380V 3.7kW Air Cooled ER25 Spindle Motor
Explore our efficient and reliable General Air Cooled Spindle series. As a classic Air-Cooled Spindle, it ensures stable, long-term operation through forced air cooling, eliminating the need for complex water-cooling systems. Whether you're a beginner or seeking a cost-effective solution, our air cooling spindle and Air Cooled Router Spindle meet fundamental requirements for precision and durability, making them the ideal starting point for any CNC project.
■ Product Description
■ Technical Parameters
| Model | STF60-135B-3.7-ER25 |
| Power | 3.7kW |
| Voltage | 380V |
| Current | 8.8A |
| Poles | 2 |
| Torque | 1.96Nm |
| Speed | 18000rpm |
| Frequency | 300Hz |
| Cooling | Air |
| Tool interface | ER25 |
■ Product Advantages
High Efficiency and Strong Torque (3.7kW)
The 3.7kW provides ample power reserve, capable of driving larger diameter tools and supporting higher feed rates and cutting depths. This ensures a high material removal rate for medium-hardness materials, suitable for continuous heavy-load work.
Ultimate Rigidity from Flying Edge Structure
The short nose (flying edge) design pulls the tool clamping point infinitely close to the spindle bearings, which greatly enhances the bending rigidity at the spindle end. This effectively suppresses vibration during medium-to-heavy cutting or rapid tool change operations, ensuring machining precision and tool life.
Optimized for Automatic Tool Changer (ATC) Systems
This spindle structure is the ideal companion for ATC systems (typically paired with BT30/ISO30 holders), enabling fast and reliable automatic tool changes, significantly increasing the automation level and efficiency of multi-process production.
Convenience and Reliability of the Air-Cooled System
Uses an integrated fan for cooling, completely eliminating the maintenance needs of external water circulation systems. Reliability is high, making it particularly suitable for continuous operation in industrial environments with dust, varying ambient temperatures, or where water line maintenance is inconvenient.
Industrial-Grade Stable Design
The square structure and optimized internal components make it suitable for long-term, high-load continuous industrial operations, offering stable performance and a low failure rate.
■ Application Scenarios
Automated Panel Furniture Machining Centers
Applicable to CNC nesting machines and machining centers equipped with ATC systems, performing high-efficiency, multi-process continuous and large-volume operations like panel cutting, slotting, and drilling.
Heavy-Duty Wood Routing and Shaping
Performing medium-depth, large-volume routing and roughing on solid wood, thick MDF, and artificial wood, laying the foundation for subsequent finishing.
High-Precision Component and Prototype Manufacturing
High-precision, multi-process automatic tool change milling and drilling of materials such as resin, engineering plastics, and light alloys.
Precision Processing of Light Metal Materials
Can be used for milling and drilling of soft metals like aluminum alloys and copper sheets; its high rigidity is very crucial in metal processing.
■ Adapted Equipment
● High-Performance Automatic Tool Change (ATC) CNC Machining Centers
Woodworking, furniture, or advertising industry machines equipped with tool magazines, requiring high-efficiency, multi-process automated production.
● Heavy-Duty CNC Nesting Centers
Used as the main cutting unit for continuous, high-intensity production in the panel furniture industry.
● General High-Rigidity CNC Milling Machines
Equipment used in laboratories or for precision part prototyping, requiring the spindle to have high rigidity, high precision, and automatic tool change functionality.
● Automated Integration Workstations
Used as the power unit on automated assembly lines for continuous, heavy-load, multi-functional processing of products.
■ FAQ
Q: How to choose the right power?A: It depends on the material you're processing.
2.2kW: Suitable for engraving materials like acrylic and PVC.
3kW - 4.5kW: Most common, used for nesting and engraving various wood panels.
6kW and above: Ideal for heavy cutting, like cutting solid wood.
Q: What should be noted when using an air-cooled spindle?A: Keep it clean, don't overload it, and check if the fan is spinning correctly.
Q: How to match an air-cooled spindle with an inverter?A: The inverter's power, voltage, and frequency must match the spindle's specifications.
Q: Is it normal for an air-cooled spindle to get hot during use?A: Slight warmth is normal. However, if it feels very hot to the touch, the fan may be broken or the spindle could be overloaded.
Q: What is the typical lifespan of an air-cooled spindle?A: The lifespan of an air-cooled spindle mainly depends on its bearings. With proper maintenance and without overloading, a good spindle can last for thousands or even tens of thousands of hours.
