Metallic Self Lubricating Bushing

Graphite-Embedded Bronze Bushings

High performance | Long term durability | Environmental adaptability

Product Overview:

Graphite-Embedded Bronze Bushings are a high-performance self-lubricating bearing solution designed for harsh working conditions and heavy machinery. The unique embedded graphite structure releases lubricants automatically on the friction surface, reducing wear and extending equipment lifespan. These bushings are ideal for applications where frequent maintenance or lubrication is difficult or impossible.

Engineered for heavy loads, slow speeds, or extreme environmental conditions, our graphite-embedded bushings are widely used in construction machinery, mining equipment, steel metallurgy, aerospace, and other industrial applications.

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Material

Shape/Size

Characteristic

Application

Custom

FAQ

Bushing Material

The combination of high-strength bronze alloys and self-lubricating graphite ensures long-lasting, maintenance-free performance.

Materials & Structure:

We use a variety of high-performance bronze alloys tailored to different operating environments:

High-Strength Brass (CuZn25Al5):

Features: Offers excellent mechanical strength and wear resistance, suitable for high-impact loads and heavy friction conditions.
Applications: Mining equipment, heavy machinery.

Tin Bronze (CuSn10):

Features: Known for its exceptional corrosion resistance and good casting properties, ideal for humid and marine environments.
Applications: Marine engineering, shipbuilding.

Aluminum Bronze (CuAl10Fe5Ni5):

Features: Offers high corrosion resistance and strength, perfect for high-load, high-speed applications in high-temperature or acidic environments.
Applications: Oil drilling equipment, metallurgical machinery.

Lead Bronze (CuPb10Sn10):

Features: Excellent anti-friction and self-lubricating properties, making it ideal for high-temperature, heavy-load applications.
Applications: Power generation equipment, steel rolling mills, engine components.

Material: CuZn25Al6Fe3Mn3

Hardness: HRC55-60

Material: HT250

Hardness: 180-230HB

Material: CuSn6Zn6Pb3

Hardness: 80-120HB

Material: CuZn25A16Fe3Mn3

Hardness: 210-250HB

Material: Steel+CuZn25A16Fe3Mn3

Hardness: 210-250HB

Material Structure:

Graphite-Embedded Bronze Bushings consist of a high-performance bronze alloy base embedded with solid lubricant (graphite). The graphite blocks are precisely embedded into the bronze matrix’s friction surface. As the bearing operates, the graphite releases lubricant, reducing direct metal-to-metal contact, thus lowering wear and friction coefficients. This combination design ensures long-lasting, maintenance-free performance.

Rotation Test

Bearing Size:74x60x50

Mating Shaft:45# HRC42-52

Load:24.5N/mm²

Velocity:0.017m/s

Time: 100h

Temperature:20~25C

Lubrication: Dry

Oscillating Test

Bearing Size:50x40x30

Mating Shaft: 45# HRC42-52

Load: 24.5N/mm²

Velocity: 0.017m/s

Angle: 士45Time:100h

Temperature:20~25°C

Lubrication: Dry,

Technical Specifications:

Operating Temperature: -100°C to 300°C
Max Load Capacity: Up to 250 N/mm²
Friction Coefficient: 0.04-0.20 (depending on operating conditions)
Thermal Expansion Coefficient: 16.5×10⁻⁶/K (suitable for fluctuating temperatures)
Service Life: 2-5 times longer than standard lubricated bearings.

