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据有关资料报道:中、重负荷的齿轮传动减速机齿轮寿命我国平均为5～8年,国外先进国家为10～15年,少数国家有达22年的。重钢三厂φ550轧机主减速机(中心距为2600毫米)齿轮寿命已达25年,高速轴齿轮的总循环次数达635×10~7次。 1982年1月,对减速机齿轮面宏观检测以及传动轴超声波探伤,均未发现裂纹和其它隐患。齿面啮合状况良好,齿长方向接触85～90％,齿高方向达60～85％。齿面点蚀剥离轻微,高速轴齿轮齿形的固定弦齿厚比原设计理论固定弦齿厚最小极限尺寸仅小0.17毫米,实际仅磨损了0.20毫米。由此判定,这台渐开线圆柱人字齿轮减速机仍能继续使用下去。
According to relevant information reported: medium and heavy-duty gear reducer gear life in China an average of 5 to 8 years, advanced foreign countries for 10 to 15 years, a few countries have reached 22 years. Heavy steel mill φ550 mill reducer (center distance of 2600 mm) gear life has reached 25 years, the total number of high-speed shaft gear cycle times 635 × 10 ~ 7 times. January 1982, the macro gear reducer face detection and transmission shaft ultrasonic testing, did not find cracks and other hidden dangers. Tooth surface meshing in good condition, tooth length direction of contact 85 ~ 90%, tooth height up to 60 ~ 85%. Tooth surface pitting slight peeling, high speed shaft gear tooth shape fixed chord thickness than the original design theory fixed chord thickness minimum limit size of only 0.17 mm, the actual wear only 0.20 mm. Judging from this, this set of involute cylindrical herringbone gear reducer can continue to use it.