625X 90° Head CNC Spindle Series

Improve your cycle times dramatically and maintain continuous high-speed engagement in angles and pockets with the 625X90CAT40 spindle. The direct-drive governed 90º 625X90 mills with no duty cycle at constant high speed with ultra-low vibration – improving accuracy and rigidity. Rigid steel construction in one piece with the tool holder reduces the height of the unit. The entire motor is in the 90º head.

There are no gears or HF brushes to vibrate or burn up as in other 90º heads. Air Turbine Spindles® patented double turbines deliver extra power to 0.76 hp (0.57 kW) to maintain stable high speed and torque under load. Accelerate your feed rates. Select governed speeds at 30,000, 40,000, and 50,000 rpm. Ideal for mold making, milling, finishing with small cutter capacities, optimizing cutting tool life and performance. Automatic loading from your CNC Magazine for complete integration of constant high speed in your programs.

625X90 Specifications
Speed RPM30,00040,00050,000
Power Rating hp (Kw)0.72 (0.54)0.74 (0.55)0.76 (0.57)
Inlet Air Pressure90 PSI (6.2 Bar)
Air Consumption Idle cfm (l/s)19 (8.97)20 (9.44)20 (9.44)
Air Consumption Working Flow (l/s)22 (10.38) - 30 (14.16)
Sound LevelLess Than 78 dBA
Max Shank CapacityER 11 - 1/4” (6mm)
Spindle Weight126.4 oz (3.58 kg)

625X90CAT40 Dimensions

625X90CAT40 Dimensional Drawing
All fittings, couplings, and hoses must have a minimum of 8mm internal diameter.
A0.96” (24.4 mm)
B3.67” (93.1 mm)
CØ 2.25” (57.1mm)
D5.79” (147.1 mm)
E5.41” (137.3 mm)
F7.04” (178.9 mm)
GØ 0.63” (16 mm)
H5.42” (137.6mm)
I2.56” (65 mm)
J1.75” (44.5 mm)
K1.62" (41.1mm)
L4.54" (115.3mm)


Included Equipment

625XCAT90 Spindle
Combo Filter Extractor
ER 11 UP Collet System (1/4” or 6mm)
Collet Wrenches
Air Hose
Plug (For alternate air inlet not in use.)
Coolant Guard
Carrying Case

Standard Equipment

ER 11 UP Collet System (1/4” or 6mm collet). Oil free 90 psi / 6.2 bar, clean, dry air supply required.

Accessories ModelsPart #
High Flow Filter / Regulator / Extractor30008
Tube 12mm O.D. - 8mm I.D. (order by foot)16509
Hose & Fitting - 12mm O.D. - 8mm I.D. - 12’ 30045

Automatically Tool Change on your CNC

Block and Collar on the Automatic Tool Changer Assembly

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.

Toolchanger Mounting Assembly Collar and Block

Screw In Mounting Block

Toolchanger Mounting Assembly Two Piece Ring and Block

Two Piece Ring and Block

Toolchanger Mounting Assembly Drill Tap

Drill Tap

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.

TMA Assembly Includes

  1.  Mounting block or ring assembly
  2. Spindle manifold collar with adjustable height connector to block

Auto Tool Change your Air Turbine Spindle® with the Tool Changer Mounting Assembly

ER11- 1/4"ER11- 6mm
Speed RPMPart #Speed RPMPart #


625X90 High Speed 90 Degree Air Turbine Spindle®

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].