Bushing Size

dF7

Dm6

-0.10
-0.30

+0.028
+0.013

+0.018
+0.007

●

+0.034
+0.016

●

+0.021
+0.008

●

+0.041
+0.020

●

+0.025
+0.009

●

+0.050
+0.025

●

+0.030
+0.011

●

d	D	dE7		Dr6		F	-0.10 -0.30
d	D	dE7		Dr6		F	T0 1-0.1	15	20	25	30	35	40	50	60	80	100
10	14	10	+0.040 +0.025	14	+0.034 +0.023	22	2	●	●
12	18	12	+0.050 +0.032	18	+0.034 +0.023	25	3	●	●
13	19	13		19	+0.041 +0.028	26		●	●
14	20	14		20		27		●	●
15	21	15		21		28		●	●	●	●
16	22	16		22		29		●	●	●	●
20	30	20	+0.061 +0.040	30		40	5	●	●	●	●		●
25	35	25		35	+0.050 +0.034	45			●	●	●	●	●
30	40	30		40		50			●	●	●	●	●	●
32	40	32	+0.075 +0.050	40		50			●			●
35	45	35		45		60			●		●		●	●
40	50	40		50		65			●		●		●	●
45	55	45		55	+0.060 +0.041	70					●		●	●	●
50	60	50		60		75					●		●	●	●
55	65	55	+0.090 +0.060	65		80							●		●
60	75	60		75	+0.062 +0.043	90	7.5						●	●		●
63	75	63		75	+0.062 +0.043	85										●
70	85	70		85	+0.073 +0.051	105								●		●
75	90	75		90		110									●
80	100	80		100		120	10								●	●	●
90	110	90	+0.107 +0.072	110	+0.072 +0.037	130									●	●
100	120	100		120	+0.072 +0.037	150										●	●
120	140	120		140	+0.083 +0.043	170										●	●

Bushing Shape

The different bushing shapes allow bushings to be widely used in various mechanical structure parts, such as the moving parts inside cars or the connecting parts on industrial machinery or other situations where there’s friction and wear that needs to be beaten down.

Cylindrical

Flanged

Thrust Washers

Wear Plates

Special

Bearing Bush

Key Features of JDB Bushing

Self-Lubricating Design:

Embedded graphite blocks provide automatic lubrication during machine operation, eliminating the need for frequent maintenance, especially in hard-to-access areas.

Outstanding Wear Resistance:

The combination of a durable bronze alloy base and embedded graphite significantly enhances wear resistance, ensuring stable performance even in harsh conditions.

Corrosion Resistance:

Depending on the alloy used, graphite-embedded bushings offer excellent resistance to corrosion, making them suitable for use in wet, acidic, or alkaline environments.

High Load-Bearing Capacity:

The bronze alloy base ensures high mechanical strength, capable of handling heavy loads in demanding applications.

Low Friction Coefficient:

The solid graphite lubricant keeps the friction coefficient low (0.04-0.20), reducing operational friction and energy consumption.

Why Choose Our Graphite-Embedded Bronze Bushings?

Custom Solutions: We offer a variety of sizes, shapes, and material combinations to ensure a perfect fit for your equipment and specific operating conditions.
Quality Assurance: Each product undergoes rigorous quality control testing to ensure optimal performance and durability in the toughest industrial applications.
Industry Expertise: With years of experience serving global industries, we understand the unique requirements of industrial machinery and provide reliable solutions that reduce maintenance costs and downtime.

Bushing Applications

JDB Bronze Bushings are ideal for a wide range of industries, including:

- Construction Machinery: Excavators, loaders, bulldozers, and other heavy equipment joints and bearing positions, handling high-impact and heavy load conditions.
- Agricultural Machinery: Tractors, combine harvesters, and other farm equipment exposed to outdoor conditions and dust, ensuring long-term lubrication protection.
- Mining Equipment: Conveyor belts, crushers, and other mining machinery benefit from low-speed, high-load capabilities in abrasive environments.
- Metallurgical Equipment: Rolling mills, industrial furnaces, and steel-making machines operating under high temperatures and pressures.
- Power Generation: Bearings in generators, wind turbines, and other rotating equipment requiring long-term stability.
- Marine & Offshore Engineering: Suitable for operation in marine or high-humidity, corrosive environments.

Combine Harvester

Crane

Bulldozer

Loader

Graders

Automobile

Truck

Tractor

Dump Truck

Excavator

Custom Services and Solutions

Personalized Design Support

Contact our sales team today to learn more about our Graphite-Embedded Bronze Bushing solutions and request a quote. We offer customizations tailored to your specific industry needs, ensuring your equipment runs more efficiently and with minimal maintenance.

Free consultation

Communicate with us to clarify the requirements

Free design

Customize your product according to your needs

Sample making

Confirm the drawings and arrange for sampling

Sample confirmation

Customer confirms sample and arranges production

Finished inspection

Inspect the finished product and arrange for shipment

FaQ

Are you a factory？

Of course, we are a manufacturer that can complete the entire production line from raw materials to finished bushing products.

What bushings do you production?

