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Custom ODM/OEM SF-1 Oilless Bearing

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Focus on the research and development and production of various new self-lubricating bearings such as SF-1 Oilless Bearing.
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SF-1 Oilless Bearing Manufacturers

The SF-1 series metal composite self-lubricating bearings use low-carbon steel as the base material, the middle layer is a sintered spherical porous copper powder structure, and the working surface is composed of PTFE-based wear-resistant lubricating material. The composite material exhibits excellent mechanical load-bearing performance. The copper powder layer has a dual function: it can effectively dissipate the friction heat during the operation of the bearing, and it can also enhance the bonding strength between the plastic material layer and the steel matrix.

This PTFE material is specially developed for all-dry friction conditions, and has formed a series of products for different lubrication requirements, friction coefficients and service life standards. The PTFE metal composite material developed by SNNOV can maintain optimal performance in various load, speed and temperature conditions with or without external lubrication.

Zhejiang Shuangnuo Bearing Technology Co., Ltd. Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd.
Zhejiang Shuangnuo Bearing Technology Co., Ltd. is China SF-1 Oilless Bearing Manufacturers and Custom ODM/OEM SF-1 Oilless Bearing Factory, 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.
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    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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SF-1 Oilless Bearing Industry knowledge

SF-1 Oilless Bearing Manufacturer

Zhejiang Shuangnuo Bearing Technology Co., Ltd. is a specialized SF-1 Oilless Bearing manufacturer and factory in China, focused on the research, development, and production of self-lubricating composite bearings. Our SF-1 series is built on a low-carbon steel backing, a sintered spherical porous bronze interlayer, and a PTFE-based wear-resistant surface layer. This triple-layer construction delivers high mechanical load capacity, effective heat dissipation, and reliable dry-running performance for demanding industrial applications.

We supply the full SF-1 range—from standard cylindrical bushings to flanged bearings, thrust washers, and slide strips—and support ODM/OEM customization. Our integrated production, from in-house casting of raw materials to CNC finishing, ensures consistent quality and short lead times for global customers.

SF-1 Series Product Range

Each SF-1 variant is engineered for a specific operating condition. We offer the following types to match your application requirements:

Type Key Feature Typical Application
SF-1 General-purpose, maintenance-free Textile, tobacco, automotive, agricultural machinery
SF-1T High PV value for gear pumps Gear, plunger, and vane pumps in hydraulic systems
SF-1W Lead-free, environmentally safe Construction, agricultural, and industrial gearboxes
SF-1P Optimized for reciprocating motion Linear actuators, sliding mechanisms
SF-1D Corrosion-resistant for hydraulic use Hydraulic cylinders, valves, pumps
SF-1B Bronze-based for high load Heavy-duty rotating shafts
SF-1S Stainless steel backing for high temperature High-temperature or corrosive environments
SF-TEX PTFE fabric for extreme corrosion Textile machinery, chemical processing
SF-1F Flanged design for axial location Applications requiring easy mounting
SF-1 WC Thrust washer configuration Axial load support in gearboxes
SF-1SP Slide strip for linear wear surfaces Guide rails, wear plates

Application Fit and Engineering Value

SF-1 bearings are designed to operate without external lubrication, making them ideal for locations where maintenance access is difficult or where oil contamination must be avoided. Common sectors include port machinery, construction equipment, rolling stock, mining machinery, mold guides, and light industrial automation.

We provide application engineering support to select the correct SF-1 variant based on load, speed, temperature, and environmental factors. Our team works with your drawings to recommend the optimal material grade and configuration, ensuring reliable performance and extended service life.

Critical Specifications and Performance Data

Our SF-1 bearings are manufactured to tight tolerances and verified through rigorous testing. Typical performance parameters include:

  • Static load capacity: up to 250 N/mm²
  • Max PV (dry running, continuous): 1.8 N/mm²·m/s
  • Operating temperature range: -195°C to +280°C
  • Friction coefficient: 0.05 to 0.20
  • Max dry running speed: 2 m/s

These values are achieved through our controlled sintering process and precision finishing. We can provide detailed test reports upon request.

Quality Assurance and Testing

As a quality-focused SF-1 Oilless Bearing supplier, we maintain strict control from raw material to finished product. We independently cast our copper alloys and perform spectrometer analysis three times—before, during, and after melting—to confirm material composition. We also commission national testing agencies for periodic verification of mechanical properties and can supply authoritative reports.

Our factory is equipped with over 80 CNC machines, lathes, and machining centers, enabling integrated production and consistent dimensional accuracy. Every batch is inspected to ensure it meets your specifications.

Customization and Configuration Options

We offer ODM/OEM services for SF-1 bearings, including custom sizes, flanges, grooves, and surface treatments. Whether you need a standard metric bushing or a special profile, we can manufacture to your drawings. Our engineering team will work with you to define the correct material grade and dimensional tolerances for your application.

For related self-lubricating solutions, explore our JDB Solid-lubricating Bearing and SF-2 Boundary Lubricating Bearing lines.

Information We Use to Configure Your Solution

To prepare an accurate quotation and design, please provide the following details:

  • Bearing type (e.g., SF-1, SF-1T) and dimensions (ID, OD, length)
  • Operating load (radial/axial) and speed
  • Temperature range and environmental conditions (humidity, chemicals)
  • Shaft material and surface finish
  • Lubrication availability (dry, boundary, or hydrodynamic)
  • Required quantity and target delivery schedule

With this information, we can recommend the optimal SF-1 variant and provide a detailed proposal.

FAQs

What is the difference between SF-1 and SF-1T?

SF-1 is a general-purpose bearing for dry or boundary lubrication, while SF-1T has a specially formulated PTFE surface for high PV applications like gear pumps, where hydrodynamic lubrication is present. SF-1T offers a higher PV limit (up to 120 N/mm²·m/s) under hydrodynamic conditions.

Can SF-1 bearings be used without any lubrication?

Yes, SF-1 bearings are designed for maintenance-free operation. The PTFE-based surface layer provides self-lubrication, eliminating the need for oil or grease in most applications.

Do you provide custom sizes?

Absolutely. We offer ODM/OEM services and can manufacture SF-1 bearings to your exact specifications, including non-standard dimensions and special features like flanges or grooves.

What quality documentation do you supply?

We provide material certificates, inspection reports, and, upon request, authoritative test reports from national agencies confirming chemical composition and mechanical properties.

What is the typical lead time?

Lead time depends on the complexity and quantity. Our integrated production allows us to organize material quickly, and we will confirm a specific schedule when you submit your inquiry.

Related Products and Categories

Our portfolio also includes PREV：Self Lubricating SF-1T Metal Gear Pump Bearing Bronze Bushings for applications with different operating ranges, interfaces or integration requirements.