HSK-A100 / BBT50 High-Torque & High-Speed Dual-Winding Spindle (220V)
A2003828 | 305 N·m / 12,000 rpm | 280mm | Mitsubishi-Wound Motor | For HMCs & Gantry Mills
The A2003828 is a high-performance dual-winding electric spindle engineered for demanding applications on horizontal machining centers and gantry mills. Built with a robust 280mm housing and compatible with both HSK-A100 and BBT50 tool systems, it delivers exceptional versatility through its 220V, Mitsubishi-wound asynchronous motor. Operators can select high-torque mode (Y-connection: 305 N·m at 1500 rpm max) for heavy roughing, or switch to high-speed mode (Δ-connection: 12,000 rpm at 184 N·m) for productive milling and finishing. Designed for high rigidity, minimal thermal growth, and seamless integration with Mitsubishi drives via its native serial encoder, this spindle is a powerful upgrade for shops tackling large, challenging workpieces.
Technical Overview
This spindle is engineered to master both high-force and high-speed machining in one robust package. Its core strength lies in the specialized Mitsubishi-wound dual-coil design, which provides two distinct power curves optimized for different materials and operations. Combined with a large-diameter housing, premium bearing set, and efficient cooling, it ensures stable, precise performance under extreme loads, making it an ideal solution for heavy-duty manufacturing environments.
Core Performance Advantages
- Dual-Winding Strategic Flexibility: Switch between two optimized performance profiles directly from the CNC.
- Star (Y) Connection: Unleashes 305 N·m of immense torque at 18.5 kW, engineered for stable roughing, deep cuts, and machining of hardened steels, titanium, and heavy castings.
- Delta (Δ) Connection: Provides 12,000 rpm high speed and 26 kW of power, ideal for high-efficiency milling, semi-finishing, and operations requiring excellent surface finish.
- Mitsubishi-Wound Motor for Guaranteed Compatibility: The motor features coils wound to Mitsubishi specifications, ensuring optimal magnetic and thermal performance when paired with Mitsubishi CNC and drive systems (compatible with M800/M80/E80/C80 & MDS series). This guarantees reliable torque output, efficient heat dissipation, and simplified commissioning.
- High Rigidity & Stability: The substantial 280mm housing and a high-precision bearing arrangement (7018 × 4 front, N1012 × 1 rear) create an extremely stiff mechanical platform. This minimizes vibration and deflection under heavy cutting forces, ensuring part accuracy and protecting tool life.
- Optimized Thermal Management: A dedicated high-flow cooling system (>20 L/min, >3.5 kW cooling capacity) actively controls operational temperature, effectively minimizing thermal elongation to maintain precision and extend bearing lifespan during long production cycles.
- Dual Tool Interface & Secure Clamping: Offers flexibility by supporting both HSK-A100 and BBT50 tool holders. The reliable hydraulic tool change system (5-7 MPa) ensures maximum tool clamping force and security for large-diameter cutters.
Detailed Technical Specifications
| Category | Parameter | Specification / Value |
|---|---|---|
| General Information | Model | A2003828 |
| Housing Diameter | 280 mm | |
| Motor Type | Asynchronous (Mitsubishi-Wound) | |
| Motor Pole Number | 6 | |
| Power & Performance | Motor Configuration | Dual Winding (Y/Δ) |
| Rated Power (Y / Δ) | 18.5 kW (Y) / 26 kW (Δ) | |
| Rated Torque (Y / Δ) | 305 N·m (Y) / 184 N·m (Δ) | |
| Rated Speed (Y / Δ) | 550 rpm (Y) / 1350 rpm (Δ) | |
| Maximum Speed (Y / Δ) | 1500 rpm (Y) / 12000 rpm (Δ) | |
| Rated Voltage | 220 V | |
| Rated Current (Y / Δ) | 76 A (Y) / 85 A (Δ) | |
| Tool Interface | Tool Holder | HSK-A100 / BBT50 |
| Control & Feedback | Encoder | Mitsubishi Serial |
| Precision & Build | Bearing System | Front: 7018 × 4, Rear: N1012 × 1 |
| Lubrication | Grease | |
| Clamping & Cooling | Tool Change Method | Hydraulic (5-7 MPa) |
| Spindle Cooling | Liquid Coolant (>20 L/min, >3.5 kW) | |
| Center Through-Tool Coolant | Optional | |
| Physical Data | Net Weight | 300 kg |
Primary Applications
This high-performance spindle is ideally suited for:
- Heavy-duty milling and boring on horizontal machining centers (HMCs) and gantry mills.
- Roughing and finishing of large steel plates, weldments, and castings in the energy, mining, and transportation sectors.
- Manufacturing of large molds, dies, and industrial tooling.
- Any application requiring a powerful, versatile spindle capable of handling both high-torque and high-speed operations on a 220V power system.
Value Proposition
The A2003828 delivers uncompromising performance for heavy-part manufacturing. By combining the strategic flexibility of dual-winding operation with the assured quality of a Mitsubishi-wound motor and a rugged, thermally stable construction, it maximizes machine uptime, extends tool life, and ensures precision in the most demanding cuts. It is the definitive spindle upgrade for enhancing the capability and productivity of your horizontal or gantry machine.
Power Your Horizontal Machining Center for Maximum Performance. Contact us to configure the A2003828 High-Torque/High-Speed Spindle for your application.