Bottom Roller Hitachi Zx55U, Komatsu Pc55Mr

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:

Hitachi Zx40U 2Hitachi Zx40U 3Hitachi Zx48U 5Hitachi Zx50U 2Hitachi Zx50U 3Hitachi Zx52U 3Hitachi Zx55U 5AHitachi Zx55Ur 2Hitachi Zx55Ur 3Jcb 8040 ZtsJcb 8045 ZtsJcb 8050 ZtsKomatsu Pc40Mr 1Komatsu Pc40Mr 2Komatsu Pc40Mr 3Komatsu Pc40MrxKomatsu Pc40R 8Komatsu Pc45Mr 2Komatsu Pc45Mr 3Komatsu Pc45Mr 5Komatsu Pc45MrxKomatsu Pc45R 8Komatsu Pc50Mr 2Komatsu Pc50Mr 3Komatsu Pc55Mr 3Komatsu Pc55Mr 5Komatsu Pc58Mr 5Komatsu Pc58Uu 3

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.