Komatsu PC290-300-350 Carrier Roller Assembly(VC4030E0) for heavy-duty excavator undercarriage parts-China carrier roller source factory.
Product Specifications
(VC4030E0)Komatsu PC300-8/290/350 Carrier Roller Assembly is a crucial undercarriage component for the Komatsu PC300-8 excavator, supporting the track chain and ensuring smooth movement over the rollers. Here’s a detailed breakdown:
Key Features & Specifications:
Compatibility: Designed for Komatsu PC300-8 (and similar models where applicable).
Function: Supports the track chain’s weight, reduces friction, and maintains track alignment.
Material: Typically made from high-strength alloy steel with hardened surfaces for durability.
Sealing: Equipped with labyrinth seals or grease-filled seals to prevent dirt ingress and retain lubrication.
Lubrication: Some models are grease-lubricated for extended service life.
Common Issues & Signs of Wear:
Excessive play or wobbling
Visible cracks or deformation
Oil/grease leakage (indicating seal failure)
Uneven track wear (due to misalignment)
Replacement Recommendations:
Replace in pairs (left & right) to ensure balanced performance.
Inspect bushings, sprockets, and idlers simultaneously, as wear in one component affects others.
Use OEM or high-quality aftermarket rollers for longevity.
Top Aftermarket Brands:
Komatsu OEM – Highest quality, exact fit.
Berco – Durable, trusted aftermarket option.
ITR – Cost-effective with good performance.
Vema Track – Reliable mid-range alternative.
Installation Tips:
Clean the undercarriage thoroughly before installation.
Torque bolts to manufacturer specs.
Check track tension after installation.
If you need help sourcing a PC300-8 carrier roller assembly, confirm whether you need grease-type or sealed-type, and check compatibility with your machine’s serial number. Let me know if you'd like recommendations for suppliers!
