7与同类产品主要参数比较表4.5T级小型挖掘机国内外同类机型性能规格对照表生产商中国三一日本KOMATSU日本KOMATSU日本HITACHI美国CASE日本久保田奥地利诺森日本石川岛意大利FIATK.机型WY50PC45MRXPC40MR-2ZAXIS50UCX45U-50-350Z-345NXE45SR整机质量kg4800482047904790478047504.90047654800功率/转速kW/rpm29.4/240029.1/245029.4/235030.5/220027.2/220029.4/225028.2/240030.2/230027.2/2200标准斗容（范围）m30.160.160.14（0.1-0.17）0.140.16-0.180.18（0.09-0.18）行走速度km/h4.6/2.84.3/2.74.6/2.84.4/2.54.6/2.94.4/2.54.6/2.74.9/3.04.5/2.5平台回转速度rpm0~9.80～90～90～90～9.58.68.78.50～9.5接地比压kg/cm20.300.300.280.260.270.270.27爬坡能力°303030303030整机牵引力kN4145.542铲斗挖掘力（ISO）kN3636.834.037.333.8536.533.837.0斗杆推力（ISO）kN24.524.520.523.323.328.020.0发动机生产商YAMMARKOMATSUKOMATSUISUZUYAMMARKUBOTAYAMMARISUZUYAMMAR发动机型号4TNV884D88E-3HB4D88E-5CC-4LE24TNE82AV2203KA4TNV88CC-4LE24TNE88A-YB发动机型式直喷，水冷直喷，水冷直喷，水冷直喷，水冷直喷，水冷直喷，水冷直喷，水冷直喷，水冷直喷，水冷活塞行程容积ltr2.1892.1892.1892.1792.1892.1972.1892.1792.189液压系统液压泵1变量泵+1定量泵2变量泵+1齿轮泵2变量泵+1齿轮泵1变量泵+1齿轮泵2变量泵+2齿轮泵1变量泵+1齿轮泵2变量+2齿2变量泵+1齿轮泵最大流量ltr/min110+1151×2+2851×2+32110+112×52.4110+2×57+532×52液压马达行走2变量马达2变量马达2变量马达2变量马达2变量马达2变量马达2变量马达2变量马达2变量马达回转1定量马达1定量马达1定量马达1定量马达1定量马达1定量马达1定量马达1定量马达1定量马达最大设定油压Mpa24.5262624.522.624.024.522.6油箱容量燃油箱ltr606065605050液压油箱ltr484855506348行走机构托轮数目（每边）111111支重轮数目（每边）554555工作范围(标准斗杆)最大挖掘高度mm532053205570515056505630532058505200最大卸载高度mm368036803860353040804000372041703680最大挖掘深度mm360036003500360036003560357036503600最大垂直挖掘深度mm287028702770285027002700最大挖掘范围mm587058705870580058605995590060005860地面最大挖掘范围mm575057505710567057205720推土铲尺寸（宽×高）mm1960×3551960×3551960×3552000×3851960×3451990×3601990×3801950×3701960×345提升最大高度mm430430430400360455390435360最大切土深度mm330330330365380375385420380整机尺寸整机全长mm532053205390533053005510525052905300整机全宽mm196019601960200019801960199019501960整机全高mm259025902625261026002600尾部回转半径mm1060/98010601060/9801000980990995980尾部突出履带外侧mm80/08080/00-101000轮间距mm194019402000196019701970轨距mm156015601560160015601560履带板宽度mm400400400400400400动臂回转角°左70/右50左70/右50左85/右50左60/右80左73/右58左65/右61左90/右50左73/右58偏移距离mm左600/右790左600/右790左630/右880左800/右800