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凯斯公司推出的Ｃ系列轮式装载机包括：６２１Ｃ、７２１Ｃ、８２１Ｃ和９２１Ｃ以及在此基础上开发研制的６２１ＣＸＲ和７２１ＣＸＲ型装载机，６２１ＣＸＲ和７２１ＣＸＲ型比其他型号增加了一套运载装置。该Ｃ系列装载机的主要特点是：采用了新的变速箱，驾驶室全部经过重
The C-series wheel loaders from Case include: 621C, 721C, 821C and 921C as well as the 621CXR and 721CXR loaders developed on this basis. The 621CXR and 721CXR models have an additional carrier set than the other models. The main features of the C-series loaders are: a new transmission, cab all heavy