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 | STF35-68-0.75-ER16 |
| Power | 0.75kW |
| Voltage | 220/380V |
| Current | 3.0/1.75A |
| Poles | 2 |
| Torque | 0.4Nm |
| Speed | 18000rpm |
| Frequency | 300Hz |
| Cooling | Air |
| Tool interface | ER16 |
■ 0.75kW Air Cooled Spindle Motor Advantages
Extremely Low Cost and High Cost-Effectiveness
The low power results in very low purchase cost and running energy consumption, making it suitable for budget-sensitive applications or use by educational institutions and hobbyists.
High Rigidity from Square Structure
The square casing design allows for more stable mounting and superior rigidity compared to a round spindle of the same power, helping maintain stability at high speeds.
Air-Cooled Convenience, Low Maintenance Cost
It uses an integrated fan for heat dissipation, eliminating the need for external cooling systems (like pumps or hoses). Installation and maintenance are extremely simple, with no concerns about water leakage or winter freezing.
Ultra-High Speed and Fine Machining Capability
Typically achieves 24,000 RPM or higher, allowing for subtle, high-precision engraving and drilling operations with small-diameter tools.
Compact Size, Easy to Integrate
The compact square structure is easy to integrate into multi-axis, lightweight, or space-constrained CNC equipment.
■ Applicable Fields
● PCB Circuit Board Processing
Suitable for high-speed micro-drilling, milling of circuit boards, where precision and speed requirements are extremely high.
● Micro-Engraving and Fine Lettering
Used for extremely fine engraving and marking of stamps, nameplates, and small craft models.
● Non-Metallic Model Making
Used for producing small models from soft materials like precision resin, wax, and foam.
● Education and Maker (DIY)
Used in desktop-grade small CNC engraving machines by individuals, maker spaces, or educational institutions.
● Automated Light Integration
Used as an executing component on automated production lines for light trimming and drilling of plastics or thin sheets.
■ Adapted Equipment
● Desktop CNC Engraving Machines
Used for fine engraving and drilling; the machine's overall structure must be lightweight and compact.
● Small PCB Engraving/Milling Machines
High-speed, high-precision equipment specialized for electronic circuit board processing.
● Small Laser/Mechanical Hybrid Engraving Machines
Used for auxiliary mechanical processing in lightweight, multi-functional integrated equipment.
● Educational/Maker CNC Kits
Modular, low-cost CNC teaching or personal manufacturing platforms.
■ 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.
