... box, lubricating system, supportor and so on. 3. Stable characteristic parameter and speed increasing system, good lubrication and sealing system, low NPSHr. ... composed of motor, gearbox, pump unit, lubrication system and baseplate. GSB-W series pumps feastures simple structures, ... composed of motor, gearbox, pump unit, lubrication system and baseplate. GSB-W series pumps feastures simple structures, ...