Product Overview

The Track Roller — also known as Bottom Roller or Lower Roller — is a key undercarriage component installed beneath the track frame of Doosan DX150 crawler excavators.

The bottom roller carries the machine operating weight, supports the track chain and maintains correct crawler alignment during travelling and excavation operations.

For a 15-ton class excavator, the track roller works under continuous loading conditions including:

• Machine weight pressure
• Impact from uneven terrain
• Soil and gravel abrasion
• Mud and water exposure

A worn or damaged track roller may cause:

• Track chain deviation
• Increased travelling vibration
• Uneven track wear
• Accelerated sprocket and idler wear
• Higher maintenance costs

Our Doosan DX150 track rollers are manufactured according to OEM-style drawings and production standards, providing reliable aftermarket replacement solutions for construction contractors, equipment dealers and repair workshops.

Key Features & Benefits

Wide Compatibility

Designed for:

• Doosan DX150
• Doosan DX150LC
• Doosan DX150-7
• Doosan DX150-9
• Daewoo DH150

Reference OEM numbers:

• 2270-1098
• 200104-00012A
• 200104-00021
• 200104-00044A

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
• Good fatigue resistance
• Extended service life

Advanced Heat Treatment

The roller tread surface is induction hardened:

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

Provides resistance against:

• Gravel abrasion
• Hard soil wear
• Continuous working loads

Reliable Floating Seal System

Equipped with:

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

Designed to prevent:

• Oil leakage
• Dust intrusion
• Mud and water contamination

OEM-Style Direct Replacement

Manufactured with:

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

Provides direct bolt-on replacement without modification.

Technical Specifications

Why Trust Our Undercarriage Solutions?

For a 15-ton class excavator like Doosan DX150, undercarriage parts are among the most frequently replaced wear components.

A reliable track roller helps:

• Maintain track alignment
• Reduce crawler vibration
• Extend track chain service life
• Protect sprocket and idler components
• Reduce machine 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.