Tin or Copper Plated Dry Bushings made of Bronze Gleitlager Material, available in Straight and Shoulder configurations, are precision-engineered components that adhere to the ISO 3547 standard. These bushings feature a tin or copper plating, which provides excellent wear resistance and corrosion protection, enhancing their durability and longevity. The bronze Gleitlager material offers superior mechanical properties, making these bushings suitable for heavy-duty applications. The straight and shoulder designs offer flexibility in installation and allow for easy integration into various machinery and equipment.

Metal Polymer Composite Bearings - Maintenance-free Steel Backed Composite Bushing

Order Bronze Gleitlager & Lagerbuchsen Online From bronzegleitlager.com

Beyond Bearings: Enhancing Performance with Polymer Coatings

Composite Bronze Gleitlager Structure

• 1. /Pb mixture 0.01~0.03mm as sliding layer, provides an excellent initial transfer film, which effectively coats the mating surface of the bearing assembly, forming homogeneous oxide type solid lubricant film.
• 2. Porous bronze 0.2~0.3mm, provides Max. thermal conductivity away from the bearing surface, also serves as a reservoir for the -lead mixture.
• 3. Low-carbon steel backing 0.7~2.3mm, provides fundamental structural support and gives exceptionally high load carrying capacity, excellent heat dissipation.
• 4. Tin-plating 0.005mm or copper plating 0.008mm, provides good corrosion resistance.

Composite Bronze Gleitlager Characteristics

• · Good wear and friction performance over a wide range of loads, speeds and temperature without oil
• · Also perform well with lubrication
• · Maintenance-free, long life

Availability

• · Standard cylindrical bushings, flange bushings, thrust washers and straps available.
• ·Lead-free type is also available
• · All special designs are made according to your requirements.

Composite Bronze Gleitlager Application

composite bearing is widely used in lifting equipment, hydraulics and valves, pneumatic equipment, medical equipment, textile machinery, agricultural equipment, construction equipment, material handling equipment, packaging equipment, automotive industry, science equipment, dryers, office equipment etc .

We offers Flanged bushings composite & Thrust washers composite products from china,Material PAP bushes. PAF flange bushes. PAW thrust washers. PAS strips. PAP P10. PAF P10. PAW P10. PAP P11 bronze backed bearings cheap price made to order from china.

We have a large selection of plain bushes and flanged bearings for various applications.

gleitlagerbuchsen,lagerbuchse gleitlager,Your development, construction and manufacturing experts!Resistant to high temperatures of 600 degrees Celsius.Made in China.Category: maintenance-free plain bearings, copper sleeves, shaft sleeves.https://www.viiplus.com
Rolled bearings are based on high-quality cold-rolled steel plates with porous spherical bronze powder sintered in the middle, and then a mixture of polytetrafluoroethylene () and fibers is sintered on the surface of the porous spherical bronze powder layer, and the rolled sliding Bearings.
This product has the characteristics of small friction coefficient, wear resistance, good corrosion resistance and self-lubrication. The use of this product can reduce the cost, reduce the mechanical volume, avoid the occurrence of shaft biting and reduce mechanical noise.
This product has been widely used in various mechanical sliding parts, such as printing machines, elevators, textile machines, tobacco machines, fitness machines, hydraulic vans, micro-motors, solenoid valves, automobiles and agricultural and forestry machinery.


Dry Bushing Straight & Shoulder Heat resistant temperature -195 ~ 280℃

* 1) deburring and flanging the inner and outer diameter chamfering below the inner diameter d10.
2) the chamfering Angle is C0.3 when the inner diameter d is more than 10 and the plate thickness is 1.0.
・ material

tetrafluoride resin layer with filler

Bronze sintered layer

Steel metal base
Environment: standard/in oil
Multilayer system: steel, sintered bronze, tetrafluoroethylene
Mounting shaft fit tolerance: e7
Mounting hole fit tolerance: H7
Lubrication condition: no lubrication
Allowable maximum surface pressure P: 49
Permissible maximum speed V: 0.65
Allowable maximum PV value (range) : 2.1 ~ 5.0
Allowable maximum PV value: 3.6

Factors Affecting Life

1: Load P: The larger the load, the shorter the bearing life; in any case, the maximum load must not exceed the theoretical maximum allowable load.
2: Speed V: The higher the speed, the shorter the bearing life; in any case, the maximum sliding speed cannot exceed the theoretical maximum allowable value.
3: PV value: The working life of the bearing depends on the PV value, that is, the product of the actual load P and the sliding speed V. The smaller the PV value, the longer the bearing life.
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4: Temperature: The life of the bearing also depends on the temperature at which the bearing is used. The higher the temperature, the shorter the service life of the bearing. Therefore, the heat dissipation characteristics of the relevant components should be considered in the design selection.
5: Surface roughness of the grinding parts: When the grinding parts are made of alloy steel or hard chrome-plated shaft, the bearing life can be significantly improved when the surface roughness Ra=0.4-0.63.
6: Other factors such as bearing housing design, lubrication conditions, etc.

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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