Your Professional Bi-metal Bushing Supplier
Founded in 2011 in Zhengzhou, Henan, our factory specializes in the manufacturing of automotive leaf springs for both aftermarket and OEM customers. We operate three dedicated production lines equipped with environmental protection systems, ensuring stable and compliant production under strict regulatory requirements. Our team consists of more than 150 skilled frontline workers, supported by 15 engineers and technicians and 30 professional office staff. With a well-managed manufacturing facility, standardized processes, and reliable inspection equipment, we focus on consistent quality, traceable production, and long-term cooperation. Our capabilities and disciplined operations enable us to serve international customers with confidence and reliability.
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![Bi-metal Bushing Size:40x30-89 Used On Many Types Of Leaf Spring with Eyes]()
Bi-metal Bushing Size:40x30-89 Used On Many Types Of Leaf Spring with Eyes1. We have many types of Bi-metal Bushings, we also accept special size customized . 2. Common Bi-metal bushings with about 0.1mm- thickness bronze layer.. 3. The thickness of Bi-metal bushings
Why Choose Us
OEM & ODM Customization
Based on customer drawings or technical data, our engineers provide optimized designs aligned with application requirements and practical manufacturing conditions.
Production Market
Our products are distributed through authorized dealers across China and exported to North America, Latin America, the Middle East, and Southeast Asia.
Product Application
Our leaf springs are used in light, medium, and heavy trucks, buses, trailers, and construction vehicles.
Standard Quality & Warranty Support
Standard production control ensures stable quality, with a 6-month warranty from the start of use.
Bi-metal Bushing
A bimetal bushing is a type of bearing composed of two distinct metals bonded together to leverage the strengths of each material. Typically, one metal serves as the bearing substrate while the other forms a wear-resistant layer on the surface. This combination results in a high-quality component that offers enhanced performance in demanding conditions.
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1 |
Size |
O.D.40 x I.D.30 x L 89 |
|
2 |
Painting Colour |
Nature |
|
3 |
Application |
Leaf Spring with eyes |
|
4 |
Material |
Nylon Bi-Metal Rubber Rubber+Metal Bronze |
|
5 |
Packing Way |
Carton Wooden Pallet+Carton |
|
6 |
MOQ |
100 |
Advantages of Bi-metal Bushing
Self-Lubricating Properties: Many bimetallic bushings are impregnated with lubricants (e.g., oil or solid lubricants) during sintering, allowing them to operate effectively without continuous external lubrication—ideal for hard-to-reach or maintenance-sensitive areas.
High Wear Resistance: The combination of a durable outer shell and a resilient inner layer significantly extends service life, even under high-cycle or heavy-load conditions.
Corrosion Resistance: Materials like bronze and copper naturally resist oxidation and chemical degradation, making them suitable for humid, marine, or chemically aggressive environments.
Thermal Expansion Compatibility: The two-metal structure can be engineered to manage differential thermal expansion, reducing the risk of seizing or galling in fluctuating temperature conditions.
Cost-Effective Durability: They offer a longer lifespan than plain steel bushings and are often more affordable than fully lined composite or rolling-element bearings.
Types of Bi-metal Bushing
Steel and Copper-Contactor Bimetallic Bushings
These bushings feature a high-strength steel backing bonded with a conductive copper alloy layer, offering an optimal blend of durability and electrical/thermal conductivity.
Bronze and Steel Bimetallic Bushings
A popular choice in heavy-duty machinery, these bushings combine a robust steel base with a low-friction bronze overlay for enhanced wear resistance and smooth operation.
Iron and Bronze Bimetallic Bushings
Constructed with a strong iron substrate and a bronze working surface, these bushings are designed for applications with significant thermal cycling and mechanical stress.
Copper and Graphite Bimetallic Bushings
These self-lubricating bushings utilize a copper matrix embedded with solid graphite particles, enabling continuous lubrication without external oil or grease.
Applications of Bi-metal Bushing
Construction Machinery
In heavy equipment like excavators, bulldozers, and loaders, bimetal bushings are vital for undercarriage and drive components. They are extensively used in track rollers, idler wheels, and other pivotal connections within the walking mechanisms of construction machinery, where they endure significant shock loads and abrasive conditions .
Automotive Systems
The automotive industry relies on these bushings for their durability and friction-reducing properties. Key applications include engine connecting rods, piston pin bearings, balance shaft bushings, and various chassis components such as balance bridges and leaf spring seats . They perform reliably in high-stress environments, contributing to the vehicle’s longevity and performance.
Agricultural Equipment
For farming machinery like tractors and harvesters that operate in environments filled with dust and moisture, bimetal bushings offer excellent wear resistance and durability . This reduces the frequency of maintenance and ensures longer service life for equipment, which is crucial for agricultural productivity.
Industrial and Hydraulic Applications
These bushings provide dependable performance in hydraulic cylinders, compressors, and various industrial machinery . Their design, which can incorporate lubrication features like oil grooves and indentations, helps ensure smooth operation, reduce friction, and extend equipment life in high-pressure systems.
Common Materials of Bi-metal Bushing
Steel Backing
The base is typically low-carbon steel, chosen for its high strength and ability to withstand substantial loads and shock impacts.
Bronze Alloy Liner
Common lining materials include:
CuPb10Sn10: This leaded tin bronze offers excellent anti-seizure properties, good wear resistance, and corrosion resistance. It’s suitable for medium to high-speed applications with significant impact loads.
CuSn6Zn6Pb3: A general-purpose tin bronze used under moderate loads and sliding speeds, often found in connecting rod bushings and compressor parts.
CuPb24Sn4: Known for high fatigue strength and bearing capacity, though it can be prone to lead segregation.
Operational Conditions of Bi-metal Bushing
High-temperature applications
Bushings with copper- or bronze-based linings can withstand elevated temperatures without degrading.
Corrosive environments
Select bushings with protective plating or corrosion-resistant surface alloys, especially in marine or chemical processing equipment.
Variable thermal cycling
Consider materials with matched thermal expansion coefficients to avoid micro-cracking or delamination.
Sintered Bimetal Bushing: This powder metallurgy process involves sintering bronze alloy powder onto the steel strip at high temperatures (e.g., around 920°C). It forms a porous interface (porosity can be around 15.4%) that can be impregnated with lubricant, enhancing performance.
Cast Bimetal Bushing: Techniques like centrifugal casting are used to create a metallurgical bond between the two layers. While this method can sometimes result in higher porosity and oxidation compared to other methods, it offers good production efficiency and coating thickness.
Maintenance and Lubrication of Bi-metal Bushing
Self-lubricating bushings: These incorporate solid lubricants (e.g., graphite, PTFE, or molybdenum disulfide) embedded in the lining. Ideal for sealed, hard-to-reach, or maintenance-free applications like robotics or aerospace systems.
Externally lubricated bushings: Require periodic oil or grease application to minimize friction and prevent metal-to-metal contact. Common in industrial gearboxes and rotating shafts.
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FAQ
As one of the most professional bi-metal bushing manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy high-grade bi-metal bushing at competitive price from our factory.
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