Product Overview

The Track Roller, also known as Bottom Roller or Lower Roller, is a key undercarriage component installed beneath the track frame of Volvo VD3000 crawler excavators.

It carries a large proportion of the machine operating weight, supports the track chain and ensures smooth crawler movement during travelling and working operations.

A high-quality track roller helps maintain:

• Proper track chain alignment
• Stable travelling performance
• Reduced vibration
• Extended undercarriage service life

During operation, track rollers are exposed to:

• Heavy machine loading
• Uneven terrain impact
• Rock and gravel abrasion
• Mud and water contamination

A worn or damaged roller may cause:

• Track misalignment
• Excessive vibration
• Abnormal travelling noise
• Accelerated wear of track links, sprocket and idler
• Increased maintenance cost

Key Features & Benefits

Heavy-Duty Alloy Steel Construction

Manufactured from:

40Mn2 Alloy Steel

Advantages:

• High load-bearing strength
• Excellent impact resistance
• Strong fatigue resistance
• Long service life under heavy working conditions

Advanced Heat Treatment

The roller tread surface is induction hardened:

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

Improves resistance against:

• Rock impact
• Sand abrasion
• Continuous heavy-duty operation

Reliable Floating Seal System

Equipped with:

• Heavy-duty floating oil seal
• High-quality bushing
• Lifetime lubrication system

Designed to prevent:

• Oil leakage
• Dust entry
• Water contamination

OEM-Style Direct Replacement

Manufactured with:

• Accurate roller dimensions
• Correct mounting specifications
• Stable rotation performance

Provides direct bolt-on replacement without modification.

Technical Specifications