Project Description

Oil-free Bushing Supplier

Oil-free bushings, also known as self-lubricating or dry bushings, are an innovative solution for reducing friction in various applications without the need for oil or grease. These specialized bushings are designed with materials that have inherent self-lubricating properties, making them an excellent choice for maintenance-free operation.

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Low Friction

improving the overall efficiency of your machinery and reducing energy consumption.

High Load Capacity

The combination of bronze and graphite provides a high load-carrying capacity

Long Service Life

The self-lubricating and wear-resistant properties of graphite plugged bronze bushings contribute to their extended service life

Bearing Design – Shapes and Geometries

Oil-Free Bushing, Straight

  • Low maintenance frequency.

  • Available in metric and imperial sizes from stock

  • Produce non-standard sizes to suit specific customer requirements.

Discover the cutting-edge technology of our Oil-Free Bushing that guarantees optimal performance and durability for your machinery. Say goodbye to traditional lubrication problems and welcome a frictionless future. Our bushing eliminates the need for oil, providing smooth and uninterrupted operations that significantly reduce wear and tear. Whether it’s heavy-duty industrial equipment or precision machinery, this advanced bushing is designed to exceed your expectations. Embrace the future of frictionless motion and revolutionize your machinery with our Oil-Free Bushing.

oil-free bushing

Reliable China Supplier

Oil-Free bush straight type for universal use in many dry applications such as die/mold, machinery, automation, construction, automobile. The Oil Free bush is self-lubrication and works without grease.

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Types of Oil-Free Bushings

  • Solid polymer bushings are made from high-performance plastic materials, such as PTFE, which has excellent self-lubricating properties. These bushings are lightweight, corrosion-resistant, and can operate in a wide temperature range.
  • Sintered bronze bushings are made from porous bronze material, which is impregnated with lubricant during the manufacturing process. The lubricant is released slowly during operation, providing a low-friction surface for the mating parts.
  • Metal-Polymer Composite Bushings: made by combining a metal backing with a polymer-based self-lubricating layer.
  • Bi-Metal Bushings: consist of two layers: a steel backing and a self-lubricating layer made from materials like aluminum or bronze.
Metal Bushing

Oil-Free Bearing – Oilless Self-Lubricating Tech

Oil-free plain bearing. It can replace rolling bearings and copper alloy bearings in high-pressure, high-temperature, and high-accuracy applications. Structure: High strength casting bronze embedded with solid lubricants.Features: Cost-effective; Adaptable; Wear-resistant; Obvious advantages when used under high-load and oil-free conditions; Solve special needs in environments that generally cannot be met by copper bushings.

Factory highlights: Produce with high-end equipment; Use digital application technology; High product accuracy; Small geometric tolerance; International-level solid lubrication performance.

Pivot Bearing
oil free bearing
oil-free bushings, self lubricating bushings

Application For Graphite Plugged Bronze Bushing

Oil-free bushings are versatile and can be used in a wide range of industries due to their self-lubricating properties, low friction, and maintenance-free operation. Here are some common applications of oil-free bushings:

Used on consecutive casting and rolling machines,mine-exploiting equipment, ships, steam engine, injection molders, auto molds,anti-abrasion, and anti-erosion parts, light industrial machines, tools, moving belt in the drying machine, the door of the fireplace, for instance, on no oil parts on the building, metallurgy and transportation machines, machine tools, agricultural machinery, crane electromotor, spring pin, steering shaft, and transmission, etc

Phosphor Bronze Bush

oil free bushing

Oil Free Bushing Material – metal alloy

When it comes to oil-free bushing materials in metal alloys, there are several options available, each with specific characteristics suited for different applications. Here are some common oil-free metal alloy bushing materials:

Bronze-based Bushings: Bronze alloys, such as CuSn5Zn5Pb5 or CuSn12, are often used to create oil-free bushings. These alloys have excellent wear resistance and can handle high loads. Graphite or other solid lubricants may be incorporated into the bronze material to enhance its self-lubricating properties.

Aluminum-based Bushings: Aluminum alloys are lightweight and corrosion-resistant, making them suitable for applications where weight reduction and resistance to harsh environments are crucial. Aluminum-based bushings can also be designed to be self-lubricating with the addition of PTFE or other solid lubricants.

Copper-based Bushings: Copper alloys, like bronze, offer good wear resistance and are often used in high-load applications. Copper-based bushings can be combined with solid lubricants to reduce friction and extend their lifespan without the need for oil lubrication.

Iron-based Bushings: Some iron-based alloys, such as sintered iron or iron-graphite, can be used as oil-free bushing materials. These alloys have good strength and wear resistance, and when combined with graphite, they exhibit self-lubricating properties.

Stainless Steel Bushings: While stainless steel is not inherently self-lubricating, it is often used in applications where oil or grease lubrication is not desired due to environmental concerns or high-temperature conditions. In such cases, stainless steel bushings can be paired with PTFE or other coatings to achieve oil-free operation.

