LG240 Excavator Swing Motor Gearbox Iron Planetary Gear Reduction Box

Excavator Swing Reduction Gearbox LG240 Hydraulic Final Parts Excavator Swing Motor Gearbox

Main Structural Composition Layout

Common Operational Defect Malfunction Phenomena & Root Cause Analysis Results

• Abnormal noise generation production / Jerking intermittent movement performance function: Gear wear abrasion and surface pitting corrosion damage defects, bearing functional breakdown failure damage issues, insufficient inadequate or contaminated polluted lubricating fluid medium, inappropriate improper gear meshing backlash numerical value parameter.
• Oil seepage permeation and leakage occurrence problem troubles: Worn degraded oil sealing ring component parts, housing structural crack fissure damage defects, overfilled excessive lubricant liquid level height parameter, clogged blocked breather ventilation air‑hole opening port outlet.
• Sluggish slow‑moving or power‑deficient insufficient‑power slewing performance function: Worn degraded gear and bearing assembly component parts, incomplete brake release functional action mechanism, hydraulic motor internal bypass leakage flow path system, mismatched non‑compatible speed‑reduction transmission gear ratio parameter.
• Excessive thermal overheating rise condition phenomena: Deficient low oil level volume quantity or degraded lubricant physical‑chemical property characteristics, overload heavy‑load operating working condition modes, persistent continuous brake drag resistance friction force energy, inadequate insufficient heat emission dissipation efficiency performance.
• Gear slipping skipping / Tooth breakage failure damage accident incidents: Sudden impact load pressure force energy, foreign debris particle entry intrusion into internal mechanism component parts, fatigue‑induced degradation wear damage issues, shaft misalignment deviation errors during assembly installation procedure processes.

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