PTFE Plugged Bronze SPBL Oilless Bushings, Bronze bush with PTFE plugs

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.

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 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

■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:

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.