GB4250 Heavy Duty Band Saw Machine For Steel Mill Raw Material Cutting Manufacturer

The GB4250 Double-Column Horizontal Metal Band Saw Machine is a heavy-duty metal cutting solution designed for large workpieces and a wide range of ferrous and non-ferrous metals.

Developed with reference to advanced foreign band sawing technologies, the GB4250 is specifically designed for applications involving high-hardness alloy metals. Its optimized transmission system, increased main motor power and higher band saw speed provide efficient cutting performance. The machine can achieve even better cutting results when used with the recommended cutting fluid and dedicated band saw blade.

The GB4250 features a large main column and auxiliary column guide structure, providing stable support for the saw frame. The columns are hard-chrome plated to reduce wear and improve service life. Hydraulic saw-frame lifting, bearing-supported blade guides and adjustable tungsten-carbide guide blocks help maintain blade stability and cutting accuracy.

With a maximum cutting capacity of Ø500 mm or 600 mm wide * 500 mm high, the GB4250 is suitable for large steel billets and other oversized metal workpieces.

Key Features

1. Designed for High-Hardness Alloy Materials

The GB4250 was developed specifically with high-hardness alloy metals in mind. Its high-speed, high-efficiency design and reinforced transmission system make it suitable for demanding metal cutting applications.

2. Large Cutting Capacity

The machine is designed for cutting large steel billets with a maximum cutting height of 500 mm and width of 600 mm. The maximum round cutting capacity is Ø500 mm.

3. Stable Main & Auxiliary Column Structure

The saw frame is guided by a large main column and auxiliary small column, creating a stable support structure. The column surfaces are hard-chrome plated to improve wear resistance, precision retention and service life.

4. Reinforced Main Drive System

The GB4250 uses a reinforced transmission system and a 5.5 kW main motor. The worm gear uses tin bronze and precision machining, while the hardened worm is precision-ground. The gearbox housing is made of Meehanite cast iron for reliable transmission performance.

5. Hydraulic Saw-Frame Lifting

The saw frame uses column guidance combined with hydraulic cylinder drive for vertical movement. The hydraulic system also handles workpiece clamping, feeding and material return operations.

6. Adjustable Tungsten-Carbide Blade Guides

The blade guide system uses rolling bearings and adjustable tungsten-carbide guide blocks to support the saw blade. The guide arms can be adjusted according to workpiece dimensions, helping keep the blade perpendicular to the worktable and reducing vibration.

7. Hydraulic Workpiece Clamping

The GB4250 adopts fully hydraulic workpiece clamping. Clamping and releasing are controlled from the operating panel, providing convenient and stable workpiece fixation during cutting. An optional top clamping system is available.

8. Adjustable Band Saw Speed

The band saw provides three selectable speeds:

• 23 m/min
• 42 m/min
• 60 m/min

The feed system also provides stepless feed adjustment, allowing operators to optimize cutting conditions according to the material and workpiece.

9. Heavy-Duty Welded Saw Frame

The saw frame adopts a reinforced welded steel-plate structure with strategically arranged ribs. Vibration stress-relief treatment helps redistribute and eliminate welding stress, improving structural stability during heavy-duty cutting.

10. Optional Motor Frequency Control

The main motor can be equipped with variable-frequency control as an optional configuration. According to the technical document, the optional frequency converter is from Inovance, while other electrical components use Chint products.

11. Optional Electric Material Rack

The standard configuration includes a 1,000 mm roller-type material rack. A 1.5 m electric material rack can be selected as an optional configuration.

Technical Specifications

Applications

The GB4250 is primarily designed for large-size and heavy-duty metal cutting applications. According to the technical document, it is suitable for steel billets with a maximum cutting height of 500 mm and width of 600 mm. By selecting appropriate cutting parameters and speeds, it can cut different soft and hard ferrous and non-ferrous metals.

Steel Billet Cutting

The large cutting capacity makes the GB4250 suitable for large steel billet and metal stock preparation.

High-Hardness Alloy Cutting

The machine was specifically developed with high-hardness alloy metals in mind and can be configured with suitable blades and cutting fluids for these applications.

Large Metal Workpieces

The Ø500 mm round cutting capacity and 600 * 500 mm rectangular capacity make the machine suitable for oversized workpieces that require a heavy-duty horizontal band saw.

Ferrous & Non-Ferrous Metals

With appropriate cutting parameters, the GB4250 can be used for different soft and hard ferrous and non-ferrous metal materials.

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: Are you a manufacturer or a trading company?

A: We are a professional manufacturer of saw blade grinders. We have a 30,000 square meter factory and a team of dedicated technicians specializing in design, manufacturing, and sales.

Q3: How about the payment term?

A: T/T 30% deposit, 70% of balance paid before shipment. (For other payment methods please contact our sales team)

Q4: Does the machine have stepless feed adjustment?

A: Yes. The technical specifications specify stepless feed adjustment, allowing the feed rate to be adjusted according to the cutting application.

Q5: What type of blade tensioning does the GB4250 use?

A: The standard blade tensioning method is manual locking.