Oilless Bushing PTFE Plugged Bronze Bushings SPBL

Oilless Bushing PTFE Plugged Bronze Bushings SPBL

Say goodbye to the hassle of frequent lubrication maintenance. Our self-lubricating technology ensures smooth operation and reduces wear and tear, extending the lifespan of your equipment. Experience uninterrupted productivity and cost savings as you bid farewell to the need for messy lubricants and time-consuming upkeep.

Oilless Bushing PTFE Plugged Bronze Bushings SPBL

The SPBL oilless bushing is engineered as a self-lubricating unit tailored for applications subjected to high loads and operating at low speeds. This bushing is crafted from a robust copper alloy, incorporating solid lubricants like PTFE (Polytetrafluoroethylene) and MOS2 directly into its structure. Designed for operations where maintenance is impractical or for heavy-duty tasks, these bushings stand out for their superior wear resistance and capacity to endure significant loads. Available in a diverse array of configurations, including cylindrical and flanged bushes, thrust washers, sliding plates, pintle bearings, half-bearings, as well as axial and radial segment rings, and self-aligning spherical bearings. The integration of solid lubricant plugs within these bushings dispenses with the need for external lubrication, rendering them perfectly suited for use in environments where maintenance is difficult or impossible, like underwater or in high-temperature conditions. SPBL bushings are offered in standard sizes, ensuring dependable and effective performance across a wide range of applications.

Oilless Bushing PTFE Plugged Bronze Bushings are a type of maintenance-free bearing designed for heavy-duty applications, offering excellent performance under high loads and intermittent operation. These bronze bearings are made from cast bronze and are often used in turbine engineering and manufacturing.

One key feature of these bushings is the incorporation of solid lubricant plugs, typically made of PTFE (Polytetrafluoroethylene). This design eliminates the need for additional lubrication, making them a suitable choice for applications where maintenance may be challenging or not possible.

For applications with temperatures above 250°C, oilless bushings with graphite inserts are also available, providing reliable performance in high-temperature environments.

A variety of bearing forms can be made to order, including cylindrical bushes, flanged bushes, thrust washers, sliding plates, pintle bearings, half-bearings, axial and radial segment rings, self-aligning spherical bearings, and customized bearing designs.

The structure of these high-strength brass bearings with embedded solid lubricant can be broken down into three main components:

  1. Bronze backing – This provides the overall structure and support for the bearing.
  2. Solid lubricant plug (PTFE) – These plugs are embedded within the bronze backing and release lubricant during operation, reducing friction and wear.
  3. Solid lubricant film – As the bearing operates, a thin film of lubricant forms on the surface, further minimizing friction and ensuring smooth operation.

Selecting, configuring, and ordering oilless bushing PTFE plugged bronze bushings is simple. With punctual delivery and fair prices, these bearings offer a reliable and efficient solution for a wide range of heavy-duty applications.

The greases have to be free of Additives like MoS2 (molybdenum disulfide)

MoS2 BUSHING, oilless bushing custom size with material ASTM C86300 or equal to CuZn25Al5Mn4Fe3-C +Graphite (WHITE)

Advanced CNC Machinists

Bronze bushings with PTFE (Polytetrafluoroethylene) plugs are a type of self-lubricating bearing designed to provide low friction and a long service life. They are used in a wide range of applications, including automotive, aerospace, marine, and industrial machinery.

These bushings are made from bronze, a metal alloy composed primarily of copper and tin. The bronze provides excellent strength, wear resistance, and corrosion resistance, making it an ideal material for bushings in various environments.

PTFE plugs are embedded into the bronze bushing’s surface, creating a self-lubricating system. PTFE, commonly known Polytetrafluoroethylene, is a high-performance plastic known for its low friction, non-stick properties, and resistance to chemicals and extreme temperatures. As the bushing wears, the PTFE plugs release lubricant, maintaining a low friction surface and prolonging the life of the bushing.

