For serious machining power, look no further than our 3.2KW Water Cooled Spindle. This 3.2kw water cooled cnc spindle is engineered for heavy-duty applications, providing consistent torque and speed for cutting non-ferrous metals and dense hardwoods. Its robust water-cooling system is essential for dissipating the heat generated during high-load operations.
■ Product Description

■ Technical Parameters
| Model | STZ100-3.2-ER20 |
| Power | 3.2kW |
| Voltage | 220/380V |
| Current | 10.0/6.0A |
| Poles | 2 |
| Torque | 1.27Nm |
| Speed | 24000rpm |
| Frequency | 400Hz |
| Cooling | Water |
| Tool interface | ER20 |
■ Product Advantages

Superior Cooling Performance
Water has a higher specific heat capacity than air, allowing it to more efficiently absorb and dissipate heat generated by the spindle during high-speed operation. This enables the spindle to run stably for long periods under high loads, preventing performance degradation or downtime due to overheating.

Guaranteed High Precision
Efficient heat dissipation effectively suppresses thermal deformation of the spindle. During long, continuous processing, the spindle's temperature rise is well-controlled, which ensures machining accuracy and stability, making it especially suitable for high-precision fine engraving.

Low-Noise Operation
Without a fan, the water-cooled spindle runs much quieter than an air-cooled spindle of the same power. This provides a quieter, more comfortable work environment for operators and reduces noise pollution.

Compact Size, Wide Application
While providing sufficient cutting power at 3.2kW, the spindle remains relatively compact. This makes it ideal for installation on small to medium-sized CNC engraving machines, advertising machines, or small machining centers where space is limited.
■ Application Scenarios

Advertising and Craft Production
This is one of the most typical applications for the 3.2kW water-cooled spindle. It can easily handle the fine cutting and engraving of non-metallic materials like acrylic, PVC, and two-color boards. Its high precision and low-noise characteristics ensure smooth edges and clear details on signs, lettering, and crafts, while also providing a more comfortable environment for indoor operation.

Woodworking and Furniture Making
It's suitable for the fine engraving, hollowing, and slotting of various wood materials (such as solid wood and MDF). For the production of small furniture, wooden crafts, or musical instruments, the spindle's high stability ensures smooth cutting and improves product quality.

Small-Scale Mold Manufacturing
When creating small non-metallic molds (such as resin or plaster molds), the spindle's high precision and thermal stability are crucial. The efficient water-cooling system ensures the spindle runs for extended periods without thermal deformation, which guarantees the mold's accuracy.
■ Adapted Equipment
● Small-Scale CNC Engraving Machines
This spindle is suitable for engraving machines with smaller work tables that need to process a variety of materials while maintaining high-quality cutting.
● Advertising Engraving Machines
In the advertising industry, this spindle is an ideal choice for engraving various advertising materials, as it meets both precision and efficiency requirements.
■ FAQ
Q: Why choose a water-cooled spindle?A: They have good heat dissipation, low noise, and high machining accuracy.
Q: What should be paid attention to in the daily maintenance of a water-cooled spindle?A: Use clean water (purified water), change the water regularly, and remember to use antifreeze in winter.
Q: How to choose the right power for a water-cooled spindle?A: 3.2kW and below: Suitable for engraving wood, plastic, and other materials.
5.5kW and above: Suitable for processing hard materials like metal and stone.
Q: Why does the spindle get hot?A: If the water isn't circulating (for example, if the pump is broken or the pipe is blocked), the spindle will overheat.
Q: What type of water is best for cooling?A: It's best to use purified or distilled water.
Q: How big should the water tank be for the cooling system?A: The bigger the water tank, the better the heat dissipation. A 10-20 liter tank is generally sufficient for a small spindle.