Rocker Arm Bushing Bimetal Bearing Bushes are specialized components designed to provide smooth and reliable operation in rocker arm mechanisms. These bushings are constructed from bimetal materials, which consist of two different metals joined tog to create a unique combination of properties.

The bimetal design offers several advantages. The outer layer, often made of a harder metal, provides excellent wear resistance and durability, ensuring a long service life for the bushing. The inner layer, typically made of a softer metal, offers improved lubrication and reduces friction, enhancing the overall performance of the rocker arm mechanism.

Rocker arm bushings play a crucial role in the smooth operation of internal combustion engines and other mechanical systems. They support and guide the rocker arm as it moves, reducing wear on the mating surfaces and minimizing friction losses. This helps maintain efficient power transmission and reduces the risk of mechanical failure.

The precision manufacturing of rocker arm bushings ensures a snug fit within the rocker arm mechanism. This tight fit helps prevent vibrations and misalignment, further enhancing the reliability and performance of the system.

In summary, Rocker Arm Bushing Bimetal Bearing Bushes are high-performance components designed to provide smooth and durable operation in rocker arm mechanisms. Their unique bimetal design offers a combination of wear resistance, lubrication, and precision fit, making them an essential part of any mechanical system that relies on efficient power transmission.

Rocker Arm Bushing

We are the professional Rocker arm bush producers. Our products perform well under high load conditions. Our bushings maintain tight dimensional tolerances, have an excellent surface finish, are machine-friendly, and have a tapered wire at each end for easy installation.

Rocker Arm Bushing

Two available Materials:

Copper Lead

· High-quality general polish

· Minimal relief between bearing layer and steel backing to facilitate the assessment of the bond integrity.

· Fully developed and polished islands of Lead to ensure consistency of comparative analysis with standards.

Aluminium Tin

· High-quality general polish.

· Minimal relief between bearing layer, intermediate foil, and steel backing in order to facilitate the assessment of

the bond integrity.

· Also to ensure consistent comparative analysis of type, size, and distribution of different

phases present in the range of alloys.

Find here online price details of bimetal bushings which are produced from bimetallic strips with sintered copper-lead-bronze coating and steel as support material.The steel back provides extra strength, while the sintered bronze coating provides a bearing surface which results in reduced friction and wear. Bimetal bushings are widely used for applications with vibrating loads, impacts and friction area.

Types of Oil Pockets for bimetal bushings

Sintered Bimetal Bearings SAE799 Layer + Steel Backed Bushings + Copper Plating / Tin-Plating

Bimetal bearing is a steel-backed bushing plate as the matrix, the surface of sintered CuPb24Sn4 alloy material products. The bimetal bushings have good anti-fatigue strength and bearing capacity. Suitable for medium speed medium load. There are occasions for oil sliding. When the surface is plated with soft alloy, it can be used as bearing and connecting rod bushing for the high-speed internal combustion engines to achieve good wear resistance and fatigue resistance.

Technical parameters

Thickness tolerance between inner hole machining and non-machining for bimetal bearings

Bimetallic boundary lubricated bearings, engine bearings

Manufacturer of Self Lubricating Bushing - Self Lubricating Graphite Bush, Self Lubricating Bimetal Bushings

We take quality as the core value of the enterprise.

Bimetal Bearing Material

Bimetal composite bearings with high-quality low carbon steel as substrate, the surface of the sinter with low friction properties of copper alloy CuPb24Sn4 as wear-resisting layer of bearing.

Bimetal Bearing Raw material to produce

Bimetal Bearing Design

We can design bimetal bearings according to the operating conditions of copper alloy surface processing of various types of oil tank, oil hole, hole, etc., in order to suit cannot continue to go hard or go occasion. Good bonding strength and optimum bearing capacity can be obtained by secondary sintering and secondary extrusion.

Types of Oil Pockets for bimetal bushings

1.Oil Holes Form

2.Diamond Form

3.Smooth (No Oil Pocket)

Types of Oil Grooves for bimetal bushings

Types of Butt Jionts for bimetal bushings (Slit & Clinch)

Bimetal Bearings Bushings Buckle Form

The Bimetal Bearings Bushing Solution

For every industry in the world
High quality self - lubricating products are available at the same time
Professional solutions Bimetal Bearing constantly improve the quality of

products and services, to meet the challenges of The Times!

The Bimetal Bearings Bushing Solution

Bimetal Bearings Design

Manufacture based on clients’ drawings

Integrated production

International service experience

Viiplus product advantages

High quality products Size detection Design reference standard Global reach On time delivery Multiple packaging

The mode of transportation

Beyond Grease: A Deep Dive into Oilless Bushings & Why Viiplus Leads the Way

Friction is the enemy of efficiency. In countless machines, from massive industrial equipment to intricate automotive components, the constant battle against wear and tear dictates performance, longevity, and maintenance costs. Traditionally, grease and oil have been the go-to solutions, but they come with their own set of challenges: frequent re-lubrication, potential contamination, environmental concerns, and limitations in extreme conditions.

Enter the world of oilless bushings, also known as self-lubricating bearings or sliding bearings. These innovative components offer a smarter way to manage friction, delivering reliable movement without the need for external lubrication.

At Viiplus (www.viiplus.com), we don't just supply these components; we engineer solutions. Leveraging deep expertise in metallurgy and tribology (the science of friction, wear, and lubrication), we've become a leading name in sliding bearing technology. But what exactly are oilless bushings, and why should they be on your radar? Let's dive deeper.

