​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​

​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.

SFG0406-01 Ultra-High-Speed Dental Milling Spindle
For Dental CAD/CAM Machines | 60,000 rpm | 40mm Diameter | 90V | Precision & Reliability

The SFG0406-01 is an ultra-compact, ultra-high-speed electric spindle engineered specifically for precision dental CAD/CAM machining centers. With its small 40mm diameter, lightweight design (1.5kg), and blistering 60,000 rpm maximum speed, it is the ideal solution for fine-detail milling, grinding, and polishing of dental materials like zirconia, PMMA, resin, and wax. Powered by a 90V single-winding asynchronous motor, it delivers reliable performance with low heat generation and minimal vibration, ensuring the exceptional surface finishes and dimensional accuracy required for crowns, bridges, veneers, and implants.

Technical Overview

This micro-spindle is purpose-built for the demanding environment of digital dental laboratories and chairside milling units. Its core design prioritizes high rotational accuracy, rapid response, and operational stability at extreme speeds. The combination of precision angular contact bearings, efficient air-cooling, and a compact form factor makes it a reliable and powerful drive unit for the next generation of dental restoration manufacturing.

Core Performance Advantages

• Ultra-High Speed for Superior Finish: Delivers a constant 60,000 rpm, enabling high-quality surface finishes on dental ceramics and composites, reducing the need for extensive manual polishing and shortening production cycles.
• Compact & Lightweight Design: With a mere 40mm diameter and 1.5kg weight, it integrates easily into multi-spindle dental machining units or compact desktop mills, minimizing inertia and allowing for rapid tool path movements.
• Precision Engineering for Accuracy: Equipped with high-precision angular contact bearings (71901 front, 71900 rear) and balanced to a high standard, ensuring minimal runout and vibration for fine-detail machining and extended tool life.
• Efficient Air Cooling System: Utilizes a clean, dry air cooling system (30 L/min), effectively managing operational heat without the risk of coolant contamination—a critical factor in the clean, dust-controlled environment of dental labs.
• Simple & Reliable Tool Clamping: Features a standard Φ4 straight-shank collet system, compatible with a wide range of miniature dental grinding and milling tools. The pneumatic tool change (0.5-0.7 MPa) ensures quick and secure tool swaps.
• Optimized for Dental Workflows: The 90V motor and 2-pole design provide quick acceleration to operating speed, supporting efficient batch processing of dental restorations with consistent results.

Detailed Technical Specifications

Primary Applications

This spindle is specifically designed for:

• Dental CAD/CAM milling machines for chairside or laboratory production.
• Precision milling of zirconia, PMMA, composite resin, wax, and CoCr blanks.
• Fabrication of dental crowns, bridges, inlays, onlays, veneers, and implant abutments.
• Fine-detail engraving and surface texturing on dental prosthetics.

Value Proposition

The SFG0406-01 delivers the essential combination of extreme speed, compact size, and reliable precision required for modern digital dentistry. It enables dental technicians and clinics to achieve excellent restoration quality with high efficiency, supporting faster turnaround times and superior patient outcomes. Its robust design ensures longevity in continuous production environments.

Equip Your Dental Milling System for Peak Performance and Precision. Contact us for technical details and integration support for the SFG0406-01 Ultra-High-Speed Dental Spindle.