Home / Product / SF-1 Oilless Bearing / High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings
Wholesale High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings

High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings

Product Description:

SF-1B is of high safety factor and is particularly appropriate for high-temperature environments where no oil is efficient and where the machine must be under successive long-period working conditions. This is widely used in the steel metallurgy industry such as bushes for roller grooves of successive casting machines. cement grouting pumps and screw conveyors for cement. It can also be composed in steel housing or fabricated into flanged bushes which can move both in radial and in axial directions.

Product Description

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
Temp. limit   -195℃~+280℃
Friction coefficient   0.05~0.20μ
Max. speed Dry running   2m/s
Hydrodynamic operation   >2m/s
Thermal conductivity   42 W(m•k)-1
Coefficient of thermal expansion  11×10-⁶•K-1

Features
- Safety: High safety factor
- Environment: Suited for high - temp, oil - inefficient conditions
- Workability: Withstands long - term continuous work
 
Applications
- Steel: Bushings for casting machine roller grooves
- Cement: In grouting pumps and screw conveyors
- Mechanics: In steel housings or as flanged bushings (radial/axial movement)

Product Introduction

High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings

The SF-1B bronze bearing is engineered for high-load, low-friction applications, featuring a durable bronze matrix embedded with solid lubricants for maintenance-free, long-lasting performance. Ideal for industrial machinery, agricultural equipment, and heavy-duty transmission systems in high-temperature, high-pressure environments, it significantly reduces wear and energy consumption.


Key Advantages

1. Exceptional Load Capacity

The bronze alloy + steel-backed structure withstands over 30MPa dynamic load, offering 3x longer lifespan than standard bearings—perfect for heavy-duty machinery bearings.

2. Ultra-Low Friction Design

Pre-embedded graphite/PTFE lubricants achieve a friction coefficient of 0.04–0.08, minimizing startup torque for low-speed high-load bearing applications.

3. Self-Lubricating, Zero Maintenance

Patented solid-lubricant technology eliminates grease contamination, ideal for food-grade lubricant bearings or dusty environments.

4. High-Temperature & Corrosion Resistant

Operates in -200°C to +300°C ranges with anti-corrosion properties, meeting high-temperature high-pressure bearing demands.

5. Custom Solutions

Tailored sizes available, including wear-resistant bronze bushings for specialized equipment.


Parameter Value/Feature
Base Material High-Strength Tin Bronze (CuSn8P)
Max Load 30MPa (dynamic) / 60MPa (static)
Friction Coefficient 0.04–0.08
Temperature Range -200°C ~ +300°C
Lubrication Self-lubricating (graphite/PTFE)

Applications

  • Heavy-duty slow-speed bearings: Mining conveyors, port crane shafts
  • High-temperature self-lubricating bearings: Steel mill rollers, heat treatment systems
  • Corrosion-resistant bearing sleeves: Chemical pumps, marine equipment
  • Food-grade oil-free bearings: Pharmaceutical machinery, packaging lines
  • Long-life wear-resistant bushings: Agricultural harvesters, wind turbine gearboxes
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings Suppliers and Wholesale High Load Capacity, Low Friction SF-1B Bronze Bearing | Self-Lubricating Bronze Bushings Company, we are a manufacturer specializing in producing various self-lubricating copper alloy products using centrifugal casting, continuous casting, metal mold casting, and other processes. Its main products include brass, aluminum bronze, tin bronze, and others produced according to national standard grades. It processes and produces various solid inlaid self-lubricating bearing products on this basis . At the same time, it uses sintering technology to produce bimetallic products and many other types of products. Since its establishment nearly 10 years ago, the company has focused on the research development, and production of various new self-lubricating bearings.

In the process of product production, our company has always insisted on independent casting production of raw materials to ensure the quality of products from the source; during the casting process, the whole process is monitored, and the finished product is tested by spectrometer three times before, in and after the furnace to confirm the material composition of the product. The national testing agency is regularly commissioned to test the material composition and mechanical properties of the product, and authoritative test reports can be provided to customers in need; the company implements integrated production from material to finished product processing and has more than 80 sets of advanced CNC machine tools, CNC lathes, machining centers, and other major equipment. The strong production capacity ensures that the material production is organized for customers for the first time, shortening the production cycle.
  • 0+
    Establishment

    Founded in 2014, Shuangnuo has 10 years of experience in the industry.

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    Advanced Equipment

    Strong production capacity ensures that we can organize material production for customers as soon as possible and shorten the production cycle.

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    Happy Clients

    There are more than 5,000 cooperative customers around the world.

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