A:Abnormal noise (grinding/clicking) from travel motor, slow/weak excavator movement, hydraulic pressure fluctuation, oil leakage at shaft seal, and accelerated wear of planetary gears.
A:Ensure clean mounting surfaces, apply specified torque to fasteners, use new oil seals, align gear teeth precisely, and lubricate with recommended hydraulic oil before startup.
A:Verify part number YN53D00008S009 matches your Kobelco ED/SK series model; check travel motor serial number and gearbox specifications for 100% fit.
A:High-strength alloy & heat treatment resist abrasion, corrosion and high impact; works reliably in -20℃ to +120℃, dusty/wet conditions, extending service life by 30% vs standard shafts.
A:100% dimensional inspection, gear tooth profile testing, hardness verification, and pressure testing; each batch has quality certificates to ensure consistency for B-end procurement.
Q: What quality options are available?
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companie





















