Idler CAT 315 317 320 320D

CAT 315 317 320 320D Idler for Precise Track Tension and Stability

Keep your excavator running straight and steady with heavy-duty front idlers designed to guide the rubber track, absorb shock, and maintain optimal tension. Engineered for Australian construction, landscaping, and civil applications, these idlers help reduce undercarriage wear while ensuring smooth, reliable tracking across all ground conditions.

Compatible Models:

Caterpillar 315Caterpillar 315 GcCaterpillar 315BCaterpillar 315B LCaterpillar 315CCaterpillar 315C LCaterpillar 315D LCaterpillar 315GcCaterpillar 316E LCaterpillar 317Caterpillar 317BCaterpillar 317B LCaterpillar 318BCaterpillar 318BnCaterpillar 318CCaterpillar 318C LCaterpillar 319DCaterpillar 320Caterpillar 320 LCaterpillar 320BCaterpillar 320B LCaterpillar 320B LlCaterpillar 320BnCaterpillar 320BuCaterpillar 320CCaterpillar 320C LCaterpillar 320DCaterpillar 320D LCaterpillar 320D LrrCaterpillar 320D RrCaterpillar 320ECaterpillar 320E LCaterpillar 321BCaterpillar 321CCaterpillar 321DCaterpillar 321D LcrCaterpillar 323DCaterpillar 323D LCaterpillar 323D LnCaterpillar 323F LCaterpillar 325F Lcr

Compatible with a broad range of mini and mid-size excavators. Contact us if you need help identifying the correct idler for your machine.

Key Features

• High-Strength Steel Construction: Precision-forged and heat-treated to withstand heavy front-end loads and abrasive terrain.
• Sealed, Lubricated Design: Bearings run in oil within a fully sealed hub to prevent contaminants from entering and ensure long-term reliability.
• Smooth Track Guidance: Maintains proper track alignment and reduces derailment risk for improved stability and operator control.
• Reduced Wear: Helps distribute undercarriage load evenly to extend the life of your tracks, rollers, and sprockets.
• OEM-Style Fitment: Direct-fit replacement designed to match original specifications—simple bolt-on installation with standard tools.

Product Warranty

All excavator idlers come with a 1-year warranty covering manufacturing defects, giving you confidence and reliability for every job site.

How to Confirm the Correct Idler

Confirm your excavator’s make, model, and serial number, then compare your existing idler’s dimensions (overall diameter, center-to-center mount spacing, and shaft diameter) against our specifications before ordering.

If you’re unsure, contact us with a photo of your current idler and your machine ID plate. Our team will help confirm the correct part for your model.

Why Choose Our Idlers

• 1-year warranty with full quality assurance on every batch
• Fast, reliable shipping across Australia
• Expert support from undercarriage specialists
• Competitive pricing and consistent stock availability

Increase undercarriage longevity and machine performance with durable excavator idlers built for Australia’s toughest work environments.