Komatsu PC2000-8 Excavator 21T-32-00025

Track Chain Assembly for Komatsu PC2000-8 Excavator | 21T-32-00025

Product Overview

The track chain assembly (also known as track link assembly or undercarriage track chain) is a critical component of your Komatsu PC2000-8 mining excavator's undercarriage system. This heavy-duty track chain consists of precision-engineered track links, pins, and bushings that form the continuous loop connecting the track shoes. The track chain engages with the drive sprocket, travels around the idler and rollers, and supports the 200-ton machine while providing traction in demanding mining and quarry environments.

The Komatsu PC2000-8 is a 200-ton class hydraulic excavator powered by the Komatsu SAA12V140E-3 engine delivering 713 kW (970 PS) . This genuine Komatsu track chain assembly (Part No. 21T-32-00025) is engineered to exacting OEM specifications for perfect fit, reliable performance, and maximum service life in demanding mining applications .

This is a genuine Komatsu original equipment part.

Technical Specifications

Please verify exact specifications with your machine's technical manual or existing component.

PC2000-8 Undercarriage Overview

The Komatsu PC2000-8 features a reinforced undercarriage system designed for heavy-duty mining applications :

Key Undercarriage Features

• Strengthened track components for extended wear life
• Maximum travel speed: 2.7 km/h
• Designed for 200-ton class mining operations

Track Chain Components

The track chain assembly (21T-32-00025) integrates several critical components:

Function & Operation

Operating Principle

1. Drive sprocket engages track bushings
2. Sprocket rotation pulls track chain around undercarriage
3. Track links articulate at pin and bushing joints
4. Track chain transfers motion to track shoes
5. Shoes contact ground, propelling the 200-ton machine
6. Idler and adjuster maintain proper track tension

Wear Mechanism

As the track chain operates, the following progressive wear occurs:

• Pin and bushing outer surfaces wear from sprocket engagement
• Pin and bushing internal surfaces wear from articulation
• Track chain "stretches" as pin/bushing clearances increase
• Proper lubrication and tension management extend service life

Compatible Komatsu Models

Important:Please verify your machine's serial number with our parts department to ensure correct compatibility. The PC2000-8 serial numbers 20001 and up have specific undercarriage configurations documented in the field assembly manual .

Genuine Komatsu Quality

Key Features

• Manufactured to Komatsu's highest quality standards
• Precision-machined link mating surfaces for proper alignment
• Heat-treated components for mining durability
• Available as 21T-32-00025XC (current production version)
• Direct replacement for original equipment

Common Failure Signs

Genuine Part Assurance

Installation Guidelines

Critical Requirements

1. Verify part numbermatches your machine's requirements
2. Prepare adequate heavy lifting equipment- Track chain is extremely heavy
3. Support machine securelywith proper blocking
4. Relieve track tensionbefore removal using track adjuster
5. Use proper track toolsfor master link and chain handling
6. Reference field assembly manualfor PC2000-8 procedures

Installation Steps

1. Position machine on level ground, block securely
2. Relieve track tension using track adjuster valve
3. Remove master link bolts and separate master link
4. Remove old track chain assembly
5. Clean sprocket, rollers, and idler surfaces thoroughly
6. Inspect undercarriage components for wear
7. Position new track chain assembly (21T-32-00025) around undercarriage
8. Align master link and install connecting pins
9. Install master link bolts and torque to Komatsu specifications
10. Apply track tension to specification using track adjuster
11. Test track operation in forward and reverse at low speed
12. Re-torque master link bolts after initial operation
13. Re-check and adjust track tension after test operation

Post-Installation

• Verify smooth track operation in both directions
• Check for proper sprocket engagement with bushings
• Inspect for unusual noise during travel
• Monitor track tension during initial operation
• Re-tension after break-in period (typically 50 hours)

IMPORTANT:According to the PC2000-8 Field Assembly Instruction Manual, proper track adjustment is critical after installation. The procedure includes starting the engine, checking oil and coolant levels, bleeding air from each part, and adjusting track tension . Installation must only be performed by qualified mining equipment technicians following procedures in the Komatsu PC2000-8 Workshop Manual or Field Assembly Instruction Manual .

Maintenance Recommendations

Track Tension Specification

Critical Notes

• Proper track tension is critical for pin, bushing, and sprocket life
• Undercarriage wear is a major maintenance cost on 200-ton excavators
• Regular pin and bushing measurement extends track life
• Worn tracks accelerate sprocket, roller, and idler wear significantly
• Replace undercarriage components in sets for even wear distribution
• The PC2000-8 features strengthened track components for mining durability

Ordering Information

Part Number:21T-32-00025

Latest Version:21T-32-00025XC

Product Name:Track Chain Assembly / Track Link Assembly (Genuine Komatsu)

Application:Komatsu PC2000-8 Hydraulic Excavator

Serial Range:20001 and up

Condition:New Genuine OEM Part

Recommended Related Parts

Cross Reference Information

The part number 21T-32-00025 is listed in Komputer (Komatsu's official parts system) and may be superseded by 21T-32-00025XC depending on current production status . Please verify supersession status with our parts department.

Reference Documentation

The Komatsu PC2000-8 is documented in the following official service publications:

Komatsu PC2000-8 is a registered trademark of Komatsu Ltd. All genuine parts are sourced through authorized distribution channels. Technical specifications reference Komatsu official product literature and field assembly documentation .