Bridgeport 1.5 HP Variable Speed Vertical Mill Specifications (Preliminary) Table Working Surface: 9" x 42" X-Axis Travel: 36" Y-Axis Travel: 14" Z-Axis Travel: 5" Knee Travel: 16" Collet Capacity: R8 Spindle Speed: 500-4200 RPM Main Motor Drive: 1.5 HP Load Capacity: 750 lbs Equipped With: Digital Readout Power Feeds