Speeds from 400 to 5,000 RPM. Handwheel adjustment sets the speeds. Large 2-1/4" quill allows greater accuracy. 3" column diameter for maximum head support. Full bearing support on quill for maximum spindle stiffness. 6" stroke for deep hole applications. Accurate depth stop for precise hole depths. 1/2" Drill chuck & arbor. Safety collar. Type: 15" Floor Cast Iron Drilling Capacity (max./in.): 5/8 Steel Drilling Capacity (max/in.): 1/2 Column Diameter (in.): 3 Quill Diameter (in.): 2-1/4 Spindle Taper: 2MT Spindle Travel (in.): 6 Spindle Speeds (RPM): 400 to 5000 Overall Table Size (in.): 15-1/4 x 17-3/4 Table Working Surface (in.): 12-1/2 x 14-1/2 Number & Size of T-Slots (in.): 2&1/2 Spindle to Table (in.): 41 Spindle to Base (in.): 47-1/2 Overall Height (in.): 67-1/2 Motor A5816/A5836: 1 HP, 115/220V, 1Ph Motor A5818/A5838: 1HP, 220/440V, 3Ph Weight (lbs.): 436 Capacities for continuous production use will vary based on application.