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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
LOAD HAUL DUMP
WHEEL LOADER
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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
Bushing
Hydraulic Cylinder GP
Idler
Roller
Sprocket
Track Shoe Link
Link Assembly
Cylinder
Cylinder
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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
Sep 22,2026
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Understanding the Importance of the PC400/450-7 208-70-72150 BOSS in Construction Machinery
In the realm of manufacturing and construction machinery, the PC400/450-7 208-70-72150 BOSS component plays a pivotal role. This component is specifically designed to enhance the efficiency and performance of heavy equipment, particularly in the hydraulic excavators manufactured by prominent brands. Understanding the intricacies of this part can significantly benefit professionals involved in engi
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6020B 471-7760 SPROCKET for Industrial Equipment and Replacement Applications
6020B 471-7760 SPROCKET provides a practical component solution for chain-driven machinery, replacement projects, industrial equipment maintenance, and customized mechanical transmission requirements.
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The Future of Idler Design: Cutting-Edge Innovations in PC650-7 21M-30-00301 Technology
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The Transformative Effects of Technology on Engineering Processing Machinery
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Essential Insights on the EX1200-5 4445136 Sprocket for Engineering Machinery
In the manufacturing and construction sectors, the EX1200-5 4445136 sprocket is a vital component that plays a significant role in the functionality of various engineering machinery. Understanding its characteristics and applications can help professionals optimize their use and maintenance practices. The EX1200-5 4445136 sprocket is designed to complement the specific requirements of heavy-duty m
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How the EX1200-6 Track Shoe Enhances Traction and Stability in Heavy Machinery
How the EX1200-6 Track Shoe Improves Traction and Stability Understanding the Importance of Track Shoes in Heavy Machinery In the demanding world of construction and engineering, the **performance of heavy machinery** can significantly impact project timelines and safety. One critical component often overlooked is the **track shoe**, which plays a pivotal role in ensuring traction and stability. T
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The PC750/800-7 209-27-51173 sprocket is a vital component in the realm of heavy machinery, particularly in excavators and other construction equipment. Sprockets are essential for the drive system of tracked vehicles, providing the necessary engagement for the track to move effectively. Understanding the functionality and benefits of the PC750/800-7 sprocket can empower operators and maintenance
Aug 29,2026
EX1200-6 Track Adjuster Assembly: The Essential Component for Construction Project Success
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Essential Insights on ZX470-5G 9244702 Track Adjuster Assembly for Construction Machinery
When it comes to the efficient operation of heavy machinery, the ZX470-5G 9244702 Track Adjuster Assembly plays a vital role in maintaining optimal track tension. This component is crucial for ensuring that the tracks of excavators and other construction machinery function smoothly and effectively. An understanding of its design, function, and maintenance can significantly enhance the reliability
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Understanding the Critical Role of the D155A-5 17A-30-00042 Idler in Engineering Mechanisms
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Understanding the Role of PC400/450-7 208-70-72150 BOSS in Construction Machinery
In the manufacturing and engineering machinery sector, components like the PC400/450-7 208-70-72150 BOSS play a crucial role in ensuring operational efficiency and reliability. This particular model is often associated with hydraulic excavators, particularly from the Komatsu PC series. Understanding its functionality is essential for professionals involved in construction machinery and accessories
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345/349 248-7151 IDLER: Reliable Conveyor Support Component for Heavy-Duty Applications
the 345/349 248-7151 IDLER delivers consistent performance and dependable value for industrial applications.
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Essential Insights into the Key Features of the PC650-7 21M-30-00301 Idler
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Understanding the Importance of the PC1250-7 21N-27-31191 Sprocket in Construction Machinery
In the realm of engineering and construction machinery, the PC1250-7 21N-27-31191 sprocket plays a vital role in ensuring smooth operation and optimal performance. Sprockets are mechanical components that engage with tracks or chains to facilitate movement in heavy machinery, particularly excavators, bulldozers, and other tracked vehicles. Understanding the function and maintenance of the PC1250-7
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Understanding the Importance of the EX1200-5 4445136 Sprocket in Heavy Machinery
In the realm of manufacturing and construction machinery, the EX1200-5 4445136 sprocket serves as a fundamental component that ensures the smooth operation of heavy equipment. As a vital part of the drive system, this sprocket directly influences the efficiency and performance of machinery, making it essential for professionals in the engineering and construction sectors to have a comprehensive un
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Understanding the Importance of PC750/800-7 209-27-51173 SPROCKET in Heavy Machinery
In the realm of heavy machinery, components such as the sprocket play an essential role in ensuring operational efficiency and longevity. The PC750/800-7 209-27-51173 sprocket is a prime example of a vital part used in excavators, specifically within the Komatsu PC750 and PC800 series. Understanding the functionality and maintenance of this specific sprocket can greatly benefit professionals invol
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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.