1. Brief Introduction to Planetary Gear Transmission2. Material Selection for Planetary Gear TransmissionComponentMaterialSurface TreatmentHardness SpecificationsContact Fatigue LimitBending Fatigue LimitSun Gear (A)20CrMnMoCarburizing and QuenchingTooth surface: 56-60 HRC; Core: 30-42 HRC1500 N/mm²

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Gear transmission is one of the most prevalent methods in mechanical engineering, boasting high efficiency, stable transmission ratios, and strong load-carrying capacity. Among its variants, parallel shaft gear transmission is tailored for scenarios where two shafts are arranged in parallel, finding

This article mainly introduces the definitions and impacts of root undercut and steps in the manufacturing of transmission gears, discusses the step problems caused by incorrect design and manufacturing of the convex angle amount of roughing tools before and after heat treatment, and provides judgme