Komatsu PC40 track roller Excavator undercarriage parts

PC40 Track Roller Product Description

• Place of Origin: Fujian, China
• Condition: New
• Packing: Wooden case, Pallet
• Material: Alloy Steel or Steel
• Warranty: 1 Years
• Sample: Available
• Size: Standard
• Color: Customer’s Request
• Logo: Customer’s Request
• Technical: Forging and Casting
• OEM:Avaliable
• Packaging Details: in wooden case or fumigate pallet
• Port: Xiamen Port
• Supply Ability: 50000 Pieces / Month

PC40 Track Roller Products Details

• Wheel body: Made of 40Mn2 round steel with good hardenability through forging; heat treatment process of quenching and tempering + medium-frequency surface quenching ensures its strength and wear resistance.
• Shaft: Made of 45# round steel, with heat treatment process of quenching and tempering + medium-frequency surface quenching, surface hardness HRC52-60, hardened layer depth 3-6mm, with excellent comprehensive performance.
• Floating oil seal: Made of high-chromium and high-molybdenum alloy. Hardness HRC65-72, working surface roughness 0.1uM - 0.2uM.
• O-ring: Made of nitrile rubber raw material produced by copolymerization of butene and acrylonitrile, with better oil resistance and high-temperature resistance.

Key advantages

1. Superior Material & Wear Resistance
- Made of high-grade 50Mn/40Mn2 forged steel, ensuring high strength and impact resistance.
- Surface induction-hardened (HRC 48–55) with a 5–8mm deep hardened layer, delivering exceptional wear life in muddy, rocky, or abrasive conditions.
2. Heavy-Duty Load Capacity
- Features reinforced double-row tapered roller bearings to evenly distribute the machine’s weight and absorb heavy shock loads.
- Precision-machined 42CrMo alloy steel shaft provides high rigidity and bending resistance, preventing deformation under load.
3. Reliable Sealing System (Leak-Proof)
- Equipped with a multi-stage floating oil seal + dust cover assembly, effectively blocking mud, water, and debris from entering the bearing cavity.
- High-temperature-resistant rubber seals maintain lubrication, reducing friction and extending service life up to 3,000–5,000 hours.
4. Smooth Operation & Reduced Vibration
- Precision CNC manufacturing ensures tight tolerances for smooth rolling, minimizing track vibration, noise, and operator fatigue.
- Optimized wheel profile reduces track friction, improving fuel efficiency and extending the life of the entire undercarriage.
5. Perfect OEM Fit & Easy Maintenance

- 100% interchangeable with original Komatsu parts, ensuring direct, hassle-free installation.
- Designed for easy inspection and lubrication, simplifying daily maintenance and reducing downtime.

6. Cost-Effective & Long Service Life

- Robust construction minimizes premature wear and breakdowns, lowering replacement frequency and long-term operating costs.

- Backed by industry-leading warranty support for reliable performance and peace of mind.

PC40 Track Roller Applications

Track rollers are core components of excavator undercarriages, essential for the normal operation of excavators in various scenarios.

They are widely used in construction sites, mining areas, road construction, bridge engineering, and agricultural land reclamation.

Whether it is earthmoving, excavation, loading, or leveling, our track rollers provide reliable support for excavators, ensuring efficient and stable operation of the equipment.

They are also suitable for maintenance and replacement of old undercarriage parts, helping customers reduce equipment downtime.