High manganese steel or low-carbon alloy steel inherently possesses excellent strength and toughness. When used for excavator bucket teeth, these materials meet the strength and toughness requirements. If surface hardening techniques are further applied to them, the bucket teeth can achieve not only high wear resistance but also retain good plasticity and toughness.

Currently, the main surface hardening methods include hammer peening, shot peening, explosive hardening, and hardfacing. Among these, hardfacing is more widely used in countries such as Russia and Germany. The materials used for hardfacing mainly include WC cemented carbide and Ni-, Mo-based high-chromium white cast iron. This method can be applied both to the manufacturing of new bucket teeth and to the repair of worn-out ones.

Generally, hardfaced materials do not require additional heat treatment. However, if the welding quality is poor, the hardfaced layer may peel off during use. Moreover, researchers, based on the characteristics of composite materials and the performance requirements of excavator bucket teeth, have developed insert-type bucket teeth and electroslag cast bucket teeth using different processes. The aim is to form a wear-resistant layer on the surface while maintaining high plasticity and toughness in the core. The main advantage of this method is its simplicity, but it also demands high process quality.

In addition, with the advancement of surface engineering technologies, methods such as thermal spraying, plasma spraying, and laser cladding have also been successfully applied to excavator bucket teeth, significantly enhancing their performance.

Bucket teeth are crucial components of an excavator and are also the most vulnerable to wear. They consist of a tooth base and a replaceable tip, connected by a pin. Since only the tip wears out, replacing it is sufficient, making the quality of the bucket teeth critical for cost-effectiveness.

Manufacturing Process

Bucket teeth are mainly produced via casting, including green sand casting, shell mold casting, investment casting, and forging.

• Green sand casting is inexpensive but results in poor surface finish and performance.
• Forged teeth are more durable but expensive and limited in variety.
• Shell mold and precision investment casting offer a balance between cost and performance, widely adopted in the market. We use shell mold and water-glass investment casting for optimal results.

Failure Analysis of Bucket Teeth

1. Failure Modes: Vary depending on working conditions, involving different degrees of wear and impact.
2. Stress Analysis: Different excavation phases apply different forces on the teeth.
3. Process Analysis: Samples taken from front and back surfaces were tested for hardness after polishing.
4. Microstructure Analysis: Metallographic studies show a matrix of dark fine lamellar structures, with inserts composed of white blocky ferrite and dark pearlite or bainite.
5. Performance Evaluation: Wear resistance tests using MLD-10 equipment show our materials outperform quenched 45# steel under low-impact abrasion conditions.

Recently, the SANY SY870E electric large-tonnage excavators were delivered in batches to a major coal mining operation! As a flagship model in the transition to green mining, the SY870E brings zero emissions, low energy consumption, and exceptional performance to support customers’ sustainable upgrades. With astonishing economic advantages, it’s spearheading a new wave of mining equipment revolution. Compared with traditional diesel models, the SY870E reduces total operating costs by over 40%, ensuring that every dollar is spent where it matters most.

Four Core Highlights that Redefine Mining Efficiency

1. High-Power Performance — Energy-Saving Yet Powerful
   Equipped with a 6kV, 380kW high-voltage AC asynchronous motor, delivering 30% more torque!
   It delivers powerful performance comparable to diesel engines — but with zero exhaust and low noise, turning the black-smoke mining era into history.
2. Intelligent Control — Precision at Your Fingertips
   With a world-leading dual-pump fully electric-controlled hydraulic system, it intelligently allocates flow and power to handle complex conditions with ease.
   Optional features like auto-lubrication and multi-dimensional safety monitoring make operating so intuitive that even beginners perform like pros, while slashing maintenance costs by an additional 20%.
3. Ultra-Durable Build — Engineered for Harsh Environments
   The undercarriage features reinforced design: dual-rib wear-resistant tracks with enhanced grip, plus 30% load-bearing boost for carrier rollers — tackling rugged terrain with ease.
   The fully-welded lower structure uses robotic ship-style welding and 100% ultrasonic inspection, increasing service life by 50% even in extreme conditions.
4. Smart Mining — The Future Is Here
   Powered by sensor-based closed-loop systems, the SY870E enables intelligent assisted operations and remote diagnostics.
   It supports customized functionality development to deliver tailor-made intelligent solutions for specific mining needs.

Intelligent Zero-Carbon Mining, Shaping a Greener Future

SANY Smart Manufacturing — United for Green

As a global leader in equipment manufacturing, SANY embeds the “green gene” deep into its DNA. From in-house development of core components to breakthroughs in all-electric mining solutions, we continually raise industry standards with technological strength and innovation. The launch of the SY870E marks not only a milestone in SANY’s dual-carbon strategy, but also a firm commitment to making mining cleaner and the world more sustainable.

Looking ahead, SANY will continue to innovate with purpose and partner with stakeholders worldwide to blueprint the green mine of tomorrow — reducing every gram of carbon emissions through cutting-edge technology and protecting every inch of our beautiful planet with extreme efficiency.

Small but Mighty: Unleashing Power with Precision

With powerful breakout force in a compact body, the L901H and L902H compact wheel loaders from Shandong Lingong (SDLG) redefine efficiency in the small-tonnage segment. These "mini powerhouses" inherit SDLG’s legacy of high quality and reliability, while incorporating innovative design and outstanding performance to offer users efficient, energy-saving, and safe operation solutions. Whether on small construction sites or in complex working conditions, the L901H and L902H handle it all with ease—demonstrating SDLG's deep technical expertise and keen market insight in the construction machinery industry.

