CNC Milling Spindle
260XDJ15G45
High-power synchronous motor spindle with HSK A100 interface. 45 kW output, 286 Nm torque, and sub-micron runout accuracy for heavy-duty milling operations in large machining centers.
260XDJ15G45 CNC Milling Spindle
The 260XDJ15G45 is a high-performance synchronous motor spindle designed for large CNC machining centers and heavy-duty milling applications. With a robust 260mm housing diameter, 45 kW of continuous power, and 286 Nm of torque at 15,000 r/min, this spindle delivers exceptional metal removal rates in steel, cast iron, and titanium alloys.
The direct-drive motor-spindle architecture eliminates transmission losses, providing superior dynamic response and constant speed under fluctuating cutting loads. Equipped with P4/P2 precision angular contact ball bearings in a tandem-O-tandem arrangement, the spindle maintains runout accuracy within 1 micron. The spiral water-cooling jacket ensures stable thermal conditions during prolonged heavy cutting cycles, minimizing thermal growth and maximizing dimensional accuracy. The HSK A100 tool interface provides excellent rigidity at the spindle nose for large-diameter tools, face mills, and high-feed cutters. This spindle is ideal for aerospace structural components, large die and mold manufacturing, and heavy equipment parts production.
Download Drawing Get a QuoteDetailed Parameters
| Speed (r/min) | 15000 |
| Power (kW) | 45 |
| Torque (Nm) | 286 |
| Voltage (V) | 380 |
| Current (A) | 95 |
| Motor Type | Synchronous Permanent Magnet Motor |
| Tool Interface | HSK A100 (DIN 69893) |
| Bearing Type | P4/P2 Precision Angular Contact Ball Bearings |
| Bearing Arrangement | Tandem-O-Tandem (TBT) |
| Bearing Lubrication | Grease (standard) / Oil-air (optional) |
| Runout Accuracy | ≤ 0.001mm at spindle nose |
| Cooling Method | Water-jacket cooling with external chiller (min 8 L/min flow) |
| Housing Diameter | 260mm |
| Housing Length | ~880mm |
| Spindle Weight | ~380 kg |
| Tool Clamping | Hydraulic drawbar with disc spring preload |
| Drawbar Force | 32 kN |
| Sensor Integration | 2x PT100 temperature sensors + 1x vibration sensor port |
| Protection Class | IP54 (IP65 optional) |
| Noise Level | ≤ 74 dB(A) at max speed |
| Balancing Grade | G0.4 per ISO 1940-1 |
| Mounting Orientation | Vertical / Horizontal |
Available Options & Customizations
- Hybrid ceramic bearings (Si₃N₄ balls) for extended high-speed operation
- Oil-air micro-lubrication for continuous duty cycles
- Built-in drawbar position sensor with analog output
- Custom tool interface (HSK A63, HSK A125, BT50, Capto C8)
- Rotary encoder for rigid tapping and spindle orientation (C-axis)
- Increased IP65 protection rating for wet machining environments
Built for Heavy-Duty Milling
The 260XDJ15G45 combines synchronous motor technology with robust construction for maximum metal removal rates in demanding production environments.
Synchronous Motor Technology
Permanent magnet synchronous motor maintains constant speed under varying loads for consistent surface finish.
P4/P2 Precision Bearings
High-precision angular contact bearings in TBT arrangement for maximum rigidity and extended service life.
HSK A100 Tool Interface
Large HSK A100 interface ensures rigid clamping for heavy cutting tools and face mills up to 250mm diameter.
Integrated Motor-Spindle Design
Rotor mounted directly on spindle shaft eliminates belts and gears for zero transmission loss.
Optimized Water Cooling
Spiral water jacket with high-flow channels maintains stable temperature under 40 kW+ continuous loads.
Precision-Balanced Rotor
Dynamically balanced to G0.4 grade for low vibration across the full 15,000 rpm speed range.
Hydraulic Drawbar System
High-force hydraulic clamping with spring preload for secure tool retention during aggressive cutting.
Condition Monitoring Ready
Built-in temperature and vibration sensors enable predictive maintenance and real-time health monitoring.
Request a Quote for 260XDJ15G45
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Applications: Large CNC machining centers · Heavy-duty face milling and shoulder milling · Aerospace structural component machining (titanium, aluminum) · Large die and mold manufacturing · Heavy equipment and mining machinery components · High-feed roughing in steel and cast iron