AIR TURBINE TECHNOLOGY INC.’s 650 Series spindles are 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 range of applications, from micro-milling to heavy-duty operations using larger tools. The spindles perform well in all materials, including tool steel, titanium and ceramics, making them an top choice for operations that require robust performance and precision.
The 650 Series is rigid in cut with power rated at 0.8HP. This spindle is called a “workhorse” for its robust construction, and it can mill while maintaining high speed with tools up to ¼”/ 6 mm capacity.
When even greater power is required, the 650X Series features a patented “double turbine” design that will deliver up to 1.4 HP (1.04 kW) and maintain 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 the tool path. This is different from nominal high-speed technologies that drop speed once the 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, without any sacrifice of power 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.
Another significant difference from tools with gears is the 650 Series’ high-frequency brushes or vanes: 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 78 dBA 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.
Learn more at www.airturbinetools.com