Hexagonal Boron Nitride, often referred to as “white graphite” due to its similar layered structure to graphite. This material exhibits excellent lubrication properties, electrical insulation, thermal conductivity, and resistance to chemical corrosion. It also can absorb neutrons. Chemically stable, hexagonal boron nitride is inert to all molten metals, making its formed products easy to machine and highly resistant to moisture. Its melting point under nitrogen pressure is 3000°C, and it sublimates at 2500°C under atmospheric pressure. The theoretical density of hexagonal boron nitride is 2.29 grams per cubic centimeter. It has a Mohs hardness of 2, can resist oxidation at temperatures up to 900°C, and can withstand high temperatures up to 2000°C in nitrogen and argon atmospheres. The melting point in these conditions is 3000°C. As a chemically inert material, hexagonal boron nitride remains stable up to 2700°C in an argon atmosphere. The hashtags suggest the article might also discuss applications in graphite copper sleeves, brass, high-strength brass, and oil-free bearings.

Hexagonal Boron Nitride  has a molecular formula of BN. In its hexagonal form, it forms a layered structure similar to that of graphite, where nitrogen and boron atoms are alternately bonded in a hexagonal mesh. This structure contributes to its unique properties like high thermal conductivity, electrical insulation, and lubrication.

Advantages of bronze bushings with PTFE plugs include:

  1. Self-lubricating: The PTFE plugs provide constant lubrication, reducing the need for external lubricants and maintenance.
  2. Low friction: PTFE has a very low coefficient of friction, which minimizes wear and improves efficiency in moving parts.
  3. High load capacity: Bronze is a strong material that can handle heavy loads, making these bushings suitable for high-load applications.
  4. Corrosion resistance: Bronze and PTFE are both resistant to corrosion, ensuring the bushing’s longevity in harsh environments.
  5. Wide temperature range: Both materials can withstand a broad range of temperatures, making them suitable for various applications.

Bronze bushings with PTFE plugs are a reliable and low-maintenance solution for a wide variety of applications requiring smooth movement and reduced friction.

PTFE-plugged bronze bushings are a type of self-lubricating bushing used in various applications, particularly in the mechanical and automotive industries.

These bushings are made of a bronze substrate, which is a strong and wear-resistant material. The bronze substrate is typically made of a mixture of copper and tin, and sometimes other elements such as zinc or lead. The bronze substrate provides strength and durability to the bushing.

The PTFE (polytetrafluoroethylene) plug is embedded within the bronze substrate, providing self-lubricating properties to the bushing. PTFE is a synthetic fluoropolymer known for its low friction coefficient, high chemical resistance, and excellent temperature stability. The PTFE plug acts as a solid lubricant, reducing friction and wear between the shaft and the bushing.

The PTFE plug is evenly distributed throughout the bronze substrate, forming a thin film on the surface of the bushing. This film provides a low-friction surface that requires no additional lubrication. The self-lubricating properties of the PTFE-plugged bronze bushings make them ideal for use in applications where frequent maintenance or lubrication is not possible or practical.

PTFE-plugged bronze bushings are commonly used in automotive suspension systems, agricultural machinery, and various industrial applications. They offer excellent wear resistance, corrosion resistance, and a longer lifespan than traditional bushings.

we can manufacture various shapes and sizes of cast bronze bearings with PTFE plugs.  From plain sleeve bearings to flanged bearings even wear plates, PTFE plugs can help extend the service life of bronze products for specific environments.  For more information on how PTFE-plugged bronze components can help your project, contact us today.

PTFE Plugged Bronze Bushings

What are Oilless Bushings?

As the name suggests, oilless bushings do not require external lubrication to function. These bearings are designed to eliminate the need for constant maintenance and are especially useful in applications where regular lubrication is impractical or impossible. Their oilless nature also makes them an environmentally friendly choice as it reduces the reliance on oil-based lubricants.

CuZn25Al5: The Backbone of High-Performance Bushings

CuZn25Al5 represents a particular type of high-strength brass alloy, composed primarily of copper (Cu), zinc (Zn), and aluminum (Al). The ’25’ and ‘5’ in CuZn25Al5 represent the percentage composition of zinc and aluminum respectively. This alloy is known for its high load-carrying capacity, excellent wear resistance, and impressive durability. It is corrosion-resistant and is capable of withstanding a wide range of temperatures, making it an ideal material for bushings used in harsh or demanding environments.

White PTFE Plugs: The Lubrication Game Changer

White PTFE-plugged bronze bushings are a type of self-lubricating bearing material that combines the high load capacity and dimensional stability of bronze with the low friction and self-lubricating properties of polytetrafluoroethylene<span class=”animate-in fade-in-25 duration-700″> (PTFE). These bushings are designed for applications where maintenance is difficult and where conventional lubricants cannot be used. The structure typically involves a bronze base material with plugs of PTFE embedded into the surface. Here’s a detailed look at their features and applications:

While the CuZn25Al5 alloy provides the strength and resilience necessary for the bushing, it’s the white PTFE (polytetrafluoroethylene) plugs that make these bushings truly self-lubricating.

