The GZ4250 Fully Automatic Horizontal Band Saw Machine is a high-capacity CNC horizontal band saw designed for efficient and accurate cutting of large metal workpieces. Featuring a sawing-between-the-vises structure, the machine provides stable workpiece support during cutting and helps reduce material movement and cutting vibration.
With a maximum cutting capacity of Ø500 mm for round materials and 500 mm for plate materials, the GZ4250 is suitable for processing large-diameter steel bars, plates, shafts, blocks, and other metal materials.
The machine integrates PLC control, touchscreen operation, hydraulic feeding, hydraulic clamping, and grating-scale positioning. Operators can preset cutting length and quantity through the control system, allowing the machine to automatically complete feeding, clamping, cutting, counting, and stopping.
The GZ4250 also supports bundle cutting, making it suitable for continuous and batch production. Its rigid machine structure, precision blade guidance system, balanced transmission system, and dual-vise clamping help maintain stable cutting performance and high dimensional accuracy. The specified cutting dimensional accuracy is ±0.2 mm, while the cut-surface perpendicularity meets national standards.
Key Features
1. Sawing Between the Vises
The GZ4250 features a sawing-between-the-vises structure, with the workpiece securely supported during the cutting process. The front and rear clamping arrangement helps maintain workpiece stability and reduces movement during cutting, contributing to improved cutting accuracy.
2. Large Ø500 mm Cutting Capacity
The machine can cut round materials up to Ø500 mm and plate materials up to 500 mm, making it suitable for large-size metal processing applications.
3. Fully Automatic CNC Control
The PLC control system and touchscreen interface allow operators to digitally set cutting parameters and quantities. Once the automatic cycle starts, the machine can perform the programmed cutting process and automatically stop after the preset quantity is completed.
4. Hydraulic Feeding with Grating-Scale Positioning
The rear hydraulic feeding system uses a grating scale for positioning. The single feeding stroke can be set from 2 to 600 mm, while longer lengths can be achieved through multiple feeding cycles.
5. Hydraulic Clamping for Stable Cutting
The workpiece is hydraulically clamped, while the two-vise configuration helps maintain continuous workpiece support during cutting. The right vise is equipped with a hydraulic cylinder that works together with the left vise to reduce mechanical friction during automatic feeding and cutting.
6. Bundle Cutting Capability
The GZ4250 is equipped with a bundle cutting device, allowing multiple pieces of material to be arranged within the permitted width and height and cut simultaneously. This can improve productivity for repetitive batch-cutting operations.
7. Three Blade Speed Options
The band saw provides three blade speeds of 30, 50, and 70 m/min, allowing the cutting process to be adjusted according to different material and cutting requirements.
8. Precision Blade Guide System
The adjustable blade guide system includes guide arms, guide wheels, wear-resistant guide blocks, and a dual-bearing structure on the back of the blade. These components help maintain blade alignment, reduce vibration, and improve cutting stability.
9. Rigid Welded Machine Structure
The base and saw frame use welded steel structures treated through vibration aging. This helps reduce welding deformation and improve structural stability during long-term operation.
10. Stable Transmission System
The main transmission uses a worm gear and worm shaft system, while the transmission mechanism is precisely balanced to reduce vibration during operation. A hydraulic cylinder and precision hydraulic feed-control valve provide stepless control of the blade feed rate.
11. Automatic Chip Removal and Cooling
A passive wire-wheel chip brush removes chips from the band saw blade, while the cooling system cleans the blade teeth and helps prevent chip accumulation. This helps improve cutting efficiency and extend blade service life.
12. High Cutting Accuracy
The machine uses precision band saw wheels and adjustable carbide blade-holding components. Combined with stable clamping and balanced transmission, the GZ4250 is designed for consistent cutting accuracy. The specified dimensional accuracy after cutting is ±0.2 mm, with cut-surface perpendicularity meeting national standards.
13. Automatic Safety Protection
The machine is equipped with automatic shutdown protection in the event of blade breakage. A circuit breaker protects the main power supply, while the hydraulic system uses 24V safety-voltage control to improve operational safety.
Technical specifications
| Model |
Unit |
GZ4250 |
| Machine size |
mm |
2400x3000x1800 |
| Square bar&angle bar |
mm |
500*500 |
| Bar stock |
mm |
Φ500 |
| Saw band speed |
m/min |
30,50,70 |
| Main motor power |
kw |
5.5 |
| Hydraulic motor power |
kw |
1.5 |
| Cooling motor power |
kw |
0.09 |
| Hydraulic fluid capacity |
L |
80 |
| Cutting fluid capacity |
L |
50 |
| Saw band tension |
|
Manual |
| Clamping method |
|
Manual-Hydraulic combination |
| Feeding method |
|
Hydraulic feeding |
| Band saw blade size |
|
1.3x41x5780mm |
| Hydraulic tank capacity |
Mpa |
2-2.5 |
| Power supply |
|
AC 380V,50Hz |
| Feeding rack |
mm |
2x600 |
The GZ4250 is engineered for large-size, repetitive, high-volume and high-efficiency metal cutting scenarios. Boasting generous cutting capacity, stable automatic feeding system, robust hydraulic clamping mechanism and reliable bundle cutting capability, this band saw machine delivers consistent performance and broad adaptability to diversified metal processing tasks. It stands out especially for working conditions involving long-cycle continuous cutting, flexible multi-size blanking and high-volume batch manufacturing. Equipped with bundle cutting function, the machine is capable of clamping and cutting multiple workpieces at one time, drastically boosting hourly output and lowering unit processing cost. It is widely adopted in machinery factories, forging plants, automotive component suppliers, bearing factories and metal material distributors who pursue stable cutting quality and improved production efficiency.
Typical Applications
- Large-diameter solid steel bar cutting
- Round steel, alloy steel and carbon steel cutting
- Shaft blanks and forged component cutting
- Thick steel plate and rectangular billet cutting
- Solid metal block and heavy ingot cutting
- Bearing blank manufacturing
- Standard fastener and hardware parts manufacturing
- Automotive structural parts and chassis component processing
- Steel structure fabrication and metal engineering processing
- General precision machining workshop production
- Mass batch production and uninterrupted continuous cutting
FAQ
Q1: What is your method of transaction?
A: We adopt the FOB(Free ON Board) transaction.
Q2: How about your delivery time?
A: Generally, it will take 7-60 work days after receiving your order. The specific delivery time depends on the items and the quantity of your order.
Q3: Does the band saw blade have any international certifications?
A: Yes, we have obtained CE, ISO international
Q4: 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.
Q5: Does the machine have blade-break protection?
A: Yes. If the band saw blade breaks, the machine automatically stops to help protect the equipment and improve operational safety.
Q6: Can it cut bundles of material?
A: Yes. The machine is equipped with a bundle cutting device for simultaneous cutting of multiple workpieces.
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