The NSK SMS400 Spindle uses an advanced motor system allowing for long continuous operation and no heat generation. A compact, high torque motor makes this system perfect for grinding as well as drilling and milling with tools less than ø1 mm diameter. This NSK spindle can easily be installed in a milling machine and NC lathe using a standard milling chuck. Spindle and shank utilize a one-piece design resulting in an extremely high-precision system.Specifications• Speed: 40,000 rpm• Max. Output Power: 60W• Proper Air Pressure: 42-71PSI• Air Consumption: 4.94CFM• Spindle Accuracy: Within 1 µm• Hose: Intake Air - ø6.0 mm (O.D.), Exhaust Air - Canister Muffler• Shank: ø25.4 mm x 1.57" long• Weight: 28.57 oz.Included Equipment• Collet Chuck ø1/8" (CHA-3.175): 1 pc.• Chuck Nut (K-263)• Wrench (8 x 5), (10 x 10): 1 pc. each• Hose (K-215): ø6 mm x 6 ft.• Filter Joint (FJ-01)