Bottom Roller Caterpillar 315, 317, 320, 320D

Excavator Bottom Rollers for Stable, Hard-Wearing Undercarriage Support

Keep your excavator tracking straight and working safely with heavy-duty bottom (track) rollers engineered to carry the full machine weight and support the lower section of the rubber track. Designed for Australian construction, landscaping, and civil works, these rollers help minimise undercarriage wear, reduce vibration, and improve machine stability on rough ground.

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 323DCaterpillar 323D LCaterpillar 323D LnCaterpillar 323F LCaterpillar 325F Lcr

Compatible with a wide range of mini excavator makes and models. Contact us if you need help confirming the correct bottom roller for your machine.

Key Features

• Heavy-Duty Load Bearing: Robust forged steel roller body and high-strength shaft designed to support full machine weight and absorb dynamic impact loads.
• Hardened Wear Surfaces: Induction-hardened tread and flanges to resist abrasion from rocks, dirt, and debris, extending roller and track life.
• Oil-Filled, Sealed Design: Internal bearings run in oil with multi-lip seals to retain lubrication and keep dust, mud, and water out for long service intervals.
• Straight, Stable Tracking: Supports and guides the lower track to reduce derailment risk, improve operator comfort, and minimise stress on sprockets and idlers.
• Low Maintenance: Maintenance-free sealed unit—no daily greasing required, only periodic visual checks as part of your undercarriage inspection.
• Direct-Fit Replacement: Built to OEM-style dimensions for fast bolt-on replacement using standard workshop tools.

Product Warranty

All excavator bottom rollers include a 1-year warranty, covering manufacturing defects to give you confidence and peace of mind on every job.

How to Confirm the Correct Bottom Roller

To ensure proper fitment, confirm your excavator’s make, model, and serial number, and where possible measure your existing bottom roller (overall length, flange-to-flange distance, body diameter, and shaft diameter) and compare with our specifications before ordering.

If you are unsure, contact us with photos of your current bottom rollers installed on the track frame, plus a photo of your machine ID plate, and we can help match the correct part.

Why Choose Our Bottom Rollers

• Backed by a 1-year warranty and strict quality control on every production batch.
• Fast Australia-wide shipping and responsive after-sales support.
• Expert guidance from undercarriage specialists to help you select the right bottom roller.
• Competitive pricing across popular mini excavator makes and models.

Protect your tracks, reduce downtime, and keep your excavator working harder for longer with durable, reliable bottom rollers built for tough Australian worksites.