We mainly produce various self-lubricating bushings. Please refer to our product solutions or contact us for details

What is a bushing?

A bushing is a mechanical component typically used to reduce friction between two parts. It serves as a type of bearing that provides a smooth surface for parts to move against each other, often found in rotating or sliding applications.

What is the general process for manufacturing bushings?

Bushing manufacturing involves several key steps:

Material Selection: Choosing the appropriate material such as bronze, rubber, or plastic, depending on the application.
Forming: Techniques like casting, pressing, or extrusion are used to shape the raw material into a bushing.
Heat Treatment: For metal bushings, heat treatment is applied to increase strength and wear resistance.
Finishing: This step involves precision machining to achieve the required dimensional tolerances and surface finish.
Surface Treatment: A coating may be applied for corrosion resistance or lubrication purposes, such as zinc plating or Teflon coating.

What materials are commonly used in bushing production?

Common materials used in bushings include:

Bronze: Known for its durability and low friction, often used in heavy-duty applications.
Rubber: Used for vibration dampening in automotive and machinery applications.
Nylon/Polymer (like PTFE): Provides self-lubrication and is ideal for low-load, low-friction environments.
Steel: Used for high-load applications, often combined with a softer material like bronze or plastic as the lining.

How are bushing dimensions and tolerances maintained during production?

Precision is key in bushing production. CNC machines are frequently used to ensure that inner and outer diameters, as well as wall thickness, meet strict tolerance levels. Throughout production, measurements are taken using tools like micrometers and calipers, and automated systems can control accuracy to prevent deviations.

What surface treatments are used for bushings?

Bushings often undergo surface treatments to enhance their properties:

Zinc or nickel plating: Protects the metal surface from corrosion.
Teflon (PTFE) coatings: Provide low friction and self-lubricating properties.
Phosphating or black oxide coating: Improve wear resistance and reduce the potential for galling (severe adhesion between surfaces in motion).

What are the challenges in bushing production?

Key challenges include:

Maintaining precision: Ensuring dimensional accuracy across large production runs can be difficult, especially for complex shapes.
Material selection: Using the wrong material could result in failure under stress or environmental conditions.
Surface finish quality: Achieving smooth surface finishes is crucial to reducing friction and wear.

Can bushings be custom-made?

Yes, many manufacturers offer custom bushings based on specific requirements such as dimensions, load-bearing capacity, or environmental conditions. These custom bushings can be made from various materials and are typically used in specialized machinery or equipment.

What environmental factors are considered in bushing production?

Manufacturers consider several environmental aspects:

Material sustainability: Using eco-friendly or recyclable materials.
Waste management: Minimizing production waste and properly handling hazardous materials.
Energy consumption: Optimizing energy use in production processes to reduce carbon footprint.

What is the purpose of a bushing?

The lifespan of a bushing depends on various factors, including the material, load, speed, environment, and maintenance. Proper lubrication and regular inspections can extend the life of bushings significantly.

How can I tell when a bushing needs to be replaced?

Signs that a bushing may need replacement include:

Cracks, splits, or visible damage.
Increased noise, such as squeaking or grinding.
Excessive play or movement in the component where the bushing is installed.
Vibration or instability in the machinery or equipment.

How do I maintain bushings?

Maintenance involves regular inspection and lubrication (if required). Some bushings are self-lubricating, but others may need periodic greasing to reduce wear. Keeping the surrounding area clean from dirt and debris can also extend their lifespan.

What is the difference between a bushing and a bearing?

A bearing typically contains rolling elements (like balls or rollers), while a bushing is a simpler component, usually a sleeve that allows for sliding motion between parts. Bearings are generally used for high-speed, low-friction applications, while bushings are suitable for more straightforward, lower-speed applications with higher friction.

How long do bushings last?

The lifespan of a bushing depends on the material, load, speed, and environmental conditions. In optimal conditions with proper maintenance, bushings can last several years. However, harsh conditions such as heavy loads, extreme temperatures, or lack of lubrication can shorten their lifespan.

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Contact Us for More Information

We not only provide high-quality self-lubricating bushings but also offer comprehensive technical support and after-sales service to ensure your equipment always operates at peak performance. If you have any questions or need a quote, please feel free to contact us at any time.

Tel/Whatsapp： +86 136 4583 4002

Email：myway@mybushing.com