What Exactly Are Oilless Bushings? The Science of Self-Lubrication

Unlike traditional ball or roller bearings that rely on rolling elements and require constant lubrication films, oilless bushings operate on the principle of sliding motion. Their "magic" lies in their material composition and structure, designed to provide their own lubrication at the bearing surface. This can be achieved through several key technologies:

1. Solid Lubricants Embedded: Materials like graphite, MoS₂, or PTFE are embedded directly into the metallic matrix (often bronze) of the bushing. As the shaft rotates or slides, a minuscule amount of this solid lubricant is transferred to the mating surface, creating a low-friction film.

2. Porous Metal Structures: Sintered bronze or iron materials are created with microscopic pores. These pores are vacuum-impregnated with oil during manufacturing. In operation, slight heating causes the oil to expand and seep onto the bearing surface, providing lubrication. When it cools, the capillary action draws the oil back in, creating a closed-loop system.

3. Layered Composites: These often feature a strong backing (like steel), an intermediate sintered layer (like bronze), and a low-friction overlay (often PTFE-based). The PTFE layer provides the primary sliding surface, offering extremely low friction.

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Contrasting Logic: Oilless vs. Traditionally Lubricated Bearings

The Tangible Benefits: Why Make the Switch?

Choosing oilless bushings isn't just about eliminating grease guns. It's about unlocking significant operational advantages:

• Drastically Reduced Maintenance: This is the most obvious benefit. No re-greasing means less labor, less scheduled downtime, and simplified maintenance protocols. Imagine the savings across a factory floor!

• Enhanced Reliability: Lubricant starvation is a major cause of bearing failure. Self-lubricating bearings ensure consistent lubrication, leading to predictable performance and longer service life, especially in hard-to-reach locations.

• Superior Performance in Harsh Conditions: Oilless bushings excel where traditional lubricants fail:

  • High Temperatures: Certain types can operate at temperatures far exceeding the limits of conventional greases.

  • Low Temperatures: No grease means no stiffening or freezing issues.

  • Contaminated Environments: The absence of sticky grease reduces the ingress of dirt, dust, and debris.

  • Vacuum or Underwater: Ideal for applications where liquid lubricants are impractical or impossible.

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• Cost Savings (Total Cost of Ownership): While the initial purchase price might sometimes be higher, the TCO is often significantly lower due to savings on lubricants, labor, downtime, and potential component failure replacement.

• Environmental Friendliness: Eliminating oil and grease leakage prevents contamination of products, machinery, and the environment. Crucial for industries like food processing, pharmaceuticals, and textiles.

• Compact & Simplified Designs: Without the need for lubrication systems (nipples, lines, reservoirs), machine designs can be more compact and streamlined.

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Exploring Viiplus's Portfolio: Finding Your Solution

Viiplus offers a comprehensive range of self-lubricating bearings designed to meet diverse application needs. Understanding the different series helps in selection:

• JDB Series (Graphite Plugged Bronze): Excellent for high-load, low-speed applications, intermittent motion, and high temperatures. The graphite plugs provide continuous solid lubrication. Ideal for heavy machinery, molds, and hydraulic components.

• SF Series (PTFE-Based Composite): Typically metal-backed (SF-1: steel, SF-2: steel/bronze) with a PTFE-based lining. Offers very low friction, good wear resistance, and suitability for dry running or marginal lubrication. Common in automotive, office equipment, and hydraulics.

• JF Series (Bimetal Bushings): Combines a steel backing with a sintered bronze or lead-bronze lining. Good load capacity and fatigue strength. Often used with grease or oil but can operate marginally lubricated. Found in engines, chassis parts, and agricultural machinery.

• FB Series (Wrapped Bronze): Often made from bronze strip, sometimes with lubrication pockets or through-holes. A cost-effective solution for medium loads and speeds, typically requiring initial greasing but offering extended re-lubrication intervals.

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Quick Comparison Chart (General Guide):

(Note: This is a simplified guide. Always consult specific product data sheets or Viiplus experts for precise application requirements.)

Uncertain which material or type suits your project? Our Bushing Material Selection Guide is designed to help, or Contact Us for a Free Quote and Expert Advice.

Why Partner with Viiplus? Expertise Meets Quality

Choosing the right supplier is as critical as choosing the right bushing. Here’s why companies worldwide trust Viiplus:

• Deep Expertise: Our foundation in metallurgy and tribology, coupled with a talented R&D team, means we understand the science behind reliable movement. We don't just sell; we solve friction challenges.

• Uncompromising Quality: We employ advanced manufacturing techniques (including sand casting, centrifugal casting, metal casting, investment casting) and a rigorous quality management system, ensuring every bushing meets the highest standards.

• Comprehensive Range: From standard metric sizes in JDB, SF, JF, and FB series to custom solutions including cylindrical, flange, double flange bushings, wear plates, and guide rails – we have the portfolio to match your needs.

• Global Reach, Seamless Logistics: Based in China, we ship sliding bearings worldwide. Our professional team handles customs clearance efficiently, ensuring smooth, timely delivery with all necessary documentation.

• Customer-Centric Approach: We believe in ethical practices and building trust. We offer flexible production (single units to large series), competitive pricing, and  online support.

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