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Doosan DH55 Front Idler Assembly 150101-00023 Excavator Undercarriage Track Idler Heavy Duty Replacement Parts

Model: DH55ID

USD $180.00 - $320.00 / Pieces

Min. Order: 1 Pieces

Product Name:
Front Idler
Part Type:
Front Idler Assembly
Application Brand:
Doosan / Daewoo
Compatible Models:
DH55 / DH55LC
Supported Trade Terms:
FOBEXW
Lead Time:
in stock
Supply Ability:
10,000 Pieces
Shipping Port:
Xiamen, China
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Product Features & Applications

Heavy-duty Front Idler Assembly for Doosan DH55 crawler excavators. The front idler is an important undercarriage component installed at the front of the crawler frame. It guides the track chain, maintains proper track alignment and works together with the track tension adjustment system to ensure smooth machine movement and stable operation. Manufactured from high-strength alloy steel with precision machining, controlled heat treatment and reliable sealing technology, our DH55 front idler provides excellent wear resistance, impact strength and long service life under demanding construction and earthmoving conditions. Designed as an OEM-style aftermarket replacement for Doosan DH55 excavator undercarriage systems. Please provide your machine model, serial number, OEM part number or idler dimensions before ordering to confirm exact compatibility.

Product Overview

The Front Idler Assembly, also known as Track Idler or Guide Wheel, is installed at the front section of crawler excavator undercarriage.

Its main functions include:

  • Guiding the track chain during machine travel
  • Maintaining correct track alignment
  • Working with the hydraulic track tension system
  • Absorbing impact loads from uneven ground
  • Improving undercarriage service life

For compact excavators such as Doosan DH55, the undercarriage system operates under frequent travel, excavation impact and variable ground conditions.

A worn or damaged front idler may cause:

  • Track chain deviation
  • Abnormal vibration
  • Uneven track wear
  • Increased travel resistance
  • Premature wear of track rollers and track chains

Our DH55 front idlers are manufactured with professional undercarriage production technology, providing reliable replacement solutions for machinery dealers, rental companies and repair workshops.


Key Features & Benefits

Compact Excavator Application

Designed for:

Doosan DH55 / DH55LC

Suitable for:

  • Small construction projects
  • Landscaping
  • Agricultural applications
  • Utility works
  • General excavation

High-Strength Alloy Steel

Manufactured from:

40Mn2 Alloy Steel

Benefits:

  • High impact resistance
  • Strong wear resistance
  • Good fatigue performance
  • Stable operation under repeated loading
  • Extended service life

Precision Heat Treatment

The idler tread surface is processed through controlled induction hardening.

Typical specification:

  • Surface hardness: HRC 50-58
  • Hardening depth: 8mm-12mm

Provides improved resistance against continuous track chain contact.


Reliable Sealing System

Equipped with:

  • Floating oil seals
  • Wear-resistant bushings
  • Lifetime internal lubrication

The sealing system protects internal components from:

  • Dust
  • Mud
  • Water contamination

OEM-Style Direct Replacement

Manufactured according to OEM-style dimensions:

  • Idler diameter
  • Shaft dimensions
  • Mounting dimensions
  • Track contact profile

Suitable for direct replacement after confirming specifications.


Technical Specifications

Item Specification / Detail
Product Type Excavator Front Idler Assembly
Machine Model Doosan DH55
Compatible Models DH55 / DH55LC
Machine Type Crawler Excavator
Machine Class Approx. 5-6 Ton
OEM Part Number 150101-00023 / 150101-00024
Material Grade 40Mn2 Alloy Steel
Manufacturing Process Casting + CNC Machining
Heat Treatment Induction Hardening
Surface Hardness HRC 50-58
Hardening Depth 8mm-12mm
Seal System Floating Oil Seal
Lubrication System Lifetime Internal Lubrication
Structure Heavy-duty Idler Assembly
Quality Inspection Dimension, Hardness and Sealing Inspection
Mounting Configuration OEM Standard
Installation Bolt-on Direct Replacement
Application Construction / Earthmoving / Agriculture
Shipping Note Heavy Component — Sea Freight Recommended
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