Wheeler Machinery Sales, Inc. Financing Available / Se Habla Español. Have two warehouses full of used equipment and tooling, and always getting new inventory. Webb 17GX40 Engine Lathe 17/25″ x 40″ #6878 #2. Swing Over Bed: 17. Swing In Gap: 25 9/16. Distance Between Centers: 40. Swing Over Cross Slide: 9-3/4. Spindle Speeds: (12) 32-1800 RPM. Inch Threads: 4 – 80 TPI. Metric Threads: 0.5 – 7 MM. Main Motor: 5 HP.