The GZ4250 Fully Automatic Horizontal Band Saw Machine is a high-capacity CNC horizontal band saw designed for efficient, stable, and accurate cutting of large metal workpieces. With a maximum cutting capacity of Ø500 mm for round materials and 500 mm for plate materials, it is suitable for demanding metal cutting and batch production applications.
The machine integrates PLC control, touchscreen operation, hydraulic clamping, hydraulic feeding, and grating-scale positioning to provide a high level of cutting automation and positioning accuracy. The hydraulic system allows stepless adjustment of feed speed, making it possible to optimize the cutting process according to different materials and working conditions.
The GZ4250 supports both automatic and manual cutting modes. Operators can set the required cutting length and quantity through the touchscreen, and the machine automatically completes feeding, clamping, cutting, counting, and stopping after the preset quantity is finished. This reduces manual intervention and improves production efficiency for continuous and batch cutting.
With a rigid welded structure, precision band saw wheels, adjustable carbide guide blocks, dual-bearing blade guidance, and front-and-rear workpiece clamping, the GZ4250 is engineered for stable cutting performance and long-term operation. The specified dimensional accuracy after cutting can reach ±0.2 mm, while the cut surface perpendicularity meets national standards.
Key Features
1. Large Cutting Capacity
The GZ4250 provides a maximum cutting capacity of Ø500 mm for round materials and 500 mm for plate materials, making it suitable for large-diameter steel bars, shafts, blocks, plates, and other metal workpieces.
2. Fully Automatic CNC Operation
The PLC-based control system with touchscreen interface allows operators to set cutting length and quantity digitally. Once the machine starts the automatic cycle, it can perform feeding, clamping, cutting, counting, and automatic stopping with minimal operator intervention.
3. Hydraulic Feeding with Grating-Scale Positioning
The rear hydraulic feeding system works together with a grating scale for accurate material positioning. A single feeding stroke can be set from 2 to 600 mm, while longer lengths can be achieved through multiple feeding cycles.
4. Hydraulic Workpiece Clamping
Hydraulic clamping provides stable workpiece fixation during cutting. The machine uses front and rear clamping arrangements so that at least one vise remains clamped during operation, helping prevent workpiece movement and improving cutting stability.
5. Bundle Cutting Capability
The GZ4250 is equipped with a bundle cutting device. Multiple workpieces can be arranged within the specified width and height range for simultaneous cutting, making the machine particularly suitable for batch production and repetitive cutting operations.
6. Three Blade Speeds
The band saw blade offers three selectable speeds of 30, 50, and 70 m/min, allowing operators to select an appropriate cutting speed for different materials and cutting requirements.
7. Precision Blade Guide System
The blade guide system uses adjustable guide arms, guide wheels, wear-resistant guide blocks, and a dual-bearing structure on the back of the blade. The design helps maintain proper blade alignment, reduce vibration, improve cutting stability, and reduce blade damage during operation.
8. Rigid and Stable Machine Structure
The base and saw frame are constructed using welded steel structures and undergo vibration aging treatment to reduce welding deformation and redistribute internal stresses. This provides improved structural rigidity and long-term dimensional stability.
9. Efficient Chip Removal and Cooling
A passive wire-wheel chip brush removes chips remaining on the band saw blade, while the cooling system helps clean the blade teeth and prevent chip accumulation. This contributes to improved cutting efficiency and extended blade service life.
10. High Cutting Accuracy
The machine combines precision band saw wheels, adjustable carbide blade guide components, balanced transmission, hydraulic feed control, and dual-vise clamping to improve cutting stability and accuracy. The specified dimensional accuracy after cutting is ±0.2 mm, with cut-surface perpendicularity meeting national standards.
11. Automatic Safety Protection
The machine features automatic shutdown in the event of blade breakage. The main power supply is equipped with a circuit breaker, while the hydraulic system uses 24V safety-voltage control, providing additional protection during operation and maintenance.
Technical specifications
| Model |
Unit |
GZ4250 |
| Machine size |
mm |
2400*3000*1800 |
| Square bar &angle bar |
mm |
500*500 |
| Bar stock |
mm |
Φ500 |
| Saw band speed |
m/min |
30,50,70 |
| Saw band size |
|
5780*41*1.3 |
| 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 |
| Hydraulic system pressure |
Mpa |
2-2.5 |
| Power supply |
|
AC 380V,50Hz |
| Maximum single feeding length |
|
600mm |
Applications
The GZ4250 is designed for large-volume and high-efficiency metal cutting operations. Its large cutting capacity, automatic feeding system, hydraulic clamping, and bundle cutting capability make it suitable for industries requiring repetitive and consistent cutting performance.
Typical applications include
- Steel bar cutting
- Round steel and shaft cutting
- Large-diameter metal material processing
- Steel plate and block cutting
- Forged component preparation
- Bearing manufacturing
- Standard parts manufacturing
- Automotive parts manufacturing
- Metal fabrication and machining
- Batch and continuous production
The machine is particularly suitable for applications requiring continuous cutting of the same or multiple material specifications, as well as batch cutting where automation and production efficiency are important.
FAQ
Q1: 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.
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: 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.
Q4: What safety features are included?
A: The GZ4250 is equipped with automatic shutdown protection in the event of blade breakage, a main power circuit breaker, and a 24V safety-voltage hydraulic control system.
Q5: Is the GZ4250 suitable for batch production?
A: Yes. Its automatic feeding, automatic counting, bundle cutting capability, and programmable cutting functions make it suitable for continuous and batch production.
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