Bushing Vs Bearing

Bearings are important mechanical components used to support shaft parts and enable relative sliding between bearing surfaces.

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Bronze Bushing
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Bushing Bearing

Difference Between Bushing And Bearing

Bushing and bearing are generally mixed, that is, the bushing also can be called bearing, The general wall thickness is thinner called bush more, and vice versa is called bearing more.

A Bushing

The bushing is used outside the mechanical parts to achieve the role of sealing, wear maintenance, and other supporting parts. The use of bushings is very wide, many parts in the industrial field, such as valves, bearings, and other parts will use bushings.

What Is A Bearing

Bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotary accuracy. According to the different frictional properties of moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings.

Bearings – Composite Materials

What Are The Different Types Of Bushing?

composite bushing

PTFE Composite Bushing

PTFE bushing is a sliding bearing made of steel plate as a substrate, sintered spherical bronze powder in the middle, and rolled with a mixture of PTFE and lead on the surface. It has a small coefficient of friction, good corrosion resistance, and oil-free lubrication. The use of this product can reduce the volume of machinery, avoid the phenomenon of the gnawing shaft and reduce mechanical noise other advantages. A mixture of modified PTFE and lead (Pb) 0.01~0.03mm, a thermally conductive material that forms a transfer film to protect the shaft during operation. Used in sliding parts of various machines such as printing presses, lifts, textile machines, fitness machines, hydraulic trucks, micro motors, solenoid valves, cars, motorbikes, and agricultural and forestry machinery.

1. Polymer Composite Bearing Bushings

These materials consist of metal backing bonded to a porous bronze sintered layer with PTFE or POM based polymer bearing layer. The metal backing provides mechanical strength, while the bronze sinter layer provides a strong mechanical bonding between the backing and the bearing lining, the PTFE or POM based polymer offers exceptionally low friction even under dry conditions and the thermoplastic-based polymer is generally designed to operate with marginal lubrication.

POM Composite Bushing

POM bushings are Based on a steel plate with sintered spherical bronze powder in the middle and rolled modified POM on the surface, and contain oil storage pits. It is suitable for use under normal temperature conditions, in low-speed and medium load locations, replacing the traditional bronze bushing, both reducing costs and extending service life. In special cases, it is used on rolling mills and saves refueling frequency, and simplifies replacement procedures. The product has been widely used in automotive chassis, forging machine tools, cure mining machinery, engineering machinery, hydropower, rolling steel industry, and other fields.

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Bushing Vs Bearing, excavator oilless bearing

Bushing Vs Bearing – Metal Bearings Material

Bronze Bushing

Bronze bearings are suitable for low-speed and heavy-load applications where the shaft and bearing alignment is good, They can be made from a variety of alloy components to obtain a variety of physical properties. Bronze bushing materials include C86300 (CuZn24Al6Fe3Mn4) Manganese Bronze, C95400 (CuAl11Fe4) Aluminum Bronze, C93200 (SAE 660) Bearing Bronze, and more, learn more detail about bronze bushing bearing material now!

Cast Iron Bearing

Cast iron-bearing materials are widely used in less demanding applications. The hardness of the journal must be higher than the hardness of the shaft shank.

Sintered Bronze Bushing

The so-called “self-lubricating” “porous” bearings or sintered bronze bushings are made by first sintering metal powder and then dipping it in oil.

Graphite Bushing

Graphite bushing is a sliding bearing using copper alloy as the base, inlaid with graphite as a solid lubricant, with high load bearing, low friction coefficient, high wear resistance, low wear, and lubricated without oil. They are widely used in metallurgical continuous casting machines, steel rolling equipment, mining machinery, steam turbines, injection molding machines, oven rollers, light industry machinery, machine tool industry, and equipment production lines.

Bushing Vs Bearing, How To Select Copper Bushings?

The use of copper bushings is very common, but the material of different bearings, the function, and characteristics are different, how to select the right copper bushings, please see the following:

  • aluminum bronze has high strength, high fineness, and stable chemical function. Commonly used in valve bodies, worm gears, nuts, pipe fittings, etc.
  • Tin-phosphorus bronze, hardness and wear resistance are very high, can be used to make heavy loads, high speed, and higher temperature operation, subject to violent conflict parts, such as connecting rod bushings, gears, worm gears, etc.

To choose the right copper bushing, it is necessary to consider the purpose of its use and choose different types of bushings for different working conditions.

Bushing Vs Bearing

Bushing VS Bearing – China Manufacturer

The main conditions considered in bushing selection are the pressure, speed, pressure-velocity product, and the nature of the load that the bushing needs to withstand. In addition, whether the bushing is lubricated or not, the state of lubrication also determines its effectiveness and life.

bushing vs bearing

Solid Bronze Bushing Design

Solid bronze bushing is a composite of metal base material and solid lubricant. Using the complementary performance of the two materials, it can realize self-lubrication under the harsh special conditions of high temperature, low speed, and heavy load. Its design features are:

  • Selection and pairing of substrate material and solid lubricant.

  • Determination of load bearing and bearing width.

  • Selection of thickness and fit clearance

  • The area occupied by solid lubricant and arrangement, etc.

Bushings and Bearings – Applications and Industries

Plain bearings that rely on self-lubrication are theoretically capable of operating indefinitely, they are used in very critical applications if bearing failure can have serious consequences. Examples include steam turbines in power plants, engines in automobile manufacturing, etc. Sliding bearings are also often used in low-speed shaft applications, such as ship propeller shafts.

Oil-Impregnated Sintered Bronze And Solid Bronze Bushing

They range from oil-impregnated sintered bronze to designs capable of using embedded solid lubricants. The latter are often used in harsh environments such as agricultural machinery and construction machinery. Sliding bearings are often cast in bronze or pressed with metal powder and impregnated with an oil to provide film lubrication.

self lube bushings, CNC BRONZE PARTS

Choose Bushing You Need According To The Shape

According to shapes, there are four main types of bushings. Our ability to design and custom bronze bushing solutions, and our responsiveness, flexibility, and willingness to tackle customers’ tough application challenges – from very practical to highly-complex applications – are what sets us apart.

As the name suggests, the cylindrical bronze bushings are cylindrical in shape and are available in metric and inch sizes to produce standard and custom parts to suit your requirements. It is ideal for one-way variable loads, rotary movements, and axially guided bearings.

Cylindrical Bronze Bushing

Flanged bushings are almost identical to cylindrical bronze bushings with one distinct difference, they have a flange on one end. Flanges are interconnecting parts between shafts and shafts, and are used for connections between pipe ends; they are also used for connections between two pieces of equipment, by flanges on the inlet and outlet of the equipment.


Bronze Flanged bushing has good comprehensive performance, so it is widely used in the chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire-fighting, electric power, aerospace, shipbuilding, and other basic engineering.

Bronze Flanged Bushing

Thrust washer bearings and other load-bearing components are key components in the performance of power transmission systems. They are essentially flat washers that sit between a fixed component and a rolling surface, supporting axial loads or movements on the shaft from one side to the other and restricting any movement along the shaft. bronze thrust washers are required to withstand extreme temperatures while reducing the effect of friction on the overall system.

Thrust Washer Bearing

Bronze Wear plates are a common component used in tool and mold making. They are low-maintenance and wear-resistant as well as self-lubricating. Bronzeoilless.com wear plates are widely used as brass fittings in large machinery such as cone machines, paper machinery, and equipment, and are popular in the automotive, mechanical engineering, lifting, welding technology, injection molding machines, and conveying technology industries.

Bronze Wear Plate

Bushing VS Bearing, Select Your Parts