Komatsu/KM1973/PC400/PC450 Fabricated Front Idler Assembly/Idler Forging manufacture and Original factory

Product Specifications

DPW PARTS'Komatsu PC400 Fabricated Front Idler Assembly combines robust welded steel construction with precision machining and sealing technology. Designed for compatibility with Komatsu PC400 excavators, it ensures reliability, durability, and peak performance in the most demanding mining and construction environments.

Key Features & Technical Specifications

1. Compatibility

   • Designed exclusively for Komatsu PC400 series hydraulic excavators. Guaranteed OEM fit and performance.

2. Construction

   • Fabricated Steel Design: Welded from high-strength, abrasion-resistant steel plates (e.g., JIS SM490YB or equivalent) for enhanced durability and crack resistance.

   • Induction-Hardened Flanges: Surface hardness of 55-60 HRC to withstand abrasive wear from track chain contact.

   • Machined Bore & Shaft Interfaces: Precision-machined for seamless integration with the track frame and hydraulic tensioning system.

3. Bearing & Sealing System

   • Tapered Roller Bearings: Heavy-duty bearings capable of handling radial and axial loads under extreme shock and vibration.

   • Multi-Lip Labyrinth Seals: Komatsu’s proprietary sealing technology to exclude contaminants (e.g., mud, sand, rock debris) and retain lubrication.

   • Lube-for-Life Design: Pre-lubricated and sealed at the factory, eliminating routine maintenance.

4. Functionality

   • Track Guidance: Dual flanges prevent lateral derailment during operation on uneven surfaces.

   • Tensioning Pivot: Integrates with the hydraulic track tensioning system to adjust track sag.

   • Impact Resistance: Dissipates shock loads from obstacles and rough terrain.

5. Durability Enhancements

   • Stress-relieved welds to prevent fatigue cracking.

   • Corrosion-resistant primer and paint coating on non-wear surfaces.

Applications

• Mining: Loader and excavator mobility on rocky and abrasive terrain.

• Quarry Operations: Navigating uneven surfaces with heavy loads.

• Earthmoving and Construction: Excavation, grading, and trenching on challenging sites.

Benefits of OEM-Quality Replacement

• Extended Service Life: Fabricated construction and hardened flanges reduce wear rates.

• Reduced Downtime: Precision fit ensures easy installation and reliable performance.

• Contamination Resistance: Advanced seals protect bearings from harsh environments.

• Cost Efficiency: Promotes balanced undercarriage wear, protecting track chains and sprockets.

Maintenance Recommendations

• Regular Inspection: Check for flange wear, seal integrity, and rotational freedom during routine servicing.

• Track Tension Adjustment: Follow OEM guidelines to maintain optimal track sag and prevent idler overload.

• Debris Cleanliness: Remove packed material around the idler to reduce seal abrasion.

Komatsu PC400 Heavy duty undercarriage Components manufacture also supply other spare parts: