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Wholesale SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing, Lead-Free Boundary Bush

SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing, Lead-Free Boundary Bush

Product Description:

SF-2 Boundary Pb-free self-lubricating bearing uses steel-backing as its structure, sintered porous bronze as its interlayer, and surface inlaid the modified POM. Suitable for marginally lubricated and dry operation on the conditions of lubrication indents grease. It has been widely applied to metallurgical machinery, Mine machinery, water conservancy machinery, vapor locomotive, building machinery, agriculture machinery, steel rolling industry, etc.

Product Description

Max. load Static   250N/mm²
Dynamic   140N/mm²
Oscillating   60N/mm²
PV limit Oil   22N/mm²•m/s
Dry   2.8N/mm²•m/s
Max line speed V   2.5m/s
Temp. limit   -40℃~+130℃
Friction coefficient   0.05~0.25μ
Thermal conductivity   13W(m•k)-1
Coefficient of thermal expansion   11×10-•K-1

Features
1. Materials: Steel - backed, sintered bronze interlayer, modified POM surface
2. Lubrication: Lead - free, for marginal lubrication and dry use, works with little grease
 
Applications
Used in metallurgy, mining, water conservancy, agriculture, steam locomotives, construction, and steel - rolling

Product Introduction

SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing, Lead-Free Boundary Bush – High-Performance Self-Lubricating Bearing

The SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing is a high-performance, maintenance-free bearing made from special composite materials. It features excellent wear resistance and self-lubricating properties. As a Lead-Free Boundary Bush, it meets environmental standards and is ideal for high-load, low-speed oscillating or rotating applications. It is widely used in automotive, construction machinery, agricultural equipment, and industrial automation.

  • Self-Lubricating & Maintenance-Free – Embedded solid lubricants eliminate the need for external oiling, reducing maintenance costs in hard-to-reach environments.
  • High Wear Resistance & Long Service Life – Made from high-strength composite materials with a low friction coefficient, ensuring durability and extended equipment lifespan.
  • Eco-Friendly & Lead-Free Design – Complies with RoHS standards, making it safe for food, medical, and other sensitive industries.
  • High Load Capacity – Optimized structural design supports heavy radial loads and impact forces, suitable for heavy-duty machinery.
  • Low Noise & Smooth Operation – The self-lubricating layer minimizes metal-to-metal friction, reducing noise and improving operational stability.

Applications

Automotive Industry

Suspension systems, steering mechanisms, clutch bearings

Construction Machinery

Excavators, forklift joint bearings

Agricultural Equipment

Tractors, harvester transmission components

Industrial Automation

Conveyor belts, packaging machinery sliding parts


Why Choose Our SF-2 Self-Lubricating Bearing?

✅ Strict Quality Control – Every batch undergoes wear resistance and compression testing to ensure consistent performance.

✅ Customization Services – Supports non-standard sizes to meet various operational needs.

✅ Global Certifications – Complies with ISO, ASTM, and other international standards for hassle-free export.

✅ Fast Delivery – Ample inventory supports small trial orders, minimizing lead times.


Frequently Asked Questions (FAQ)

Q: Is the SF-2 Boundary Bushing suitable for high-temperature environments?

A: Yes, it operates reliably between -40°C to +120°C, with short-term tolerance for higher temperatures.

Q: What are the advantages of SF-2 self-lubricating bearings compared to metal bearings?

A: No lubrication required, corrosion-resistant, low noise, and lighter weight—ideal for maintenance-free applications.

Q: Do you offer OEM/ODM services?

A: Yes, we provide material and size customization.

Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing, Lead-Free Boundary Bush Suppliers and Wholesale SF-2 Boundary Self-Lubricating Oilless Sliding Bushing Bearing, Lead-Free Boundary Bush 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.

  • 0+
    Advanced Equipment

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

  • 0+
    Happy Clients

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

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