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Self-Lubricating Composite Bearing Sleeve for Seating Automobiles - China Suppliers & Factory Quality
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Self-Lubricating Composite Bearing Sleeve for Seating Automobiles - China Suppliers & Factory Quality

SF bearings are a leading choice among China suppliers for advanced self-lubricating sliding bearings. Engineered with a unique three-layer composite structure, these bearings excel in environments that demand oil-free lubrication. Their exceptional wear resistance and extended service life make them highly adaptable to challenging conditions, including heavy loads, low speeds, and oscillating movements. As a reliable solution for modern industry, SF bearings are ideal for applications where traditional lubrication is impractical or where maintenance costs need to be reduced. Choose SF bearings from trusted suppliers to enhance your operations and ensure durability in your machinery. Our factory is committed to delivering high-quality products that meet the evolving needs of various industries

    Product Introduction

    The SF bearing is a self-lubricating sliding bearing that adopts a three-layer composite structure as its core design. Through meticulous material selection and structural optimization, it excels in oil-free lubrication, high wear resistance, and adaptability to complex working environments. These features make it an ideal solution for scenarios where traditional lubrication methods are difficult to implement or where high maintenance costs are a concern. SF bearings are widely used in various industrial fields, such as metallurgy, mining, machinery, and automotive industries. They are particularly suitable for scenarios where traditional lubrication is difficult to achieve (such as oil free or difficult to oil environments) or where maintenance costs are high. SF bearings, with their self-lubricating, high wear-resistant, and adaptable features, have become a new type of bearing that can replace roller bearings, oil containing bearings, and copper alloy bearings, and are widely used in various industrial fields.

    Features
    • 1SF bearings do not require external lubrication and are suitable for scenarios where refueling is not possible or maintenance is difficult.
    • 2The friction coefficient of SF bearings is low, with a dry friction of approximately 0.04~0.20, reducing energy loss and heat generation.
    • 3SF bearings have high wear and corrosion resistance — PTFE layer is resistant to chemical corrosion and bronze powder layer enhances wear resistance.
    • 4SF bearings have good running-in performance, protecting the surface of the grinding shaft and avoiding shaft biting.
    • 5SF bearings have low noise and seismic resistance, which can reduce mechanical vibration and operating noise.
    • 6SF bearings have high adaptability and a wide temperature range, with a working temperature range of -195 ℃ ~ +240 ℃.
    Application

    SF bearings are commonly used in printing machines, Food Machinery, textile machines, micro motors, automotive suspension systems, agricultural machinery etc.

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    sf (1)
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    Parameters
    Max. load Static 250N/mm²
    Very low speed 140N/mm²
    Rotating oscillating 60N/mm²
    Max. PV Dry running Short-term operation 3.6N/mm²*m/s
    Continuous operation 1.8N/mm²*m/s
    Operation Temperature range -195ºC ~ +280ºC
    Friction coefficient 0.03 ~ 0.20
    Max speed Dry running 2m/s
    Hydrodynamic operation >2m/s
    Thermal conductivity 42W(m*K)⁻¹
    Coefficient of thermal expansion 11×10⁻⁶×K⁻¹
    Frequently Asked Questions
    What is an SF bearing and what makes it different from conventional bearings?
    SF bearings are self-lubricating sliding bearings built on a three-layer composite structure (steel backing, bronze powder sintered layer, and PTFE surface layer). Unlike conventional bearings, they require no external oil or grease, making them ideal for maintenance-free and hard-to-access applications.
    What temperature range can SF bearings operate in?
    SF bearings have an exceptionally wide working temperature range of -195 ℃ to +280 ℃, making them suitable for both cryogenic and high-temperature industrial environments.
    What is the friction coefficient of SF bearings?
    The friction coefficient of SF bearings ranges from 0.03 to 0.20 under dry running conditions. This low friction reduces energy consumption and minimizes heat generation during operation.
    In which industries are SF bearings most commonly used?
    SF bearings are widely applied in metallurgy, mining, printing machines, food machinery, textile machines, micro motors, automotive suspension systems, and agricultural machinery — especially in environments where conventional lubrication is impractical.
    Can SF bearings replace roller bearings and copper alloy bearings?
    Yes. SF bearings are engineered as a modern replacement for roller bearings, oil-impregnated bearings, and copper alloy bearings. Their self-lubricating and high wear-resistant properties offer a cost-effective and low-maintenance alternative.
    What is the maximum load capacity of SF bearings?
    Under static conditions, SF bearings can withstand a maximum load of 250 N/mm². For very low-speed applications, the limit is 140 N/mm², and for rotating or oscillating motion, it is 60 N/mm².