High-Srecision 45 Series Electric Spindle
Engineered for High-Performance Dental Milling & Precision Micro-Machining
Product Overview
The 45 Series Electric Spindle is a core power component engineered for high-speed, high-precision machining applications, with a specific design focus for dental milling machines. It integrates a 90V single-winding asynchronous motor with a high-precision angular contact bearing system. Within its compact cylindrical form, it delivers an exceptional speed of 60,000 RPM, 0.5kW of power, and outstanding rigidity, making it the ideal solution for the efficient and precise machining of materials like zirconia, resin, and metals.
Key Features & Advantages
- Superior Performance: 90V single-winding design achieves both high speed (60,000 rpm) and substantial power (0.5 kW) output, ensuring high processing efficiency.
- Exceptional Stability & Rigidity: Utilizes a high-stiffness bearing configuration (Front: 71902×2, Rear: 71902×1) to effectively dampen vibration, guaranteeing machining accuracy and superior surface finish.
- High-Efficiency Heat Dissipation: The optimized structure combined with an integrated air-cooling system enables low-heat operation, ensuring thermal stability during prolonged operation and extending service life.
- Compact & Lightweight Design: Features a streamlined cylindrical design (Key interface locations are clearly marked) with a weight of only 2 kg, making it exceptionally easy to integrate into space-constrained equipment like dental mills and compact machining centers.
- Ready for Integration: Supports standard straight-shank collets (Φ3.175/Φ4/Φ6) and pneumatic tool changes, simplifying installation and maintenance.
Detailed Technical Specifications
| Category | Parameter | Specification |
|---|---|---|
| Performance | Maximum Speed | 60,000 rpm |
| Rated Speed | 60,000 rpm | |
| Rated Power | 0.5 kW | |
| Rated Torque | 0.08 Nm | |
| Rated Voltage | 90 V DC | |
| Rated Current | 4.3 A | |
| Mechanical Construction | Motor Type | Asynchronous Motor (2-pole) |
| Bearing Specification | Front: 71902×2, Rear: 71902×1 | |
| Lubrication | Grease | |
| Collet Type | Φ3.175 / Φ4 / Φ6 Straight Shank | |
| Tool Change | Pneumatic (0.5-0.7 MPa) | |
| Operating Conditions | Cooling Requirement | Air-cooled, 30 L/min (Pressure ≥ 0.1 MPa) |
| Intermittent Duty | Supports 40% ED intermittent operation | |
| Physical Properties | Weight | Approx. 2 kg |
Primary Applications
- Dental Restoration Manufacturing: Precision milling of zirconia crowns/bridges, resin temporaries, and surgical guides for implants.
- High-Precision Engraving: Mold texturing, jewelry, and fine engraving of high-gloss surfaces.
- Micro-Drilling: PCB micro-vias and precision small-hole drilling.
- Small Component Machining: Processing of electronic components, medical device parts, and other small, precision workpieces.