Liugong CLG945 CLG945E Excavator Track Roller Bottom Roller Lower Roller Undercarriage Track Roller Assembly CLG933 CLG936 CLG939 Heavy Duty Replacement

Product Overview
The Track Roller — also called Bottom Roller or Lower Roller — is the load-bearing roller mounted under the track frame of the Liugong CLG945 excavator. It carries the full machine weight, keeps the track chain aligned, and transfers the load evenly to the ground. A worn or seized track roller causes track misalignment, accelerated wear on the chain and sprocket, and expensive downtime on the jobsite. Our rollers are manufactured to the original dimensional drawings of the Liugong 45-ton undercarriage, covering the CLG945 and CLG945E series and cross-compatible with CLG933, CLG936 and CLG939 for a direct, bolt-on replacement.

Key Features & Benefits

• Broad Compatibility: Fits Liugong CLG945 and CLG945E excavators, cross-compatible with CLG933, CLG936 and CLG939 series — one part number, multiple machine coverage.
• Single & Double Flange Options: Both Single Flange (SF) and Double Flange (DF) versions available to match the exact position on the track frame.
• Heavy-Duty Material: Made from high-strength 40Mn2 forged alloy steel, providing excellent structural integrity and fatigue resistance under constant heavy loading.
• Advanced Induction Hardening: The tread surface is hardened to HRC 52-58 with a hardening depth of 5-10mm, significantly reducing wear from abrasive rocks, sand and dirt.
• Reliable Sealing Technology: Equipped with professional-grade bi-metal bushings and heavy-duty floating seals to prevent grease leakage and keep mud and water out of the bearing area.
• Lifetime Lubrication: Factory-filled and sealed, maintenance-free for the normal service life of the roller.
• True OEM-Style Fit: Manufactured to original drawings with standard hole spacing, shaft diameter and installation method, easy to install without additional modification.

Technical Specifications

Why Trust Our Undercarriage Solutions?
For a 45-ton class excavator like the CLG945, every track roller carries a significant share of the machine's total weight — a failed roller means track misalignment, extra wear on the entire undercarriage and expensive downtime. Every roller we produce is 100% inspected for hardness, dimensional accuracy and sealing quality before shipment. Our goal is to deliver genuine-compatible durability at a competitive price, backed by a clear warranty. Contact us with your machine serial number, current part number and position (left/right, SF/DF) to confirm the correct fitment.