Product Overview

The Track Roller, also known as Bottom Roller or Lower Roller, is a critical undercarriage component installed beneath the track frame of Liebherr R944 crawler excavators.

The roller carries a significant portion of the machine operating weight, supports the track chain and maintains correct crawler alignment during travelling and heavy-duty excavation.

For a 40-ton class excavator, track rollers operate under extremely demanding conditions:

• High machine loading
• Heavy impact from quarry and construction environments
• Rock and gravel abrasion
• Continuous vibration
• Mud and dust contamination

A worn or damaged track roller may result in:

• Track chain misalignment
• Increased vibration
• Uneven track wear
• Accelerated sprocket and idler wear
• Increased downtime and maintenance cost

Our Liebherr R944 track rollers are manufactured with professional undercarriage production technology, providing reliable aftermarket replacement solutions for mining contractors, equipment dealers and repair workshops.

Key Features & Benefits

Heavy-Duty Alloy Steel Construction

Manufactured from:

40Mn2 Alloy Steel

Advantages:

• High load-bearing capacity
• Excellent impact resistance
• Strong fatigue resistance
• Suitable for heavy-duty applications

Advanced Heat Treatment

The roller tread surface is induction hardened:

• Surface hardness: HRC 52-58
• Hardening depth: 8mm-12mm

Improves resistance against:

• Rock impact
• Abrasive materials
• Long-hour operation wear

Reliable Floating Seal System

Equipped with:

• Heavy-duty floating oil seals
• Wear-resistant bushings
• Lifetime lubrication system

Designed to prevent:

• Oil leakage
• Dust intrusion
• Water contamination

OEM-Style Direct Replacement

Manufactured with:

• Accurate roller diameter
• Correct shaft dimensions
• Standard mounting specifications

Provides direct bolt-on replacement without modification.

Technical Specifications