115-3696 Front Idler Assembly (580mm) for CAT 325 329 330 Series Excavators

Heavy-duty 115-3696 Front Idler for CAT 325, 329, and 330 excavators. Features a 580mm flange diameter and precision-forged shaft for maximum track tension control and durability in HD undercarriages.

Technical Specifications 115‑3696 ‑ Front Idler for CAT 325/329/330 Series

115‑3696 Front Idler — Heavy‑Duty Undercarriage Tension & Guide Assembly

The 115‑3696 Front Idler is a vital undercarriage component for large‑tonnage Caterpillar excavators. It guides track chains, maintains proper track tension, and bears partial machine weight. Designed for Heavy‑Duty (HD) undercarriage systems, this 580‑mm‑diameter idler adapts to heavy‑load excavation, mining and forestry working conditions.

1. Technical Specifications

Technical ParameterSpecification Details
Part Number115‑3696 (1153696)
Flange Outer Diameter580 mm (22.83 in)
Tread Diameter540 mm (21.26 in)
Rim Width / Shaft Diameter187 mm (7.378 in) / 75 mm (2.95 in)
Shaft Length340 mm (13.386 in)
MaterialHigh‑Strength Forged Alloy Steel with Induction‑Hardened Tread Surface
Undercarriage CompatibilityOptimized for CAT Heavy‑Duty (HD) Track Systems

2. Machine Compatibility

This heavy‑duty front idler fits a wide range of 25‑35‑ton Caterpillar construction and forestry machines:

  • Excavators: 322B/C, 325B/C/D, 329D/E/F, 330D2, 330F, 330 GC

  • Forestry Equipment: 322C FM, 325D FM, 511, TK711 Feller Bunchers

  • Large Special‑Purpose Units: 336D/E/F LN, 340 MHPU, 352 FMHPU

3. Key Features & Advantages

  • Deep Induction‑Hardened Surface: Precision heat‑treated tread and flange resist abrasion, pitting and deformation, extending service life in high‑abrasion mining and muddy sites.

  • Maintenance‑Free Sealing Structure: High‑quality dual‑cone seals and reinforced bushings prevent oil leakage, eliminating regular greasing maintenance requirements.

  • High‑Impact Forged Body: Premium alloy steel forging improves shock resistance, adapting to harsh forestry and rock‑working impact loads.

  • Precision Anti‑Derailment Design: Accurately machined center flange width limits track lateral displacement, reducing side wear and preventing track falling‑off.

Commercial Reference Information
Product: Front Track Idler Assembly
Condition: Aftermarket New Replacement
Cross Part Number: 1153696
MOQ: 1 Unit
Warranty Period: 12 Months / 2000 Working Hours

For bulk wholesale, technical consultation and undercarriage‑component sourcing solutions:

Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]

Hot Recommendations