POREBA TPK-90A1/4M MANUAL LATHES

Technical Description

The POREBA TPK-90A1/4M is a heavy-duty manual engine lathe designed for large-scale machining tasks. It features a **28" chuck size** with a **36.5" maximum swing over the bed** and an extended **157" distance between centers**, allowing it to accommodate long workpieces. The machine’s **spindle bore is 12.5"**, providing the capability to work with sizable stock or tooling. The lathe offers a broad **spindle speed range from 4 to 315 RPM**, enabling versatile machining operations from roughing to finishing. Feed rates include a **longitudinal feed range of 0.0043 to 0.0670 inches per revolution (IPR)** and a **cross feed range of 0.0021 to 0.033 IPR**, facilitating precise control over material removal. Its threading capability spans from **1/4 to 30 threads per inch (TPI)** and **1 to 120 millimeters per meter (MM/M)** for metric threads, supporting diverse threading requirements. For operational efficiency, the lathe includes a **power rapid traverse carriage with speeds up to 13 feet per minute (FPM)**. The machine is powered by a robust **22-horsepower motor**, ensuring consistent performance for heavy machining processes. The swing over cross slide measures 24.7", with a maximum swing in the gap of 47.2", accommodating larger diameter parts in the gap configuration. This lathe is ideal for engine turning and heavy industrial applications requiring both substantial size and precision.