Variable Speed 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.

ER11- 1/4″ ER11- 6mm
Part # Part #
66100 66101

650XVSJS Specifications
Speed RPM 25,000 – 40,000
Power Rating hp (Kw) 0.8 (0.60) – 1.4 (1.04)
Inlet Air Pressure

90 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 Level Less Than 78 dBA
Max Shank Capacity ER 11 – 1/4” (6mm)
Spindle Weight 75.2 oz (2.13 kg)

A 0.87” (22mm)
B 3.23” (82mm)
C 6.26” (159mm)
D 8.23” (209mm)

Accessories Models Part #
High Flow Filter / Regulator / Extractor with 1/2” NPT 30084
Tube 16mm O.D. – 10mm I.D. (order by foot) 16516
Hose & Fitting – 16mm O.D. – 10mm I.D. – 12’ 30047

Spindle, combo filter extractor (p/n #30084), collet, wrenches, hose and fittings, plug (for alternate air inlet not in use), and carrying case. 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.

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.

Brother LogoDMG Mori LogoHaas LogoHermle LogoFanuc LogoDoosan LogoGrob LogoHurco Logo
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.

Green Position – Single Turbine Mode

Red Position – Double Turbine Mode

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].