The NSK Planet 400 is an energy saving mechanism operated by a compact compressor {Min. 0.4 kw-Max. 3.7 kw (1/2HP-5HP)} with small air consumption. This high-speed jig grinder provides excellent performance for a relatively low cost. System has the ability to turn a milling machine, etc. into a jig grinding machine by simply attaching a boring head. If mounted on a lathe, this grinder can be used as a precision internal grinder. Planet 400 can be used for the high-speed rotating portions of various kinds of specialized machine. Processable Range • Processable Diameter: ø0.24" - ø2.76" • Processable Depth: 2.36" • Max. Grindstone Diameter: ø0.79" Specifications • Speed: 35,000 - 45,000 rpm • Proper Air Pressure: 42-71PSI • Air Consumption: 10.60CFM • Weight: 6 lb. 9.82 oz. • Hose: Intake Air ø6.0 mm (O.D.) - 6 ft. • Shank: ø3/4" x 1.57" Included Equipment • Collet Chuck ø1/4" (CHK-6.35), ø1/8" (CHK-3.175): 1 pc. each • Chuck Nut (K-265): 1 pc. • Intake Air Hose (K-215): ø6 mm x 6 ft. • Anti-swivel Bar • Wrench (12 x 14): 2 pcs.