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汉江机床厂生产的M8240曲轴磨床,结构紧凑,操作方便,加工精度较高,适用于磨削各种汽车和小型拖拉机、柴油机的曲轴.但对目前我国拥有量较大的东方红-75拖拉机的4125柴油机来说,由于它的曲轴连杆轴颈偏心距为76毫米,而M8240曲轴磨床原设计主轴头架和尾架的偏心调整量最大为70毫米,致使这些连杆轴颈无法加工,必须用比较大的M8260曲轴磨床才行.
The M8240 crankshaft grinder manufactured by Hanjiang Machine Tool Plant has the features of compact structure, convenient operation and high machining accuracy, suitable for grinding crankshafts of all kinds of vehicles, small tractors and diesel engines. However, to the current large amount of Dongfanghong-75 tractor 4125 diesel engine, due to its crankshaft connecting rod journal eccentricity of 76 mm, while the original design of the M8240 crankshaft grinder headstock and tailstock eccentric adjustment of up to 70 mm, resulting in these connecting rod journals can not be processed, you must With the larger M8260 crankshaft grinder Caixing.