Undercarriage is the biggest maintenance cost on a tracked excavator — and correct track specification is the biggest variable in how long it lasts. This track roller u55 rd441-21702 is built to OEM pitch and material specification to maximise service life and protect sprockets and rollers.

Compatible Machines
– RD441-21702
– U55

Why Choose This Track Roller U55 RD441-21702
– OEM pitch maintained to ±0.2mm tolerance — correct sprocket engagement from new
– High-carbon alloy pin and bush; surface-hardened at the wear interface for maximum service life
– Shoe bolt holes matched to OEM spacing for standard track shoe fitment

Heavy-Duty Construction
This track roller u55 rd441-21702 is manufactured using forged track link for superior fatigue resistance at the pin boss and shoe bolt holes. Induction-hardened rail surface for correct roller and idler contact wear resistance. Sealed and lubricated pin/bush joints reduce re-greasing intervals and extend bushing service life. Designed to withstand vibration, impact loads, and harsh operating environments commonly found in construction, quarry, mining, and earthmoving applications. Precision manufacturing helps ensure correct fitment and long service life.

Applications
Suitable for a wide range of heavy equipment and undercarriage systems including:
– Excavators
– Dozers
– Loaders
– Track roller assemblies
– Earthmoving machinery undercarriage components

Maintenance Recommendations
– Track tension to OEM specification
– Inspect sprocket tooth height at each track replacement
– Operate in correct shoe width for the ground conditions

Australia-Wide Supply
We supply high-quality track roller u55 rd441-21702 replacement parts across Australia with shipping from NSW. Suitable for aftermarket heavy equipment repairs and undercarriage maintenance applications.