HITACHI EX100 front idler ASS’Y/excavator undercarriage parts made by Heli-CQC TRACK

The Hitachi EX100 front idler assembly is a crucial undercarriage component that helps support the weight of the excavator and guides the track chain. If you’re looking for information on replacement, parts, or troubleshooting, here’s what you need to know:

Key Components of the Front Idler Assembly:

1. Idler Wheel – The main wheel that guides the track.
2. Idler Bracket/Frame – Supports the idler wheel and attaches to the undercarriage.
3. Adjusting Mechanism – Allows track tension adjustment (grease or spring-based).
4. Seals & Bearings – Ensure smooth rotation and prevent dirt ingress.
5. Bolts & Fasteners – Secure the assembly to the undercarriage.

Common Issues & Symptoms:

• Excessive track slack (worn idler or tensioner failure)
• Uneven track wear (misaligned idler)
• Noisy operation (failed bearings or lack of lubrication)
• Oil leaks (damaged seals)

Replacement Parts & Compatibility:

• OEM Part Number: Check Hitachi’s official parts catalog (varies by EX100 model year).
• Aftermarket Options: Brands like Berco, ITR, or Komatsu may offer compatible idlers.
• Interchangeability: Some EX100 models share parts with similar excavators like Deere/Hitachi variants.

Where to Buy:

1. Hitachi Dealers – For genuine OEM parts.
2. Undercarriage Specialists – Companies like CQC TRACK .
3. Online Marketplaces – CQC Industrial, or CQC TRACK machinery parts suppliers.

Installation Tips:

• Always check track tension after replacement.
• Inspect sprockets and rollers for wear to avoid premature idler failure.
• Use proper lifting equipment—the idler assembly can be heavy.

Would you like help finding a specific part number or a trusted supplier? Let me know your EX100′s model year for accurate details!