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ABOUT US

One Of The Earliest Saw Chain Manufacturers In China

Hangzhou Longer Sawchain Co., Ltd. was founded in 2007, a professional manufacturer of garden tool accessories such as saw chains and guide bars. As a famous China chainsaw chains manufacturer and CE saw chains factory, our company is located in the scenic area of Qiantang River, covering an area of 20,000 square meters, with more than 200 employees and more than 30 technicians.
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  • R&D

    A 20-member R&D team, advanced equipment, and techniques, and rigorous quality control ensure high quality.
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  • Capacity

    Annually making more than 7.2 million pieces of saw chains and guide bars, it can meet different kinds of requirements.
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  • Quality

    German-origin raw material, same supplier as STIHL, making high-quality CE saw chain and guide bar.
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  • Strength

    It is a professional saw chain and guide bar manufacturer with 13 years of history.
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24 hours service, you can find us all the time

Raw material imported from German make high quality products.

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Featured News And Resources

  • Rugged Reliability: Maximizing Productivity with Hardnose Bars in Harsh Environments

    In industries where machinery operates in harsh and demanding conditions, the durability and reliability of components play a crucial role in ensuring productivity. Hardnose bars have emerged as essential elements in various applications, providing rugged reliability that withstands the challenges posed by abrasive environments.  Wear Resistance in Abrasive Environments: Harsh environments often involve abrasive materials that can cause significant wear and tear on machinery. Hardnose bars are engineered with materials and coatings that offer exceptional wear resistance. Whether in mining, construction, or agricultural applications, these bars provide a robust solution to combat the abrasive nature of the materials being processed. Extended Service Life: The wear resistance of hardnose bars translates into an extended service life for machinery and equipment. In industries where downtime for maintenance can result in substantial losses, having components with extended durability is a significant advantage. Hardnose bars, with their ability to withstand wear over prolonged periods, contribute to maximizing the operational lifespan of machines. Optimized Performance in Mining Applications: Mining operations, characterized by the extraction of minerals and ores from the earth, expose machinery to severe conditions. Hardnose bars find extensive use in mining applications, particularly in crushers, screens, and other equipment involved in material processing. The wear resistance of these bars is crucial for maintaining the efficiency and reliability of mining machinery, ensuring uninterrupted operations. Tillage and Agricultural Implements: Agriculture involves the use of heavy machinery for tasks such as tillage, planting, and harvesting. In these applications, where equipment comes into direct contact with soil and rocks, hardnose bars provide a resilient solution. The wear-resistant properties of these bars contribute to the longevity and effectiveness of tillage tools and agricultural implements, enabling farmers to optimize their productivity. Construction Equipment and Excavators: Construction sites often present challenging conditions, with heavy machinery required to move and process various materials. Hardnose bars play a vital role in construction equipment, such as excavators and loaders, where they are used in buckets, blades, and other components that come into contact with abrasive materials. The robust construction of hardnose bars ensures reliable performance in these demanding environments. Reduced Maintenance Costs: The durability of hardnose bars not only extends the service life of machinery but also contributes to reduced maintenance costs. With less frequent replacements and repairs, businesses can achieve cost savings in terms of both material expenses and labor associated with maintenance activities. This cost-effectiveness is a compelling factor for industries operating in harsh environments. Customization for Specific Applications: Hardnose bars are often available in various configurations and materials, allowing for customization based on specific application requirements. Industries can choose hardnose bars tailored to the particular challenges they face, ensuring optimal performance in their unique operating conditions. This versatility enhances the adaptability of hardnose bars across different sectors. Enhanced Productivity in Aggregate Processing: Aggregate processing involves the crushing and screening of materials such as gravel, sand, and stone. The wear resistance of hardnose bars is invaluable in crushers and screens, where constant contact with abrasive materials can lead to rapid wear. By withstanding the abrasive forces, hardnose bars contribute to the efficiency and productivity of aggregate processing operations.
    2025-06-27
  • Tough Tools for Tough Jobs: Leveraging the Strength and Versatility of Hardnose Bars

