A track roller bushing is a mechanical component that is typically used in track roller assemblies. It serves as a bearing surface between the track roller and the surface it rolls over, such as a rail or track.

Track roller bushings are designed to reduce friction and wear, allowing the track roller to rotate smoothly and efficiently. They are commonly made from materials such as steel, stainless steel, or high-performance plastics, depending on the specific application and operating conditions.

The bushing is typically inserted into a hole or recess in the track roller, with the outer surface of the bushing in contact with the track or rail. The inner surface of the bushing interfaces with the axle or shaft that drives the rotation of the track roller.

In some cases, track roller bushings may be self-lubricating, utilizing materials or coatings that have lubricating properties to reduce friction and wear. This can extend the life of the bushing and improve the overall performance of the track roller assembly.

Track roller bushings are widely used in various industrial applications, including material handling, conveyor systems, and automation equipment. They are essential components for ensuring smooth and reliable operation of track roller assemblies in these applications.

Track roller Bushing

Bimetal Bearings Bushing Supplier ...

bimetal bearing is made of steel sintered with CuPb10Sn10 or CuSn6Zn6Pb3 as a lining layer. This type of bushing shows its best performance among bushings made of Cu-lead alloy material in this product range. It suits most for middle speed and high impact conditions. Its application including balance suspensions of heavy-duty trucks, track roller of bulldozers, auto chassis, etc.

The surface of copper-lead and low tin material bearing bush is electroplated complex alloy(Pb-Sn-Cu or Pb-Sn-In-Cu), and it has higher endurance strength and shock resistance than aluminum base bearing bush. Apply to high speed, heavy load main bearing bush, connecting rod bearing bush, and so on.

Steel bearing with lead bronze lining bearing material for oil lubricated applications. This material has a high load carrying capacity and good fatigue properties. It is widely used in automotive applications such as compressor, steering, power steering, pedal bearings, kingpin bushings, tailgate pins, mechanical handling and lifting equipment, hydraulic motors, agricultural machinery etc.

Bimetal Bushing Basic Properties

Bi-metal Steel Backed Leaded Bronze Bushing

Bimetallic lead bronze bushing material with steel backing, suitable for oil lubricated applications. This material has high load capacity and good fatigue properties. It is widely used in automotive applications such as compressors, steering gear, power steering, pedal bushings, steering pin bushings, tailgate journals, mechanical handling and lifting devices, hydraulic motors and pumps, agricultural machinery, etc.

Bimetal Bushing Structure

1. Bi-metal sintered bronze layer: Good wear resistance and excellent load-bearing capacity.
2. Steel back: The steel back forms the foundation of the bushings and offers exceptional stability, load-bearing capacity and heat dissipation properties.

Bimetal Bushing Application

This bimetallic bushing material is recommended for use in medium speed and medium load conditions with oil or grease lubrication. It is widely used for engine piston rod ends, Kingpin bushings, undercarriage rollers, construction machinery hydraulic cylinder cylinders and agricultural machinery ball joint bearings.

Bimetal Bushing 800 Alloy CuPb10Sn10 Chemical Composition ( % )

Physical & Mechanical Properties

Usage Range

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.

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.

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.

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.