625LJS 50mm

625 Extended Barrel CNC Spindle Series


With vibration at just 0.4mm/sec the 625LJS (50mm) produces superb accuracy and fast results. The powerful 625LJS (50mm) is designed for close workpiece operations and machines with very short z-axis travel. Compact and powerful Air Turbine Spindles® 625 unit delivers patented constant governed high speed operation under load up to 0.50 hp / 0.37 kW at 30,000, 40,000 or 50,000 rpm. This results in cuts faster and cleaner – speeding up cycle times and achieving major savings. Fewer moving parts means less vibration and fewer repairs. There are no gears or vanes to lubricate or burn up and the ceramic grease-packed bearings are durable. Specify angular bearings for drilling. Totally oil-free operation eliminates workpiece contamination and oil lubrication using 90 PSI (6.2 Bar) dry clean oil-free air. The JS version is easy to mount with your selection of tool holder configuration and two selectable air inlet options (through shank or side air feed NPT) (patent pending). No Duty Cycle.

625LJS 50mm Specifications
Speed RPM30,00040,00050,000
Power Rating hp (Kw)0.40 (0.30) 0.45 (0.34)0.50 (0.37)
Inlet Air Pressure90 PSI (6.2 Bar)
Air Consumption Idle cfm (l/s)10.5 (4.9)11 (5.2)11 (5.2)
Air Consumption Working Flow (l/s)11 (5.2) - 20 (9.4)
Sound LevelLess Than 78 dBA
Max Shank CapacityER 11 - 1/4” (6mm)
Spindle Weight52 oz (1.47 kg)

625LJS 50mm Dimensions

625LJS 50mm Dimensional Drawing
A1.00” (25mm)
B1.00” (25mm)
C2.25” (57mm)
D2.16” (55mm)
E5.22” (133mm)
F7.22” (183mm)


Included Equipment

Combo Filter Extractor (p/n #30008)
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 / Extractor30008
Tube 10mm O.D. - 6.5mm I.D. (order by foot)16508
Hose & Fitting - 10mm O.D. - 6.5mm I.D. - 12’30043

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
Speed RPMPart #Speed RPMPart #


Aluminum Engraving at 5,000 mm/min - The CNC Spindle that DRASTICALLY Reduces Cycle Times

Aluminum Milling on DMG DMU 80 T by Air Turbine Spindles® 50,000 rpm, 0.37 kW 625L 50mm

Aluminum Milling on Hurco VCX600i by Air Turbine Spindles® 50,000 rpm, 0.37 kW 625L

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].