Variable Speed Series
The patented double turbine 625XVSBT30 delivers constant high speeds under load – 30,000 to 50,000 rpm, < 0.76 hp (0.57 kW). Speed up your cycle times with this compact and powerful spindle. Ideal for contouring, mold making, milling, finishing, and drilling with small tools.
Governor control maintains constant high speed and power under load. Direct drive means no heat, no duty cycle, and super reliability. Selectable rear or side air feed.
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 #|
|Speed RPM||30,000 – 50,000|
|Power Rating hp (Kw)||0.40 (0.30) – 0.76 (0.57)|
|Inlet Air Pressure||90 PSI (6.2 Bar)|
|Air Consumption Idle cfm (l/s)||10.5 (4.9) – 20 (9.44)|
|Air Consumption Working Flow (l/s)||11 (5.2) – 30 (14.16)|
|Sound Level||Less Than 78 dBA|
|Max Shank Capacity||ER 11 – 1/4” (6mm)|
|Spindle Weight||96 oz (2.72 kg)|
|Accessories Models||Part #|
|High Flow Filter / Regulator / Extractor||30008|
|Tube 12mm O.D. – 8mm I.D. (order by foot)||16509|
|Hose & Fitting – 12mm O.D. – 8mm I.D. – 12’||30045|
Spindle, combo filter extractor (p/n #30008), 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). 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.
Automatically load Air Turbine Spindles® in CNC machines with our patented wrap-around Toolchanger Mounting Assembly (TMA). This option allows CNC tool-changers to automatically load/unload our family of high-speed precision spindles using a proprietary collar system and mounting block or ring around the CNC spindle integrated to the right side of the CNC spindle in minutes.
Mounting blocks or rings compatible with Haas, Hurco, Doosan, Robodrill, Hardinge, DMG, Brother, Okuma, and all other CNC’s are available. We are accustomed to developing custom solutions for any CNC. A Universal Block can be provided for drilling your CNC screw positions. Installation Kits are available. The TMA block remains on the CNC spindle for normal tool changes, even if not using the Air Turbine Spindles™ as it will not interfere when using the main spindle.
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