Model number: TDS-220 Power of tractor:120HP Brand of tractor:YTO group Max drilling diameter:250mm Max drilling depth:220m Working Air Pressure:2.5Mpa Diameter of Drill Pipe:Φ89mmΦ102mm Length of Drill Pipe:3.0 m Walking speed:40km/h Max.Lifting Force:16T Slewing Speed:40-80rpm Rotary Torque:7500N.m Size:6500*2150*2700mm