Proprietary Technology for a Perfect Balance of Traction and Agility

The L901H is equipped with SDLG’s proprietary drive system, designed to maintain exceptional traction across a variety of terrains—be it soft ground, rugged landscapes, or confined spaces. Its superb adaptability ensures optimal performance in any scenario. The L902H builds on this foundation with enhanced structural design, delivering improved stability and work efficiency, making it especially well-suited for tasks requiring greater loading capacity.

Efficient Powertrain: Fuel-Saving and Eco-Friendly

Both models are powered by the Kubota D1703 high-displacement engine with a rated output of 18.2 kW. Renowned for its efficiency and low fuel consumption, this engine operates stably at low RPMs—minimizing vibration and noise while significantly reducing fuel use. This translates into lower operating costs and extended engine lifespan, ensuring reliable performance even during prolonged, high-intensity operations.

User-Friendly Maintenance and an Upgraded Operating Experience

SDLG is committed to delivering convenience in both operation and maintenance. The engines in both the L901H and L902H feature multiple access ports, located at the rear and beneath the operator seat, allowing for easy routine maintenance and servicing. This design reduces downtime and boosts machine uptime. Additionally, both models are equipped with ergonomically designed throttle levers, enabling operators to adjust engine speed in real-time based on working conditions—achieving precise control and enhanced efficiency.

Certified Safety: Durable, Reliable, and Built to Last

Safety is a top priority. The L901H and L902H have both passed stringent ROPS (Roll-Over Protective Structure) and FOPS (Falling Object Protective Structure) certifications. Their reinforced canopy structures ensure operator safety under challenging work conditions. Constructed with high-strength steel and advanced manufacturing processes, these machines offer exceptional durability and impact resistance—capable of withstanding harsh environments and providing users with dependable long-term support.

Specifications Comparison: Meeting Diverse Operational Needs

While both the L901H and L902H share the same core technology and powertrain, they differ significantly in bucket capacity, operating weight, and overall dimensions—catering to the varied needs of different users and job sites.

As a leading player in China’s construction machinery sector, Shandong Lingong continues to place technological innovation and customer-focused design at its core. The launch of the L901H and L902H compact loaders reflects SDLG’s ongoing efforts in intelligent, energy-efficient, and user-friendly equipment development. Looking ahead, SDLG remains committed to advancing construction machinery and delivering higher performance, greater reliability, and superior service to global users—driving the industry toward high-quality growth.

Introduction

Excavator bucket teeth play a crucial role in the efficiency, durability, and productivity of excavation work. Choosing the right type of teeth and understanding their material characteristics can significantly impact the performance and longevity of your machine. In this guide, we'll explore the different materials used in bucket teeth, how to maintain them, and how to choose the right type based on your working conditions.

Materials of Excavator Bucket Teeth

Forged Bucket Teeth
Forged bucket teeth are typically made from alloy steel. High-pressure forging machines apply force to heated metal blanks, causing plastic deformation and refining the grain structure of the metal. This process enhances the internal structure, giving forged teeth excellent mechanical properties, improved wear resistance, and longer service life.

Cast Bucket Teeth
Cast bucket teeth are usually made from austenitic ductile iron. In this process, liquid metal is poured into molds shaped like the desired part and allowed to cool and solidify. Cast teeth offer good wear resistance and penetration performance.

Comparison
Overall, cast teeth generally have less wear resistance, toughness, and penetration ability compared to forged teeth, due to their material structure. However, they are lighter, offer decent hardness, and are more cost-effective.

How to Maintain Bucket Teeth and Adapters

1. Choosing the Right Bucket Teeth
   Selecting the appropriate bucket teeth is key to extending the working life of your excavator and improving penetration performance. Well-matched teeth and accessories lead to faster operation cycles and material savings.
2. Rotating and Switching Positions
   During operation, the outer teeth of the bucket wear about 30% faster than the inner ones. After some use, rotating or swapping the teeth can help extend service life and maintain productivity.
3. Proper Digging Technique
   When operating the excavator, try to keep the bucket teeth perpendicular to the work surface when digging. Excessive tilt can cause the teeth to break.
4. Surface Coating for Protection
   Applying a tungsten coating to the bucket teeth and accessories can significantly reduce maintenance costs and improve overall machine efficiency.

Which Type of Bucket Teeth is Best for Replacement?

The best bucket teeth for your machine depend on the type of excavator and the primary working environment. Here's a general guide:

1. Standard Bucket Teeth
   Moderate hardness and impact toughness. Suitable for general-purpose conditions.
2. Mining Bucket Teeth
   Higher hardness with moderate impact toughness. Designed for heavy impact environments such as mining.
3. Special-Purpose Bucket Teeth
   High hardness and high impact toughness. Best for severe wear and impact working conditions.

Conclusion

Understanding the material differences, maintenance strategies, and selection criteria for bucket teeth will help you maximize your excavator's performance and minimize operating costs. Whether you're working in general earthmoving, mining, or extreme environments, choosing the right bucket teeth makes all the difference.

If you need assistance in selecting the right teeth for your machine or specific job site, feel free to reach out!