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Excavator · Dozer · Mining Truck Parts Manufacturer
12 Months / 4,000 Hours Warranty
Wide Product Range
Factory Direct Pricing
Cost-Effective Solutions
Excavator · Dozer · Mining Truck Components Manufacturer
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EXCAVATOR
BULLDOZER
HYDRAULIC MINING SHOVEL
MINING DUMP TRUCK
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Boom
Boss
Bushing
Center Joint
Cylinder
Idler
Link Assembly
Pin
Roller
Side Link
Spring
Sprocket
Track Cylinder Adjuster Assembly
Track Frame
Track Guard
Track Shoe Link
Yoke
Bogie
Bulldozer Equaliser Bar
Frame As-Track Roller
Idler
Roller
Track Cylinder Adjuster Assembly
Track Frame
Track Guard
Track Shoe Link
Hydraulic Cylinder GP
Idler
Roller
Sprocket
Track Shoe Link
Link Assembly
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Featured Products
We have established long-term cooperative relations with many Mining Company.
About JIARUN
Focused supplier of aftermarket parts for mining and construction equipment.
Established in 2011, Shandong JIARUN Precision Machinery Manufacturing Co., Ltd. is a factory-based manufacturer specializing in structural and undercarriage components for excavators, dozers, and mining trucks.
All products are manufactured in accordance with OEM specifications and industry standards, supported by strict quality control and stable production processes. Selected components are structurally improved to meet or exceed original performance requirements.
We manufacture aftermarket structural and undercarriage components for mining and construction equipment, including track frame assemblies and fabricated support structures, undercarriage, spare parts.
Why Choose Us
Manufacturing Expertise
Established in 2011, JIARUN is a factory-based manufacturer specializing in structural and undercarriage components for excavators, dozers, and mining trucks.
We maintain controlled production processes and stable manufacturing standards.
Quality Standards
Downtime costs.
Failure is not an option.
OEM-spec manufacturing.
Reliability Quality first!
Warranty Support
We provide up to 12 months or 4,000 operating hours warranty, depending on product and application.
Technical support and after-sales service ensure reliable long-term operation.
Continuous Innovation
JIARUN continuously develops aftermarket products that are not widely available in the market.
We focus on high-cost and long lead-time OEM components, offering alternatives such as brand-new CAT D8–D11 dozer track frames, mining truck brake discs, brake cylinders, spindles, hard arms and structural parts.
Wide Product Range
With over 3,000 parts available, we supply structural, undercarriage, and mining equipment components.
Both standard replacement parts and customized manufacturing projects are supported.
Factory Direct Advantage
Direct manufacturing means no unnecessary intermediary costs.
We welcome customers to visit our facility and work with us directly for stable, long-term cooperation.
Our Products fit the following Brands
Supplying selected components to KOBELCO (China)
CAT Full Range Parts, OEM Quality Manufacturer
Certified Quality
✦ Certified under ISO 9001:2015 Quality Management System
✦ We ensure every component meets strict industry standards — because in mining, downtime costs money.
What Our Customers Say
Feel free to check out our customer testimonials to learn more about our exceptional quality.
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Feedback from American customers
CONEXPO-CON/AGG 2026, we are coming! Just visit Booth N-11466 @JIARUN
March 3- 7, 2026 @ CONEXPO-CON/AGG | Las Vegas, USA
Email: sales@jiarunmachinery.com
Blog & Support
Explore the latest company activities, exciting cases, and cutting-edge insights of JIARUN
Jun 01,2026
Understanding the Significance of the PC1250-7 21N-27-31191 Sprocket in Heavy Equipment
In the world of heavy machinery, especially within the construction and engineering sectors, components like the PC1250-7 21N-27-31191 sprocket play a pivotal role in ensuring that large machines operate efficiently and effectively. Sprockets are essential parts of the track system used in excavators and other heavy equipment, facilitating the movement of the machinery across various terrains. Th
May 31,2026
Top Trends in Manufacturing Processing Machinery for 2023
Top Trends in Manufacturing Processing Machinery for 2023 Introduction to Manufacturing Processing Machinery Trends The manufacturing sector is in the midst of a transformation, driven by technological advancements, the demand for sustainability, and the necessity for efficiency. As we delve into **2023**, we find an array of trends shaping the landscape of **manufacturing processing machinery**.
