3054C and C4.4 Industrial Engine and Marine Auxiliary Engine Caterpillar


Crankshaft - Steel Crankshaft

Usage:

3054C 334



图 1g00295557

注: 曲轴修复后必须进行重淬火处理。 硝基渗碳处理曲轴修复后必须进行重淬火处理。 如果曲轴经过了至少 60 小时的氮化处理,则可以将曲轴磨去 0.25 mm (0.010 in),而无需进行重淬火处理。 感应淬火曲轴加工后无需进行重淬火处理。 加工前后必须检查曲轴上是否有裂纹。

注: 涡轮增压式发动机和涡轮增压后冷式发动机配置有硝基渗碳处理曲轴。 自然吸气发动机配置有感应淬火曲轴。

(1) 连杆轴承

有关连杆轴承的信息,请参阅技术参数模块, "连杆轴承轴颈"部分。

(2) 止推垫圈

标准厚度 ... 2.26 至 2.31 mm (0.089 至 0.091 in)
加大尺寸厚度 ... 2.45 至 2.50 mm (0.097 至 0.098 in)

(3) 主轴承

有关主轴承的信息,请参阅技术参数模块, "主轴承轴颈"部分。

(4) 曲轴齿轮

安装到曲轴上的齿轮的最大允许温度 ... 180 °C (356 °F)

注: 齿轮安装到曲轴上后,正时标记朝向曲轴外侧。

(5) 曲轴轴向间隙

曲轴的轴向间隙 ... 0.05 至 0.38 mm (0.002 至 0.015 in)
最大曲轴轴向间隙 ... 0.51 mm (0.020 in)

(6) 连杆轴颈

有关连杆轴承轴颈和连杆轴承的更多信息,请参阅技术参数模块, "连杆轴承轴颈"部分。

(7) 主轴承轴颈

有关主轴承轴颈和主轴承的信息,请参阅技术参数模块, "主轴承轴颈"部分。

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