Parallel Shaft Gearbox adopts external meshing single-stage helical gear or herringbone gear, and the gears and shafts are all made of high-quality alloy steel forgings, with ultrasonic flaw detection; The tooth surface is processed by advanced processes such as carburizing, quenching or nitriding, precision grinding, thermoelastic deformation and modification, and the geometric accuracy reaches grade 5 or higher specified in the national standard. The hardness of tooth surface is above hrc56; The bearing is a dynamic sliding bearing with Babbitt alloy lining inside, which is accurately processed according to the design profile; The box body is of cast or welded structure, with good strength and stiffness, accurate boring, and accurate alignment of gears and bearings; All rotating elements are accurately calibrated by dynamic balance to ensure stable and reliable operation of the gearbox at high speed.