Air Turbine Technology Inc., the leading manufacturer of revolutionary high-speed turbine products, highlights its 650 Series Spindles, engineered to deliver constant high speeds under load, ranging from 25,000 to 40,000 RPM with power up to 0.88 HP (0.66 kW). Designed for versatility and reliability, the 650 Series is suited for a broad spectrum of applications, from micro-milling to heavy-duty operations using larger tools. These spindles excel in all materials, including tool steel, titanium and ceramics, making them an optimal choice for industries demanding robust performance and precision.

The powerful 650 Series is rigid in cut with power rated at 0.8HP. This spindle is called the “Workhorse” for its robust construction, and it can mill while maintaining high speed with tools up to ¼”/ 6 mm capacity. For those requiring even greater power, the 650X Series within the 650 family features a patented double turbine design, delivering up to 1.4 HP (1.04 kW) and maintaining constant high speed and torque for demanding operations such as trochoidal milling in hard materials.

The 650’s unique patented governor developed by Air Turbine Tools® increases air flow to match the cutting load, maintaining rated speed on your tool path. This is a major difference from nominal high-speed technologies that drop speed as soon as your tool engages. The 650’s governor-controlled turbine maintains a high speed rating of up to 40,000 RPM throughout the cut, optimizing both tool performance and lifespan. Now, power is not sacrificed for speed.

Adding the 650 Series to the magazine enables machinists to dramatically increase cutting rates and reduce cycle times, significantly increasing productivity and optimizing small tool performance. Since CNC spindles quickly wear out when operated at their maximum speed, machinists can save substantial amounts on spindle repairs and avoid costly machine downtime by keeping Air Turbine Tools in their magazines for detail work.

There is another significant difference between the 650 Series and tools with gears, high frequency brushes or vanes: the latter often overheat or burn out, resulting in downtime and costly repairs. In contrast, the 650 Series operates at 40,000 RPM with just two moving parts, generating no heat and eliminating thermal growth, a key cause of inaccurate milling. As a result, consistent 24/7 operation without duty cycle limitations is now possible.

The 650’s grease-packed ceramic bearings are cooled by turbine air, ensuring exceptional reliability. This spindle certifies a 2 micron TIR and uses ultra-precision ER11 collet systems as standard, ensuring great accuracy. This turbine’s design results in ultra-low vibration of less than 0.4 mm/s², which enhances accuracy, and its quiet operation at under 78dBA is appreciated.

The 650 Series adds high speed to any CNC machine and is available with all popular shank configurations, including JS, HSK, CAT, BT and DIN, and options for fully automated loading on any CNC.

With the 650 Series, Air Turbine Tools® delivers a solution for higher productivity, providing non-stop power, precision and reliability for continuous production. The 650 Series stands out as a proven innovative high-speed spindle, enabling manufacturers to achieve superior surface finishes, 6 – 10 x reduced cycle times and increased productivity across a wide range of machining applications.

About Air Turbine Technology Inc.

Air Turbine Technology Inc. since 1988 has invented, patented and proven a range of revolutionary high-speed spindles, live tools, motor mounts and hand tools. Air Turbine Tools, Motors and Spindles® are high-speed pneumatic tools used by manufacturers for cutting, grinding, engraving, drilling or finishing materials in industrial processes, delivering superior performance in applications that demand high-speed, precision and reliability at 25,000 to 90,000 RPM with power to 1.4HP. This new generation of products increase airflow volume to the turbine to match cutting load, ensuring consistent high-speed without sacrificing power.

Air Turbine Spindles and Motors® operate reliably without generating heat to affect precision at 2 micron and have no duty cycle limitations. Equally revolutionary for hand tools user safety and comfort are light powerful Air Turbine Tools® operating under 67 DBA with the lowest vibration of any tools, eliminating stress and reducing injury risk.