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CNC spindles

Unlock Precision and Power with a High Torque 7.5kW ATC Spindle Motor

In modern CNC machining, the spindle motor plays a critical role in determining the performance, accuracy, and efficiency of a machine.

Whether you’re working with wood, plastic, or metal, choosing the right spindle is essential. For high-demand applications, the ATC spindle motor—especially the high torque 7.5kW ATC spindle—delivers a powerful combination of speed, force, and convenience.

Table of Contents

What is an ATC Spindle Motor?

An ATC (Automatic Tool Change) spindle motor is a type of spindle designed to automatically switch between tools during a machining cycle without manual intervention. This enhances production efficiency, improves precision, and reduces downtime. ATC spindles are often used in high-volume manufacturing, woodworking, and mold-making where multiple tools are required for complex tasks.

Advantages of a High Torque 7.5kW ATC Spindle

A high torque 7.5kW ATC spindle motor offers significant advantages for heavy-duty cutting and long-cycle machining tasks:

1. Increased Cutting Power

With 7.5kW of power output, this spindle can easily handle hard materials like aluminum, brass, and dense hardwoods. The high torque allows for deeper cuts and faster material removal.

2. Automatic Tool Changes

Reduce machine downtime and human error with automatic tool changes. This feature is especially beneficial for multi-step processes or automated production lines.

3. High-Speed and High-Torque Performance

Unlike standard spindle motors, a 7.5kW ATC spindle provides both high rotational speeds and consistent torque across a wide RPM range, ensuring clean, precise results even at lower speeds.

4. Heavy-Duty Durability

Built for industrial use, these spindles are designed to withstand continuous operation under harsh conditions, including high loads, extended runtime, and vibration.

5. Improved Surface Finish

Consistent torque and advanced bearing systems reduce vibration, ensuring a superior surface finish with minimal tool marks—ideal for furniture, molds, and aerospace parts.

Common Applications

  • CNC woodworking machines for carving, cutting, and drilling

  • Aluminum and non-ferrous metal processing

  • Mold and die making

  • Stone and marble engraving

  • Automotive and aerospace component milling

Choosing the Right Spindle Motor for Your Needs

When selecting a spindle motor, it’s crucial to consider not only the power and torque but also your material types, spindle speed requirements, and cooling system preference (air-cooled or water-cooled). The high torque 7.5kW ATC spindle is ideal for manufacturers who need a balance of power, precision, and productivity.

7.5kW ATC Spindle Motor Specification Sheet

Item Specification
Spindle Type ATC (Automatic Tool Changer) Spindle Motor
Power Output 7.5 kW
Rated Voltage 380V / 3 Phase (customizable)
Rated Current Approx. 15 A
Rated Frequency 200–400 Hz
Max Speed 24000 RPM (Optional: 12000 / 18000 RPM)
Torque (Rated / Peak) 6.3 Nm / 8.5 Nm
Cooling Method Water-cooled / Air-cooled (optional)
Tool Holder Type ISO30 / HSK F63 / BT30 (optional)
Tool Change Method Pneumatic Automatic Tool Change (ATC)
Collet Type ER32 / ER40
Bearings Type Ceramic Angular Contact Bearings (4 pcs)
Bearing Lubrication Grease / Oil Mist (optional)
Runout Accuracy ≤ 0.001 mm
Weight Approx. 30–35 kg
Mounting Type Flange or Square Mounting (customizable)
Protection Level IP54 / IP65 (optional)
Application CNC milling, engraving, carving, cutting
Suitable Materials Wood, plastic, aluminum, acrylic, copper
Warranty 12 months

Conclusion: Automate Smarter with a CNC ATC Spindle

For CNC operators and manufacturers looking to boost productivity and precision, upgrading to a high torque 7.5kW ATC spindle motor is a smart move. With the ability to handle heavy loads, deliver consistent performance, and switch tools automatically, this advanced ATC spindle motor is a cornerstone of high-efficiency machining systems.

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