PINION SHAFT AND PLANETARY GEAR DEVICE

PROBLEM TO BE SOLVED: To reduce polishing allowance and to reduce variation in the C and N contents on a surface. SOLUTION: A pinion shaft 4e is made of a steel containing 0.5-1.2 wt.% of C, and has a surface layer having an N content of 0.05-0.4 wt.%, a Vickers hardness of Hv 650 or higher obtained...

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Bibliographische Detailangaben
1. Verfasser:	YOSHIKAWA TOMONOBU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce polishing allowance and to reduce variation in the C and N contents on a surface. SOLUTION: A pinion shaft 4e is made of a steel containing 0.5-1.2 wt.% of C, and has a surface layer having an N content of 0.05-0.4 wt.%, a Vickers hardness of Hv 650 or higher obtained by induction hardening and a residual austenite amount of 15-40 vol.%. When the length of the shaft is represented by L (mm), the diameter of the shaft is represented by Da (mm), the diameter of an oil hole in the axial direction is represented by b (mm), and the length of the oil hole in the axial direction is represented by I(mm), the relation of I≥3L/5 is satisfied in the case of 20 mm≤Da-b, the relation of I≥(-Da+b+65 mm)L/75 is satisfied in the case of 5 mm≤Da-b