supply of ball screw assemblyball screw assembly,ball screw assembly to rwf drawing no 715400210920 for station-2/cnc roughing machines use in z-axis movement of longitudinal carriage. special conditions: 1. warranty period: warranty of 18 months from the date of delivery or 12 months from date of fitment or use whichever is early. 2.material test certificate (mtc) from nabl accredited laboratories for chemical composition / physical properties should be submitted along with the material supply. 3.inspection certificate issued by manufacturers to be submitted along with supply. 4.only ball screw manufacturers to quote. p.o copies or credentials for supplying similar item to psus or govt. agencies to be submitted along with supply. [ warranty period: 30 months after the date of delivery ]