The Jet 18" Large Spindle Bore Lathe provides excellent accuracy with less vibration to allow heavier cuts. The removable gap allows up to 27-1/2" diameter work. The lathe features a 3-1/9" bore spindle that is supported by 2 tapered and one ball bearing. The universal gearbox allows inch, metric, diametral, and module pitch threads without changing gears. The one-piece cast iron base allows heavier cuts by absorbing vibration. The machine also includes a convenient front removable chip tray for easy cleanup and an easy-to-use large foot brake. The chrome molybdenum headstock gears are hardened, ground and shaved for durabiity and long life. The five position automatic carriage stop provides excellent productivity. ADDITIONAL SPECIFICATIONS: Digital Readout: Acu-Rite 300S 2 Axis; Swing Over Bed: 18"; Swing Over Cross Slide: 11"; Swing Through Gap: 27-1/2"; Length of Gap: 12"; Distance Between Centers: 40"; Spindle Bore: 3-1/8"; Spindle Mount: D1-8; Spindle Taper (w/ Sleeve): MT-7 (MT-5); Number of Spindle Speeds: 12; Range of Spindle Speeds (RPM): 42 - 1,800; Number of Longitudinal and Cross Feed Rates: 122; Range of Longitudinal Feeds (IPR): .0015 - .0913; Range of Cross Feeds (IPR): .0006 - .0365; Number of Inch Threads: 61; Range of Inch Threads (TPI): 1-5/8" - 72"; Number of Metric Threads: 24; Range of Metric Threads: .05 - 20; Max Tool Size: 1" x 1"; Compound Slide Travel: 5-1/8"; Cross Side Travel: 9"; Carriage Travel: 36-9/16"; Tailstock Spindle Travel: 5"; Taper in Tailstock Spindle: MT-5; Steady Rest Capacity: 3/8" to 7-3/4"; Follow Rest Capacity: 1/2" - 3-1/2"; Width of Bed: 13-1/8"; Overal Dimensions: 96" x 44" x 66"; Motor: 7-1/2HP, 3Ph, 230/460V, Prewired 230V; Net Weight: 5,980 lbs. STANDARD EQUIPMENT INCLUDED: 16" face plate, 10" 3-jaw scroll chuck with top reversing jaws; 12" 4-jaw independent chuck; Four-Way tool post, Follow rest, Large capacity steady rest, Fully integrated coolant system, Full length splash guard and coolant return, Chuck guard, Articulating halogen work lamp, Centrally located controls with jog button, Threading dial, Mounting pads and levelers, Spindle Sleeve (MT-7 to MT-5); Live center, Tolerance test certificate, Tool box and adjusting tools. 300S ACU-RITE DIGITAL READOUT features 2, 3 or 4 axis 5.7" full color display, Multiple program names with numerous steps, Multiple display views, Job clock, Feed rate display, Multiple language support, Absolute/Incremental, Near-zero warning, Help function, 16 tool offsets/diameter, Preset and zero reset, 4 Function calculator/trig calculator, Instant inch/mm conversion, Position-trac home reference, Lock axis feature, Instant radius/diameter conversion, Taper calculator.