Hitachi 1033163 1022168 7147108 Zax330 ZX330 Track Chain Sprocket Wheel Assembly / Mining EXC Undercarriage Part Source Factory and Manufacturer / CQC TRACK

Precision Undercarriage Solutions: Hitachi ZX330 Track Chain Sprocket Wheel Assembly – OEM Part Numbers 1033163, 1022168, 7147108 and the Role of CQC TRACK as a Leading Manufacturer

Author: Jack
Published: April 2, 2026

Introduction

In the demanding world of mining and heavy construction, undercarriage reliability directly determines machine uptime and operational cost. For Hitachi ZX330 and ZAX330 series excavators—widely recognized for their durability in earthmoving and mining applications—the track chain sprocket wheel assembly is a critical wear component. This article provides a detailed technical overview of three key part numbers—1033163, 1022168, 7147108—and examines how CQC TRACK, a specialized manufacturer, delivers high-quality aftermarket alternatives that meet or exceed original equipment standards.

1. Decoding the Part Numbers: Application and Function

Hitachi’s part numbering system for undercarriage components follows a logical structure, with each number corresponding to a specific component within the track drive system. For the ZX330 series, the three numbers referenced are integral to the final drive sprocket assembly.

1.1 1033163 – Sprocket Wheel (Drive Sprocket)

The 1033163 is the primary drive sprocket for Hitachi ZX330-3 and ZX330-5 models. As the interface between the track chain bushings and the final drive motor, this sprocket transfers torque to propel the machine. Its tooth profile is precision-machined to match the chain pitch (typically 215 mm or 225 mm depending on the undercarriage configuration). In mining applications, where high tractive effort and abrasive conditions prevail, the sprocket’s metallurgy and heat treatment are decisive for service life.

1.2 1022168 – Sprocket Segment or Mounting Component

The 1022168 often refers to a sprocket segment (in two-piece or three-piece designs) or a related retaining component used in the assembly. Modern heavy-duty undercarriages utilize segmented sprockets to allow field replacement without removing the final drive. This part number is critical for maintaining proper bolt torque distribution and concentricity, ensuring the sprocket runs true under extreme loads.

1.3 7147108 – Complete Sprocket Assembly or Related Hardware

The 7147108 typically designates a complete sprocket assembly, which may include the sprocket ring, mounting bolts, washers, and sometimes the adapter hub. For mining fleets, sourcing a pre-assembled unit reduces installation errors and standardizes inventory. This assembly is engineered to withstand high shock loads encountered in rock excavation and mine site rehabilitation.

2. Hitachi ZX330 / ZAX330: A Platform Built for Mining and Mass Excavation

The Hitachi ZX330 (marketed as ZAX330 in certain regions) is a 33-ton class excavator widely deployed in quarrying, infrastructure, and surface mining. Its undercarriage is designed for extended life under severe conditions, with heavy-duty track links, reinforced rollers, and a robust drive system.

When replacing sprocket wheels and track chain components, machine owners face a critical choice: original equipment manufacturer (OEM) parts, which carry premium pricing and long lead times, or high-quality aftermarket alternatives. This is where specialized manufacturers like CQC TRACK bridge the gap, offering components that match OEM specifications while improving availability and cost efficiency.

3. CQC TRACK – A Specialized Manufacturer of Undercarriage Components

3.1 Company Profile and Manufacturing Philosophy

CQC TRACK is a dedicated manufacturer of undercarriage parts for excavators, bulldozers, and mining equipment. Unlike generalist suppliers, CQC TRACK focuses exclusively on the track system—from track chains and shoes to sprockets, idlers, and rollers. Their production facility employs advanced forging, CNC machining, and induction heat treatment lines, ensuring each component meets stringent dimensional and mechanical property standards.

3.2 Quality Control and Materials

For sprocket wheels like the 1033163, CQC TRACK utilizes high-carbon alloy steel (e.g., 35MnB or equivalent) , forged to refine grain structure. Tooth surfaces undergo induction hardening to achieve a hardness depth of 6–10 mm (HRC 52–58), providing excellent wear resistance while maintaining core toughness to resist cracking under impact. Every batch is tested for hardness profile, chemical composition, and tooth geometry using coordinate measuring machines (CMM).