PTFE is a high-performance plastic known for its extremely low friction coefficient, excellent temperature resistance, and chemical inertness. When used as a lubricant in the form of plugs inserted into the bushing, it provides consistent, reliable lubrication throughout the lifetime of the bushing.

The lubricating properties of PTFE are activated under the heat and pressure of operation, ensuring the bearing surfaces remain lubricated even during long periods of operation. This results in a reduction of both friction and wear, ultimately increasing the longevity of the machinery in which the bushings are used.

The Benefits of Oilless CuZn25Al5 Bushings with White PTFE Plugs

Maintenance-Free Operation: These bushings eliminate the need for regular lubrication, reducing the time and resources spent on maintenance.

Superior Performance: With the combination of CuZn25Al5’s strength and PTFE’s low-friction properties, these bushings provide excellent performance in a wide range of applications.

Durability and Longevity: The corrosion resistance and wear-resistant properties of CuZn25Al5, coupled with the lubricating ability of PTFE plugs, ensure these bushings last longer, saving replacement costs in the long run.

Eco-Friendly: By eliminating the need for oil-based lubricants, these oilless bushings are a more environmentally sustainable choice.

In Conclusion

In the quest for improving machinery performance and durability, the use of oilless CuZn25Al5 bushings with white PTFE plugs represents a significant advancement. By combining the high-strength and corrosion-resistant properties of the CuZn25Al5 alloy with the self-lubricating properties of PTFE, these bushings provide an excellent, maintenance-free solution that can stand up to the demands of a wide variety of industrial applications.

Manufacturer and supplier of Bronze and Copper Alloy Based Products. self-lubricant plug material in cast bronze bushings and wear plates.

Cast Bronze Bushings with Solid Lubricant Inserts, with graphite inserts – viiplus.com

BRONZE FLANGE GUIDE BUSHING WITH SOLID LUBRICANT INSERTS

SELF-LUBRICATING PARTS

The Division structure is a natural evolution of decades of technical experience gained in the field of “mold guide and slide forming” (both injection and die casting) to commercial activity, as well as further specialization in the field of “self-lubricating graphite bushings”.

A young and very dynamic company, at the beginning of its existence it was equipped with a fully automated warehouse, combined with a new management system, specially developed for the specific needs of its target sectors.
The main goal of our company is to be the commercial and technical partner of our customers, guaranteeing the highest level of professionalism and high-quality standards. All items handled, whether standard or special, are made of the best self-lubricating bearing materials and are subjected to relevant quality tests.

MATERIAL: Bronze Graphite, guide bush material

USE: Guide bush with central collar (for centering between two plates), bronze with non-liquid lubricant; the material for self-lubricating reduces maintenance requirements.

Cast bronze bushings with solid lubricant inserts. Maintenance-free bearing material for heavy-duty applications • Excellent performance under high loads and intermittent operation • Also available with graphite inserts for temperatures above 250°C…

Oiless Bushing (In Water) SPBL material is made with high-strength copper alloy, and the inserted solid lubricant materials are made with PTFE and MOS2.

Lowest in friction and the good of water lubrication, Temp. limit 300℃.

Applications are particularly suitable for water and seawater environments, such as ships, hydraulic turbines, gas turbines, etc.

Cast bronze bushings with solid lubricant inserts

Solid Lubricant bearings are available in 3 standard bronze alloys:

  • C86300 Brass with graphite inserts:: Standard material fulfills most application requirements
  • C93200 bronze with graphite inserts
  • C95400 with graphite inserts: Highest load capacity

COMPOSITION

Cast Bronze Bearings with Solid Lubricant Inserts

PTFE has a wide range of commercial applications. One such use is as a self-lubricating plug material for cast bronze bushings and wear plates. PTFE is a white solid at room temperature. This solid lubricant plug can be used in bronze bearings because it has many favorable properties. These properties include

Ultra-low coefficient of friction (one of the unbeatable coefficients of friction of any solid material)Corrosion resistance in wet, dirty environments (PTFE is non-reactive, due in part to the strength of the carbon-fluorine bond. (This makes it unaffected by reactive and corrosive chemicals)Able to be exposed to seawater and marine environmental to remain solid over a wide temperature range (-450°F to + 620°F)

WHAT IS POLYTETRAFLUOROETHYLENE

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene. It is a high-performance plastic material known for its excellent chemical resistance, low friction coefficient, and high-temperature stability. PTFE is widely used in various industries, including aerospace, automotive, medical, and food processing, among others.

