Product Overview

The Track Roller — also known as Bottom Roller or Lower Roller — is a key undercarriage component installed beneath the track frame of Hitachi ZX210 crawler excavators.

The bottom roller carries the machine operating weight, supports the track chain and ensures smooth crawler movement during excavation, travelling and construction operations.

For a 20-ton class excavator, the track roller is continuously exposed to:

• Heavy machine loading
• Impact from uneven ground
• Rock and gravel abrasion
• Mud, dust and water contamination

A worn or damaged track roller may result in:

• Track chain misalignment
• Increased travelling vibration
• Uneven track wear
• Premature sprocket and idler wear
• Increased maintenance costs

Our Hitachi ZX210 track rollers are manufactured according to OEM-style drawings, providing reliable aftermarket replacement solutions for construction, rental fleet and earthmoving applications.

Key Features & Benefits

Wide Compatibility

Designed for:

• Hitachi ZX210
• Hitachi ZX210LC
• Hitachi ZX210-3
• Hitachi ZX210-5
• Hitachi ZX210-5G
• Hitachi ZX210-6

Reference OEM numbers:

• 9184516
• YA60015002
• 9231278
• 9134243

Single & Double Flange Options

Available configurations:

• Single Flange (SF)
• Double Flange (DF)

Suitable for different positions on the track frame.

Heavy-Duty Alloy Steel Construction

Manufactured from:

40Mn2 Alloy Steel

Advantages:

• High load-bearing capacity
• Excellent impact resistance
• Strong fatigue resistance
• Extended service life

Advanced Heat Treatment

The roller tread surface is induction hardened:

• Surface hardness: HRC 52-58
• Hardening depth: 5mm-10mm

Improves resistance against:

• Rock impact
• Sand abrasion
• Continuous working loads

Reliable Floating Seal System

Equipped with:

• Heavy-duty floating oil seals
• Premium bushings
• Lifetime lubrication system

Designed to prevent:

• Oil leakage
• Mud intrusion
• Internal bearing damage

OEM-Style Direct Replacement

Manufactured with:

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

Provides direct bolt-on installation without modification.

Technical Specifications

Why Trust Our Undercarriage Solutions?

For a 20-ton class excavator like Hitachi ZX210, undercarriage components are among the most frequently replaced wear parts.

A high-quality track roller helps:

• Maintain correct track alignment
• Reduce crawler vibration
• Extend track chain service life
• Protect sprocket and idler components
• Reduce unexpected downtime

Every roller produced by our factory undergoes strict quality inspection:

• Raw material inspection
• Heat treatment verification
• Dimensional accuracy checking
• Seal performance testing

With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible replacement solutions with stable quality, competitive pricing and warranty support.

Contact us with your machine model, serial number, OEM part number and roller position to confirm the correct replacement.