650X Switchable Speed CNC Spindle Series

Get nonstop power and precision with the double turbine 650XJS (3/4” / 20mm Straight Shank) – 25,000 to 40,000 rpm, < 1.40 hp (1.04 kW). The patented governor-controlled high power 650X maintains constant high speed for trochoidal milling in hard materials and cuts your cycle times dramatically.

Double front ceramic bearings, cooled by turbine air, make this spindle robust and reliable. Mill 24/7 with No Duty Cycle and No Thermal Expansion. Eliminates secondary finishing.

Selectable rear or side air feed on each spindle. Automatic Loading from the magazine on all machines. The hex key inserted through the rear of the spindle switches the position of an internal screw – controlling the flow of compressed air to supply one or both turbines operating at different speeds with single or double turbine power ratings.

650XVSJS Specifications
Speed RPM25,000 - 40,000
Power Rating hp (Kw)0.8 (0.60) - 1.4 (1.04)
Inlet Air Pressure90 PSI (6.2 Bar)
Air Consumption Idle cfm (l/s)11 (5.2) - 18 (8.49)
Air Consumption Working Flow (l/s)14 (6.60) - 40 (18.89)
Sound LevelLess Than 78 dBA
Max Shank CapacityER 11 - 1/4” (6mm)
Spindle Weight75.2 oz (2.13 kg)

How do I change the speed?

Our patent-pending system makes it very easy to change speed and power rating in a minute with our patented double turbine. A hex key fits through the air shaft at the back of the spindle. The flow control screw is turned up or down by the hex key to switch speeds, as displayed below in the red and green positions below.

Single Turbine Mode Shown

Diagram Displaying that you only need to turn a hex key at the back of the Spindle to switch between speed modes.
Click to Change Speeds
650XVSSingle Turbine ModeDouble Turbine Mode
Position in DiagramGreenRed
Power Rating0.8 hp (0.60 kW)1.4 hp (1.04 kW)
Speed25,000 RPM40,000 RPM

650XVSJS Dimensions

650XVSJS Dimensional Drawing
650XVSJS Dimensions
A0.87” (22mm)
B3.23” (82mm)
C6.26” (159mm)
D8.23” (209mm)
E1.62" (41mm)


Included Equipment

Combo filter extractor (p/n #30084)
Plug (for alternate air inlet not in use)
Carrying case

Standard Equipment

ER 11 collet system (1/4” or 6mm collet standard – other sizes optional). 3/4” or 20mm shank standard (Metric Shank comes with metric collet, Inch Shank with inch collet). Oil-free 90 psi / 6.2 bar, clean, dry air supply required.

Accessories ModelsPart #
High Flow Filter / Regulator / Extractor with 1/2” NPT30084
Tube 16mm O.D. - 10mm I.D. (order by foot)16516
Hose & Fitting - 16mm O.D. - 10mm I.D. - 12’30047

We retrofit any CNC machine to mill at a constant high speed 24/7 – so any CNC can be a high-speed machine. This includes, but isn’t limited to DMG MORI, Haas, Fanuc Robodrill, Doosan, Hermle, Hurco, GROB, Brother Okuma, Makino and Mazak. Easy installation using selectable air feed inlets – choose side inlet NPT / Stop Block or center through shank/tool holder air feed. HSK, CAT, BT, and DIN Toolholder options are available. Learn more about Air Turbine Spindles on your CNC Machine by visiting their page at the links below.

ER11- 1/4"ER11- 6mm
Part #Part #


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Service & Support

Support is always available from our technical team in the USA, Germany and Mexico. Repair Service is available in Florida and Munich.

Call our factory technicians at +1-561-994-0500 or email us at [email protected].