Cylindrical Bimetal Plain Bearings conforming to the Standard SAE 792 CuPb10Sn10, featuring indents, are designed for applications that require high wear resistance and load-bearing capacity. These bearings are composed of two metal layers, typically a steel backing and a copper-based alloy lining, which offers excellent sliding properties and durability. The indents, or dimples, in the surface of the bearings serve to distribute lubricant more evenly and retain it during operation, resulting in reduced friction, heat generation, and wear. The CuPb10Sn10 material is known for its high conductivity, ductility, and corrosion resistance, making it suitable for a wide range of industrial applications.

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Bimetal Plain Bearings to Standard SAE 792 CYLINDRICAL BEARINGS CuPb10Sn10 with indents
Metric Standard Bushing Housing Size Our China bimetal bushings typically have a Working temperature-40~+250°C, Coefficient of friction:Greased0.04 - 0.12 Surface hardness NormalHB> 200 depending on a variety of factors affecting performance.

Bimetal Bushing Material

Sliding layer with
lubrication indents
CuPb10Sn10 with
composition approx.:
Cu 80 %
Pb 10 %
Sn 10 %
Steel backing

Characteristics

Bimetal bearing with steel backing and bronze overlay
Particularly suitable for high specific loads with oscillating motion and low frequency
Applicable in rough operation conditions
High load capacity, very good resistance to fatigue strength at higher temperatures

Availability

Bimetal Bushings forms available in standard dimensions

• Cylindrical bushes

• Thrust washers with oil hole

• Sliding Plate

Bearing forms made to order: cylindrical bushes and thrust washers with non-standard dimensions, sliding plates, customized bearing designs
Joint bushings self-lubricating and pre-lubricated bearings are suitable for wind power generation and photovoltaic power generation installations, with lifetime maintenance free.
As CHINA MANUFACTURER in the field of oilless BUSHING technology, VIIPLUS Oilless BEARINGS supplies
a range of PLAIN BEARINGS products that has gained an excellent reputation for reliability and performance.The SELF-LUBRCIATING BEARINGS of Technology.
High temperature resistance Bimetal Diamond-shaped Bushings & Sliding Bearing

Overview

Heat-resistant Steel copper alloy Bimetal Bushes CuPb10Sn10 tin bronze Diamond holes lubricanting bearings made in china
VIIPLUS is an international company specialized in research, development and sales of self-lubricating bearings.Have perfect system development ability, machining ability, testing ability, complete and efficient sales service and overall solution ability.

This structure, whose mechanical strength is high, can be used under lubricated conditions and high-speed/high-load operation. It can be made from a variety of different materials, depending on the application, use conditions and lubrication.This is a bearing material in which aluminum alloy and copper alloy comprise a two- or three-layer structure with a steel backing.

Features

Normal cylindrical bushes, grooves, oil holes, slots, etc.

Metallic Bearings

These high-performance metallic bearing materials solve a host of problems that plague sliding parts.

Standard

The VIIPLUS quality of sliding bearing CHINA NATIONAL to be reached the standard of U. S. and GERMANY DIN 1494

DIN1494 standard bimetal bushing supplied by VIIPLUS.Our main oil-free bearing related products sales and services.For DIN1494 bimetallic bushing inquiries welcome to contact or online message

Material: steel + copper alloy (CuPb10Sn10) +

The product is based on high quality low carbon steel and sintered lead tin bronze alloy CuSn10Pb10.The diamond hole is rolled on the surface of the alloy and filled with special solid lubricant to effectively reduce wear.The steel back can be plated with anticorrosive coating as required.It is suitable for high temperature, water solution infiltration or other occasions where oil cannot be added or where oil is difficult.

Major Applications

Engine bearings, automotive parts, general industrial machinery, food machinery and household electric appliances

Technical parameters

• The highest PV value is 2.8 N/mm2·m/s for grease lubrication

• Matching shaft hardness 53 HRC

• Oil lubrication 10 N/mm2·m/s roughness Ra=0.32~0.63

• Maximum linear velocity V dry grease lubrication 0.4 m/s highest use temperature 200 ℃

• Grease lubrication 2.5m /s oil lubrication

• Tensile strength 185 N/mm 2 friction coefficient 0.05~0.22

• Hard alloy degrees

• HB 60~90 thermal conductivity 47w/(m·k)

• Coefficient of thermal expansion 18· 10-6k-1

• maximum bearing pressure P

• 150 n/was

Bimetal Bushing Size

Available as per drawing or sample, as drawing, Welcome Customized Drawings


Bimetal bushing VIIPLUS provides products with high compressive strength, small friction coefficient, good wear resistance, reduce the cost of machinery manufacturing, its performance has reached the level of similar products at home and abroad.The products are widely used in construction machinery, textile machinery, automobile industry, machinery industry and other fields, especially for the parts that are difficult to oil and can not oil have a good effect, free from oil pollution.
The enterprise takes "pursue excellence, keep improving" as the management objective, and strives to provide customers with first-class products and services.

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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