PTFE has a unique molecular structure that gives it its unique properties. It comprises a long chain of carbon and fluorine atoms that form a highly stable and non-reactive structure. The carbon-fluorine bond is one of the strongest bonds in organic chemistry, making PTFE highly resistant to chemical attack and thermal degradation.

PTFE has a low coefficient of friction, which means it has excellent lubricating properties. It also has a high resistance to heat and can withstand temperatures up to 260°C (500°F) without degradation. In addition, PTFE is non-stick, non-toxic, and non-reactive with most chemicals, making it an ideal material for applications that require high performance and chemical resistance.

Some common applications of PTFE include coatings for cookware, gaskets, seals, bearings, and electrical insulation. PTFE can also be blended with other materials to improve their properties, such as in the case of PTFE-plugged bronze bearings, where the PTFE acts as a solid lubricant to reduce friction and improve wear resistance.

Cast Bronze Bearing Material with Solid Lubricant Inserts

Metal and Bronze Bushing – Maintenance-free Bearing Solutions

CHARACTERISTICS
Maintenance-free bearing material for heavy-duty applications
Excellent performance under high loads and intermittent operation
Also available with graphite inserts for temperatures above 250°C

AVAILABILITY
Custom bearing shapes: cylindrical rings, flanged rings, thrust washers, slide plates, pivot bearings, half bearings, axial and radial segmented rings, self-aligning spherical plain bearings, custom bearing designs

Feature

■Usable in water
■ Serviceable without the need for lubrication. Demonstrates high performance under high-load and low-speed operations.
■ Demonstrates superior wear resistance in applications where oil film is seldom produced such as reciprocating motions, oscillation, frequent starts, and stops, etc.
■ Superior chemical resistance and corrosion resistance.
■ Standard products are available.

PTFE plugged bronze bearings application

PTFE-plugged bronze bearings are widely used in various industries and applications due to their self-lubricating properties, wear resistance, and durability. Here are some common applications of PTFE-plugged bronze bearings:

  1. Automotive industry: PTFE-plugged bronze bearings are commonly used in suspension systems, engine components, and steering systems. They provide excellent wear resistance and can operate without additional lubrication, reducing the need for maintenance and improving the lifespan of the component.
  2. Agricultural machinery: PTFE-plugged bronze bearings are used in farm machinery, such as tractors and combines, due to their high load-carrying capacity and resistance to harsh environments. They can operate in dusty, wet, and corrosive conditions, reducing maintenance needs and improving efficiency.
  3. Marine industry: PTFE-plugged bronze bearings are used in marine applications, such as propeller shafts and rudders, due to their corrosion resistance and self-lubricating properties. They can operate in saltwater environments without the need for additional lubrication, reducing maintenance needs and improving durability.
  4. Industrial machinery: PTFE-plugged bronze bearings are used in various industrial applications, such as pumps, conveyors, and processing equipment. They can operate in high-speed and high-load conditions, reducing friction and improving efficiency.
  5. Aerospace industry: PTFE-plugged bronze bearings are used in aircraft landing gears, hydraulic systems, and engine components due to their high load-carrying capacity, wear resistance, and self-lubricating properties. They can operate in extreme temperature conditions and reduce the need for maintenance, improving the reliability of the aircraft.
  6. Hydraulic Turbines
  7. Ship Propellers
  8. Boatyard Equipment
  9. Shore Platform Equipment
  10. Gas Turbines
  11. Hydropower Machinery

Bronze bushings  tolerance

Bronze bushings with for example type in the bore after insertion of the tolerance range F7 to a tolerance range H7. Prerequisites for this are:

  • H7            (the tolerance of the housing bore)
  • a corresponding wall thickness of the housing
  • the control of the best wall strength of the socket

From the experience of the most diverse use cases, the following tolerance fields should be used when against run partner preferred:

  • h6            (for the highest precision in cutting tool/mold construction)
  • f7, e7       (for the highest accuracy in general engineering)
  • d8, e8      (for heavy loads in heavy machinery)
  • e8 + D9   (for extreme cases in plant construction/furnace operation / offshore)

PTFE-plugged bronze bearings are used in various industries and applications due to their self-lubricating properties, wear resistance, and durability. They can reduce maintenance needs and improve the lifespan and efficiency of the components, making them an ideal choice for demanding environments and applications.