    Hardnose bars represent a category of tools designed for tough and demanding applications across various industries. Leveraging the strength and versatility of Hardnose bars is essential for accomplishing challenging tasks efficiently and effectively. Whether in construction, mining, or manufacturing, these robust tools offer durability and performance. Here's an exploration of how Hardnose bars provide toughness and versatility for demanding jobs: Key Features of Hardnose Bars: High-Strength Materials: Hardnose bars are typically constructed from high-strength materials such as hardened steel or alloys. This construction imparts exceptional toughness, enabling the bars to withstand heavy loads, impacts, and harsh working conditions. Abrasion Resistance: Hardnose bars are engineered to resist abrasion effectively. This feature is particularly crucial in applications where tools are subjected to abrasive materials, ensuring prolonged tool life and reduced maintenance requirements. Versatile Configurations: Hardnose bars come in various configurations to suit different applications. Whether in the form of wear-resistant cutting edges, chisel bits, or other designs, these bars can be adapted to diverse tasks, offering versatility on job sites. Heat Treatment for Durability: Many Hardnose bars undergo heat treatment processes to enhance their hardness and durability. This treatment contributes to the longevity of the bars, making them reliable tools for prolonged use in demanding environments. Compatibility with Heavy Machinery: These bars are designed to be compatible with heavy machinery such as excavators, loaders, and bulldozers. Their robust construction ensures that they can handle the forces exerted by these powerful machines during various applications. Resistance to Deformation: Hardnose bars exhibit resistance to deformation under heavy loads or impacts. This property is crucial for maintaining the structural integrity of the tool during demanding tasks, preventing premature wear or failure. Efficient Material Penetration: Whether used for cutting, breaking, or digging, Hardnose bars are engineered to facilitate efficient material penetration. This efficiency is essential for optimizing productivity and completing tough jobs in a timely manner. Applications of Hardnose Bars: Excavation and Mining: In mining operations, Hardnose bars are employed for excavation, rock breaking, and other tasks requiring robust tools capable of withstanding the abrasive and challenging conditions of mining sites. Construction and Demolition: Hardnose bars find extensive use in the construction industry for tasks such as breaking concrete, trenching, and excavation. Their toughness is well-suited for demanding construction and demolition applications. Quarrying and Rock Processing: In quarries and rock processing facilities, Hardnose bars are utilized for breaking, crushing, and processing rock and aggregate materials. Their durability and abrasion resistance make them valuable tools in these environments. Road Maintenance: Hardnose bars are applied in road maintenance activities, including cutting through asphalt, breaking up concrete surfaces, and excavating roadbeds. Their versatility allows them to handle a range of tasks in road construction and repair. Forestry and Land Clearing: Hardnose bars are adapted for forestry and land clearing applications, where they are used for cutting through dense vegetation, breaking roots, and clearing land for various purposes. Metal Processing: In metal processing industries, Hardnose bars may be employed for cutting and breaking down scrap metal or in the processing of raw materials. Their strength and durability are valuable in these challenging environments. Maintenance and Longevity: Regular Inspection: Regular inspection of Hardnose bars is essential to identify signs of wear, damage, or deformation. Prompt replacement or maintenance can extend the life of the bars and ensure continued efficiency. Proper Lubrication: Proper lubrication of moving parts, if applicable, is important for reducing friction and preventing premature wear. Lubrication can enhance the performance and longevity of Hardnose bars. Operator Training: Adequate operator training is crucial to ensure that Hardnose bars are used correctly and that the equipment is operated within specified parameters. Proper operation contributes to the longevity and efficiency of the tools.
    2025-06-27
  • The Art of Hardnose Machining: Optimizing Performance with Advanced Cutting Bars

    Advanced cutting bars are essential tools in hardnose machining, where the optimization of performance is crucial for achieving precision, efficiency, and cost-effectiveness. These cutting bars, often made from high-performance materials such as carbide or cermet, play a critical role in the machining of hardened steels, superalloys, and other challenging materials. By understanding the art of hardnose machining and the factors that contribute to the optimization of cutting bar performance, machinists can elevate their capabilities in tackling demanding machining tasks. The art of hardnose machining involves the application of advanced cutting bars to achieve superior results in the machining of hardened materials. The performance of cutting bars in hardnose machining is influenced by several key factors, including material selection, tool geometry, coating technology, and machining parameters. Material Selection: Advanced cutting bars are often manufactured from high-performance materials such as carbide, cermet, or cubic boron nitride (CBN). These materials offer exceptional hardness, wear resistance, and thermal stability, making them well-suited for the demanding conditions encountered in hardnose machining. The selection of the appropriate material for the cutting bar is crucial for achieving effective material removal and tool longevity in challenging machining environments. Tool Geometry: The geometry of cutting bars, including the design of the cutting edges, chip breakers, and tool profiles, plays a significant role in optimizing performance in hardnose machining. The geometry of the cutting bar should be carefully engineered to facilitate efficient chip evacuation, minimize cutting forces, and ensure stable and predictable tool behavior during the machining process. Additionally, the design of the cutting edges should be tailored to the specific requirements of hardnose machining, taking into account factors such as material hardness, surface finish, and dimensional accuracy. Coating Technology: Many advanced cutting bars are coated with specialized coatings, such as titanium nitride (TiN), titanium carbonitride (TiCN), or diamond-like carbon (DLC), to enhance their performance in hardnose machining. These coatings provide benefits such as increased tool life, reduced friction, improved wear resistance, and enhanced thermal insulation. The selection of the appropriate coating technology for the cutting bar is essential for maximizing its performance and durability in challenging machining applications. Machining Parameters: Optimizing the performance of advanced cutting bars in hardnose machining also involves the careful selection and control of machining parameters, including cutting speed, feed rate, depth of cut, and coolant application. These parameters should be tailored to the specific material being machined, the tooling configuration, and the desired machining outcomes. By optimizing machining parameters, machinists can achieve efficient material removal, minimize tool wear, and maintain dimensional accuracy and surface finish in hardnose machining operations. The art of Hardnose Bar involves the strategic application of advanced cutting bars to optimize performance in the machining of hardened materials. By considering factors such as material selection, tool geometry, coating technology, and machining parameters, machinists can harness the full potential of cutting bars to achieve precision, efficiency, and cost-effectiveness in challenging machining tasks. This approach to hardnose machining empowers machinists to tackle demanding applications with confidence and achieve superior results in the production of high-quality machined components.
    2025-06-27