Kobelco SK350 Carrier Roller
Designed specifically for the Kobelco SK350 series excavators (including SK350-8, SK350LC-8, SK350LC-9), this carrier roller is also compatible with related models such as SK330-5/SK330-8, making it a versatile replacement part for multi-model fleets.
Apr 14,2026
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Kobelco SK350 Carrier Roller: Product Introduction
The Kobelco SK350 Carrier Roller (also known as Top Roller/Upper Roller) is a critical undercarriage component designed to support the upper track frame, maintain proper track tension, and ensure stable travel performance for the 35-ton class Kobelco SK350 excavator. Engineered for heavy-duty applications, it delivers exceptional durability and reliability in harsh construction and earthmoving environments.
Core Specifications
ParameterDetail
Part Number: 24100N7035F3 (Common OEM Reference)
Material:Roller Shell: 50Mn High-Strength Carbon Steel
Shaft: 45# Carbon Steel
Bushing: QT450-10 Ductile Iron
Heat Treatment: Hot Forging + Differential/Through Quenching + Tempering
Surface Hardness: HRC 50-56 (Hardness Depth: 4-8mm)
Sealing System: Double-Cone Lip Seal + Lifetime Lubrication
Warranty: 2,000 Working Hours (Typical Service Life: 4,000+ Hours)
Finish Precision-Machined + Anti-Corrosion Paint (Black/Yellow Optional)
Key Features & Benefits
Superior Load-Bearing Capacity
Constructed with 50Mn forged steel shell and precision-machined 45# shaft, the carrier roller withstands high impact loads and heavy operating weights, ensuring stable support for the excavator's upper structure.
Extended Wear Resistance
Advanced heat treatment processes (differential/through quenching) create a hardened surface layer, delivering excellent wear resistance and crack prevention even in abrasive conditions.
Reliable Sealing & Lubrication
Dual-cone lip seal design prevents dust, mud, and water intrusion, while lifetime lubrication maintenance-free operation reduces downtime and maintenance costs.
Precision Engineering
Strict adherence to OEM specifications ensures perfect fit and alignment with the SK350's track system, minimizing premature wear and optimizing travel efficiency.
Application Compatibility
Designed specifically for the Kobelco SK350 series excavators (including SK350-8, SK350LC-8, SK350LC-9), this carrier roller is also compatible with related models such as SK330-5/SK330-8, making it a versatile replacement part for multi-model fleets.
Quality Assurance
Each unit undergoes rigorous quality control, including:
100% dimensional inspection to ensure precise fit
Pressure and rotation testing to verify sealing integrity
Compliance with ISO 9001 quality management systems
Packaging & Shipping
Supplied in fumigation-free seaworthy packaging to meet international shipping standards, available for delivery via FOB, CIF, or CNF terms. Standard lead time: 7-10 days for in-stock orders.
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Designed specifically for the Kobelco SK350 series excavators (including SK350-8, SK350LC-8, SK350LC-9), this carrier roller is also compatible with related models such as SK330-5/SK330-8, making it a versatile replacement part for multi-model fleets.
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