AMERICAN TURNMASTER LS 3660 MANUAL LATHE

Technical Description

The American Turnmaster LS 3660 is a heavy-duty manual engine lathe engineered for demanding industrial applications, particularly in oil and gas machining. This precision machine features a 36.5-inch swing over bed with a 60-inch center distance, providing substantial workpiece capacity for large component production. The lathe incorporates a 4.13-inch D1-11 spindle bore with a maximum spindle speed of 1,000 RPM, delivering ample power through its 25 HP motor for sustained heavy cutting operations. The 27.5-inch swing over cross slide enables precise radial positioning for complex turning profiles. Built on a monolithic one-piece G-50 meehanite floor-type bed casting, the LS 3660 achieves exceptional rigidity and vibration dampening critical for maintaining tight tolerances during aggressive material removal. The machine includes 4-way power rapid traverse capability on both cross and longitudinal axes, significantly reducing non-cutting time on large workpieces. Standard equipment encompasses a 4.13-inch spindle bore, chuck guard with electric interlock, coolant pump and piping, full-foot brake, working light, and comprehensive operator's manual. The lathe operates across 12 spindle speed steps ranging from 15 to 1,000 RPM in low, medium, and high ranges, accommodating diverse material hardness and surface finish requirements. Final assembly and quality control occur in California, ensuring each machine ships production-ready for immediate shop floor integration.