• Machinery manufacturing
• Metalworking workshops
• Tube and profile processing
• Plate cutting
• Medium- and small-batch material preparation

The original technical document specifically describes the GB series as suitable for medium- and small-batch cutting applications.

FAQ

Q1: What is your method of transaction?

A: We adopt the FOB(Free ON Board) transaction.

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:Is an upper clamping system available?

A:Yes. The standard configuration includes hydraulic workpiece clamping, and one set of upper clamping can be optionally equipped when additional workpiece stability is required

Q5:Does the GB4240 use hydraulic clamping?

A:Yes. The machine uses a fully hydraulic workpiece clamping system. The clamping and releasing operations can be controlled from the operating panel.