It’s important to select the appropriate metal alloy bushing material based on the specific requirements of your application, including load capacity, operating conditions, temperature, and environmental factors. Consulting with us can help you make the best choice for your particular needs.

Oil-free Bushing Size Chart

Coded F7D m6L
Oil-free Bearing50.022
1420 1012151620253035           
1521 101215162025303540          
1622 101215162025303540          
1723   15   3035           
1824 101215162025303540          
26   15 20              
2028 101215162025303540506070       
30    162025303540506070  100    
  1215 2025             
2533  12151620253035405060        
35  121516202530354050607080      
2838     202530 40          
3038  121516202530354050607080      
40  12151620253035405060        
40       30 40          
3242     20 30 40          
3544     2025303540506070       
45     2025303540506070       
3848       30 40          
4050   15 202530354050607080      
   15  253035405060        
4555       3035405060        
56       30354050607080      
60       30354050607080      
5060     20 30354050607080      
62       30354050607080      
65       30 4050607080 100    
70         40506070       
6074       30354050607080 100    
75       30354050607080 100    
6375           607080      
6580         4050607080      
       30354050607080 100    
90          50607080 100    
7590          50607080 100    
95           607080 100    
8096         4050607080 100120   
100         4050607080 100120 140 
100           60 80      
90110       30  5060708090100120   
100120          50607080 100120 140 
          50 7080 100120   
120140            708090100120 140 
145               100120   
130150             80 100 130  
140160               100  140 
150170             80 100   150
160180             80 100   150

Technical Specifications and Cost Analysis of Oilless Bushings

In the world of manufacturing, technical specifications play a crucial role in creating efficient and cost-effective solutions. Oilless bushings, a type of self-lubricating bearing system, have gained popularity for their numerous advantages over traditional lubricated bearings.

Technical Specifications of Oilless Bushings:
Oilless bushings are composed of two key elements: a bronze alloy base material embedded with sintered metal particles like copper or iron, and a graphite coating on top. This unique combination enables these bushings to reduce friction without relying on oil for lubrication. Instead, the interaction between the graphite coating and the metallic particles creates self-lubricating properties.

Under pressure, the graphite coating compresses against the underlying metallic particles, forming small pockets filled with pressurized air. This cushioning effect minimizes wear caused by friction and provides excellent vibration-dampening capabilities. Moreover, the bushings exhibit superior heat dissipation rates, making them ideal for applications involving high temperatures and heavy loads.

Installing and maintaining oilless bushings is straightforward due to the absence of frequent lubrication changes, a common requirement for conventional bearings. Their durability is another key advantage, with us often guaranteeing up to 10 million cycles before replacement becomes necessary, far surpassing the longevity of standard bearings. These advantages have propelled the increasing adoption of oilless bushings in various industrial sectors.

Cost Analysis of Oilless Bushings:
Oilless bushings offer a compelling cost-benefit proposition. The near-zero friction generated by the oil-free lubricant, be it graphite or molybdenum disulfide, makes them ideal for applications where frequent alignment adjustments are necessary. Their low rotational resistance and reduced maintenance needs contribute to lower overall costs compared to traditional bearings.

One of the most significant cost-saving factors is the elimination of external lubrication or grease. This is especially advantageous in applications where regular maintenance services are not easily accessible due to remote locations or challenging terrains. As oilless bushings do not rely on external energy sources, they also contribute to lower energy bills over time, particularly in industrial machines operating under extreme conditions like high speeds, heat, and pressure.

Plain & Self-Lubricating Bearings

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Why Use Oil-Free Bushings?

Graphite plugged bushings are beneficial anytime an application needs ongoing lubrication but also needs to perform for long periods without maintenance. These bearings are self-lubricating, so additional oil and grease are not needed.

Because graphite plugged bearings self-lubricate, money is saved on maintenance and replacement—both in materials and labor costs. Additionally, less downtime is needed to add more lubricant or perform other everyday maintenance tasks. Graphite plugged bushings have better wear resistance than other types of bearings. This is because when graphite plugged bushings are in use, there are very minimal friction thanks to the lubricant film they produce. Friction is what wears parts down and causes them to need eventual replacement, so limiting this is the key to durability.

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Can Oil-Free Bushings Be Used In High-Load Applications?

Yes, oil-free bushings can be used in high-load applications, but it depends on the specific type of bushing and the nature of the load.

Oil-free bushings are designed to operate without the need for external lubrication, which can make them a cost-effective and low-maintenance option for certain applications. They are typically made from self-lubricating materials such as polymers or composites that have a low coefficient of friction and can withstand wear and tear.

However, the load capacity of oil-free bushings can vary depending on the material, design, and operating conditions. Some oil-free bushings may not be suitable for very high loads, especially if they are subjected to frequent or sudden impact or high-speed rotation.

It’s important to consult with our qualified engineer or bushing supplier to determine the best type of bushing for your specific application and load requirements. We can help you select a bushing material and design that can withstand the demands of your application while also providing reliable, low-maintenance performance.

Increased Productivity – Solution for Bushing Problems

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  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


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  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More
  • High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.


    Read More