●The mechanical drive and hydraulic steering feature the lightness and flexibility. ●Yuchai YC6B120-T20 is adopted for engine, featuring in China II emission compliance, high power, high torque and low noise. ●The mechanical shift gearbox from Harbin FAW Gearbox Co., Ltd. is featured by convenient manipulation, stable gearshift and low impact, effectively prolonging the service life of gearbox. ●The special heavy drive axle for SDLG roller is adopted, with reliable performance and convenient maintenance. ●The reinforced front and rear frames are welded with high-quality steel plate, with reliable structure and applicability to fully-loaded operation. ●The hinge joint of cross axle and oscillating bearing feature the reliable performance. ●Since the opening angle of hood is quite large, it is easy to open. Yuchai YC6B120-T20 is adopted for engine, featuring in China Ⅱemission compliance, high power, high torque and low noise. The mechanical shift gearbox from Harbin FAW Gearbox Co., Ltd. is featured by convenient manipulation, stable gearshift and low impact, effectively prolongs the service life of gearbox. The special heavy drive axle for Lingong roller is adopted with reliable performance and convenient maintenance. The large travelling bearing adopts the ultra-long service life design. The caliper braking adopted features simple structure, convenient manipulation and reliable performance. The elegant appearance, superior visual field and driving and manipulating environment compliant with ergonomics minimize the labor intensity of operator. The optimized heat dissipation structure effectively reduces the engine coolant temperature and the oil temperature of hydraulic system and improves the cooling efficiency of the complete machine ItemParameter  Operating weight （Unloaded） 18000kg  Operating weight (Loaded) 21000kg  Front wheel weight distribution（Unloaded） 6300kg Front wheel weight distribution(Loaded) 7350kg Rear wheel weight distribution (Unloaded) 11700kg Rear wheel weight distribution(Loaded) 13650kg Engine Model YC6B120-T20  Engine Power 85kw  Engine speed 2000rpm Front wheel static linear load(Unloaded) 475N/cm Front wheel static linear load(Loaded) 555N/cm Rear wheel static linear load(Unloaded) 1083 N/cm Rear wheel static linear load(Loaded) 1263 N/cm Compaction Width 2260mm Travelling Speed (Forward Ⅰ) 2.81km/h Travelling Speed (Forward Ⅱ) 5.5 km/h Travelling Speed (Forward Ⅲ) 11.6 km/h Travelling Speed （Backward Ⅰ） 2.78 km/h Travelling Speed （Backward Ⅱ） 5.51 km/h Turning radius 6055mm  Minimum ground clearance 442mm  Theoretical grade ability 20% Overall dimension （Length×width×height） 6098×3070×2260mm