OILES 500SP1-SL4 Bushings I.D.: Φd O.D.: ΦD Length: L
SPBL-121820 12 18 20
SPBL-152120 15 21 20
SPBL-162220 16 22 20
SPBL-162230 16 22 30
SPBL-182420 18 24 20
SPBL-203020 20 30 20
SPBL-203030 20 30 30
SPBL-203040 20 30 40
SPBL-253520 25 35 20
SPBL-253525 25 35 25
SPBL-253530 25 35 30
SPBL-253540 25 35 40
SPBL-253550 25 35 50
SPBL-304020 30 40 20
SPBL-304025 30 40 25
SPBL-304030 30 40 30
SPBL-304040 30 40 40
SPBL-304050 30 40 50
SPBL-354520 35 45 20
SPBL-354530 35 45 30
SPBL-354535 35 45 35
SPBL-354540 35 45 40
SPBL-354550 35 45 50
SPBL-354560 35 45 60
SPBL-405030 40 50 30
SPBL-405040 40 50 40
SPBL-405050 40 50 50
SPBL-405060 40 50 60
SPBL-405540 40 55 40
SPBL-405550 40 55 50
SPBL-405560 40 55 60
SPBL-456030 45 60 30
SPBL-456050 45 60 50
SPBL-456060 45 60 60
SPBL-506040 50 60 40
SPBL-506050 50 60 50
SPBL-506060 50 60 60
SPBL-506540 50 65 40
SPBL-506550 50 65 50
SPBL-506560 50 65 60
SPBL-506570 50 65 70
SPBL-557040 55 70 40
SPBL-557060 55 70 60
SPBL-557070 55 70 70
SPBL-607550 60 75 50
SPBL-607560 60 75 60
SPBL-607570 60 75 70
SPBL-607580 60 75 80
SPBL-658060 65 80 60
SPBL-658070 65 80 70
SPBL-658080 65 80 80
SPBL-709060 70 90 60
SPBL-709070 70 90 70
SPBL-709080 70 90 80
SPBL-709090 70 90 90
SPBL-7090100 70 90 100
SPBL-759570 75 95 70
SPBL-7595100 75 95 100
SPBL-8010060 80 100 60
SPBL-8010080 80 100 80
SPBL-8010090 80 100 90
SPBL-80100100 80 100 100
SPBL-80100110 80 100 110
SPBL-9011060 90 110 60
SPBL-9011080 90 110 80
SPBL-9011090 90 110 90
SPBL-90110100 90 110 100
SPBL-10012060 100 120 60
SPBL-10012080 100 120 80
SPBL-100120100 100 120 100
SPBL-100120120 100 120 120
SPBL-110130100 110 130 100
SPBL-110130110 110 130 110
SPBL-12014080 120 140 80
SPBL-120140100 120 140 100
SPBL-120140120 120 140 120
SPBL-130150100 130 150 100
SPBL-130150130 130 150 130
SPBL-130150150 130 150 150
SPBL-140160100 140 160 100
SPBL-140160140 140 160 140
SPBL-150170100 150 170 100
SPBL-150170150 150 170 150
SPBL-160180100 160 180 100
SPBL-160180150 160 180 150
SPBL-170190100 170 190 100
SPBL-170190150 170 190 150
SPBL-180200100 180 200 100
SPBL-180200150 180 200 150
SPBL-190210100 190 210 100
SPBL-190210150 190 210 150
SPBL-200230150 200 230 150
SPBL-200230200 200 230 200

Cast Bronze Bushings with Solid Lubricant Advantage

Chemical resistance
Suitable for continuous sliding rotation
Suitable for continuous sliding, rotating and oscillating movement
Replace roller bearing
Quality and Reliability
Together with One-Piece Compact Design
Increased wear resistance
dry operation
dimensional stability

white PTFE plugged bronze bushings offer a robust solution for applications requiring low friction, high load capacity, and minimal maintenance. Their unique combination of materials provides a versatile bearing solution across a wide range of industries.

Your expert in self-lubricating Bearing

and Bronze alloys – serving globally