3.3 OEM Interchangeability

CQC TRACK’s sprocket assemblies are manufactured as direct replacements for Hitachi part numbers 1033163, 1022168, and 7147108. Bolt hole patterns, pilot diameters, and offset dimensions are reverse-engineered from OEM samples and validated on ZX330 undercarriage fixtures. This ensures seamless installation without modification to the final drive or track frame.

4. Technical Advantages of Aftermarket Sprocket Assemblies for Mining

Mining operations prioritize component life, maintenance predictability, and total cost of ownership. Below are the key engineering aspects where CQC TRACK’s sprocket wheels add value:

4.1 Enhanced Wear Resistance

Original sprockets typically offer a service life of 3,000–5,000 hours in abrasive soils. By optimizing tooth profile geometry and using proprietary heat treatment cycles, CQC TRACK extends sprocket life by 15–20% in controlled field tests, reducing unplanned downtime.

4.2 Segmented Design Flexibility

For the 1022168 component, CQC TRACK supplies both OEM-style segments and an upgraded heavy-duty version with increased bolt strength (grade 12.9 vs. OEM grade 10.9). This is particularly beneficial in mining where bolt fatigue is a common failure mode.

4.3 Assembly Precision

The complete assembly (7147108) is pre-assembled and torqued to factory specifications, eliminating variability in field assembly. Each unit is marked with a traceable serial number, allowing fleet managers to monitor performance across machines.

5. Why Sourcing from the Original Factory (CQC TRACK) Matters

In the aftermarket industry, the term “source factory” refers to the original component manufacturer that supplies both the aftermarket and sometimes the OEM itself. CQC TRACK operates as a first-tier manufacturer with its own foundry, machining centers, and heat treatment lines. This vertical integration provides three distinct advantages:

1. Quality Control from Raw Material to Finished Product – Every production step is controlled in-house.
2. Shorter Lead Times – Stocked finished goods ready for global distribution.
3. Direct Technical Support – Engineering team available to address application-specific needs, such as sprocket modifications for extended track shoe widths.

6. Compatibility and Cross-Reference Guide

For maintenance planners and procurement specialists, the following cross-reference confirms the fitment:

Note: Always verify undercarriage type (standard, long, or heavy-duty) before ordering.

7. Installation and Maintenance Best Practices

To maximize sprocket and track chain life in mining environments, follow these engineering practices:

• Match New Sprockets with New Track Chains – Installing a new sprocket on worn chains accelerates tooth wear due to pitch elongation.
• Inspect Bolt Torque Regularly – For segmented sprockets, re-torque after the first 50 hours of operation.
• Monitor Track Tension – Over-tensioning increases sprocket tooth load; under-tensioning causes chain jumping.
• Lubricate Bolted Joints – Use anti-seize compound on sprocket mounting bolts to prevent galling during future disassembly.

CQC TRACK provides detailed installation manuals with torque specifications and bolt tightening sequences for all their undercarriage components.

8. Conclusion

For Hitachi ZX330 and ZAX330 excavators operating in mining and heavy excavation, the sprocket wheel assembly is a mission-critical component. Part numbers 1033163, 1022168, and 7147108 represent the core elements of this assembly, and choosing a reliable manufacturer directly impacts productivity and cost per hour.

CQC TRACK stands out as a specialized manufacturer that combines metallurgical expertise, precision machining, and mining-focused design to deliver aftermarket undercarriage parts that perform reliably under the toughest conditions. By sourcing directly from the original factory, fleet owners gain access to consistent quality, technical support, and competitive pricing—factors that drive long-term operational success.

Author: Jack
Specializing in heavy equipment undercarriage systems and mining machinery reliability.

This article is original content created for informational and technical reference purposes. All product numbers and manufacturer names are used for identification and cross-reference only.