Heavy-Duty Excavator Gears | Final Drive & Swing Drive Components

Keep Your Fleet Running with OEM-Quality Replacement Gears

When a final drive or swing motor on a mining excavator fails, every hour of downtime costs you money. The planetary gear sets inside these drives operate under immense torque and constant shock loads, and gear failure is a common problem. Sourcing affordable, high-quality replacement gears quickly is essential to getting your machine back to work.

Yile Machinery manufactures high-strength replacement gears for excavator final drives and swing drives. We produce dimensionally exact sun gears, planet gears, and ring gears that meet or exceed OEM specifications for strength and durability, providing a reliable and cost-effective solution for equipment repair and maintenance.

Key Features & Benefits:

• High-Strength Forged Steel: We use robust alloy steels like 20CrMnTi and 42CrMo, specifically chosen for their ability to withstand extreme impact and torque. Our gears are often made from forgings for superior fatigue resistance compared to standard bar stock.

• Precision CNC Machining: Every gear is machined to precise tolerances for a perfect fit within your existing planetary carrier. This ensures smooth meshing, quiet operation, and prevents premature wear on other drivetrain components.

• Optimized Heat Treatment: To guarantee long service life, our gears undergo a critical carburizing and quenching process. This creates a hard, wear-resistant surface (HRC 58-62) to handle contact stress, while the gear's core remains tough and ductile to absorb shock loads without fracturing.

• Comprehensive Reverse Engineering: Have a failed gear from an older or uncommon machine? We can reverse-engineer the part from a sample to produce a brand-new, identical replacement, getting you out of a difficult situation.

Your Source for Excavator Planetary Gear Sets

We supply the critical internal components for travel motors and swing reducers, helping you rebuild units at a fraction of the cost of a new assembly.

We Manufacture:

• Final Drive Sun Gears

• Final Drive Planet Gears

• Final Drive Ring Gears

• Swing Drive Planetary Gear Sets

Compatible with Major Brands:

We can produce replacement gears for excavators from manufacturers like Caterpillar, Komatsu, Hitachi, Volvo, Hyundai, Kobelco, Doosan, and more.

Don't let a broken gear sideline your most valuable equipment. Trust Yile Machinery for durable replacement parts that restore performance and reliability.