May 30,2026
Understanding the Importance of EX1200-5 4445136 SPROCKET in Heavy Machinery
In the realm of manufacturing and construction machinery, the EX1200-5 4445136 SPROCKET plays a pivotal role in ensuring the seamless operation of heavy equipment. This crucial component is designed for use in excavators and other machinery, where it contributes to the power transmission from the engine to the tracks, thus facilitating movement and functionality. The EX1200-5 4445136 SPROCKET is s
May 29,2026
The Role of EX1200-6 Track Shoe in Enhancing Machine Performance
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Understanding the Importance of the PC750/800-7 209-27-51173 Sprocket in Heavy Machinery
In the realm of construction and heavy machinery, the components that drive machines are as vital as the machines themselves. One such component is the sprocket, specifically the PC750/800-7 209-27-51173 sprocket. This part is integral to the drive system of excavators and heavy equipment, and understanding its function can greatly improve operational efficiency. The PC750/800-7 209-27-51173 sproc
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The Role of EX1200-6 Track Adjuster Assembly in Reducing Machinery Downtime
The Role of EX1200-6 Track Adjuster Assembly in Reducing Machinery Downtime Introduction to the EX1200-6 Track Adjuster Assembly In the world of **construction machinery**, efficiency and reliability are paramount. One component that significantly contributes to these qualities is the **EX1200-6 Track Adjuster Assembly**. Designed for heavy-duty applications, this assembly plays a vital role in
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In the realm of construction machinery, components such as the ZX470-5G 9244702 Track Adjuster Assembly are vital to ensuring optimal performance and operational efficiency. This assembly is specifically designed for tracked equipment, playing a critical role in maintaining the tension of the track system. Proper track tension is essential for the effective transfer of power from the engine to the
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The Crucial Role of D155A-5 17A-30-00042 IDLER in Optimizing Machinery Performance
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Essential Insights on PC400/450-7 208-70-72150 BOSS for Construction Equipment Professionals
The PC400/450-7 208-70-72150 BOSS is a vital component in the realm of construction and engineering machinery, specifically designed for use in machinery such as hydraulic excavators. Understanding this part's specifications, applications, and maintenance practices is essential for industry professionals aiming to optimize their equipment's performance. Firstly, the PC400/450-7 series is renowned
May 23,2026
Comparative Analysis of Idler Types: Why the PC650-7 21M-30-00301 Stands Out
Comparative Analysis of Idler Types: Why the PC650-7 21M-30-00301 Stands Out Table of Contents 1. Introduction 2. Understanding Idlers in Heavy Machinery 3. Types of Idlers Used in Construction Machinery 3.1 Roller Idlers 3.2 Suspension Idlers 3.3 Impact Idlers 3.4 Return Idlers 4. Key Features of the PC650-7 21M-30-00301 5. Advantages of Choosing the P
May 22,2026
Understanding the Importance of the PC1250-7 21N-27-31191 Sprocket in Heavy Machinery
In the manufacturing and construction machinery industry, every component plays a vital role in ensuring operational efficiency and reliability. The PC1250-7 21N-27-31191 sprocket is no exception. This component is integral to the performance of excavators and other heavy equipment, facilitating the smooth transfer of power from the drive motor to the tracks. Understanding its specifications and m
May 21,2026
Why Quality Matters in Engineering and Construction Machinery Parts
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May 20,2026
Understanding the Importance of EX1200-5 4445136 Sprocket in Heavy Machinery
When it comes to heavy machinery, every component plays a crucial role in ensuring optimal performance. One such key component is the EX1200-5 4445136 sprocket, an essential part of various engineering and construction machines. Sprockets serve as the interface between the drive mechanism and the tracks or chains of the machinery, facilitating motion and power transfer. The EX1200-5 sprocket is s
May 19,2026
Exploring the Durability of EX1200-6 Track Shoe for Demanding Environments
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How to Choose the Right Manufacturing Processing Machinery for Your Business
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Understanding the Importance of PC750/800-7 209-27-51173 Sprocket in Construction Machinery
In the realm of construction machinery, the efficiency and durability of parts play a significant role in the overall performance of equipment. One such component that often goes overlooked but is essential for the smooth operation of heavy machinery is the sprocket, specifically the PC750/800-7 209-27-51173 sprocket. This article delves into its importance, functionality, and maintenance practice
May 18,2026
High Performance PC3000-6 97076940 SPROCKET for Heavy Duty Excavator Undercarriage Systems
Customized production, OEM services, and bulk supply solutions are also available to meet different market and customer requirements.
May 17,2026
EX1200-6 Track Adjuster Assembly: Enhancing Safety in Heavy Equipment Operations
EX1200-6 Track Adjuster Assembly: Enhancing Safety in Heavy Equipment Operations Introduction to the EX1200-6 Track Adjuster Assembly The **EX1200-6 Track Adjuster Assembly** serves as a crucial component in the realm of heavy equipment operations, particularly for excavators and other tracked vehicles. Designed to maintain optimal track tension, the track adjuster is essential for ensuring machin
May 16,2026
The ZX470-5G 9244702 track adjuster assembly plays a pivotal role in the performance and longevity of construction machinery. This assembly is designed to maintain the optimal tension of the tracks on excavators and other heavy equipment. Proper tensioning is crucial; it ensures that the tracks function efficiently and helps prevent premature wear or failure of both the tracks and the machine's un
May 15,2026
Maximizing Efficiency with D155A-5 17A-30-00042 IDLER in Engineering Equipment
Maximizing Efficiency with D155A-5 17A-30-00042 IDLER in Engineering Equipment Table of Contents 1. Introduction to the D155A-5 17A-30-00042 Idler 2. Understanding the Importance of Idlers in Engineering Machinery 3. Features and Specifications of D155A-5 Idler 4. Benefits of D155A-5 17A-30-00042 Idler in Engineering Equipment 5. Installation Process for the D155A-5 Idler
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Focused supplier of aftermarket parts for mining and construction equipment.
All manufacturers’ names, numbers, symbols and descriptions are used for reference purposes only. It is not implied that any part listed is the product of, or is endorsed by, the respective manufacturers.
All materials on this website are the property of Shandong Jiarun Precision Machinery Manufacturing Co., Ltd.