The Clutch Belt Pulley Bimetal Bushing is a crucial component that plays a vital role in the efficient operation of clutch and belt pulley systems. Made from a combination of two metals, the bushing provides enhanced strength, wear resistance, and durability compared to traditional single-metal bushings.

The bimetal construction of this bushing typically consists of an outer layer of steel or another hardwearing metal for durability and load-bearing capability, while the inner layer is made of a softer metal like bronze or brass for improved wear resistance and lubrication. This combination of materials allows the bushing to withstand the high forces and friction encountered in clutch and belt pulley applications.

The Clutch Belt Pulley Bimetal Bushing is designed to fit precisely into the pulley system, providing a smooth and reliable interface between the rotating components. It helps to reduce friction and wear, ensuring the smooth operation of the clutch and belt pulley system.

The use of a bimetal bushing in clutch and belt pulley applications can significantly improve the overall performance and reliability of the system. It can reduce the need for frequent maintenance and repairs, resulting in lower operating costs and improved uptime.

In summary, the Clutch Belt Pulley Bimetal Bushing is an essential component that provides enhanced strength, wear resistance, and durability for clutch and belt pulley systems. Its bimetal construction and precise fitment ensure smooth and reliable operation of the system.

Bimetal Bushings Assembly, Clutch Belt Pulley Bushing

bimetal bearing is made of steel sintered with CuPb10Sn10 or CuSn6Zn6Pb3 as a lining layer.This type of bushing show 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.

All Sizes & Types of Bushings for Belt Pulleys, Bimetal Bushing & Bearings

Bushing for Timing belt transmissions
Bushing for V-Belt transmissions
Bushing for Right-angle gearboxes
Bushing for Fixing elements
Bushing for Couplings & torque limiters
Bushing for Sprockets – Baseplates

The bearings are intended to be pressed into housing with H7 tolerance. The inner diameter of the slide bearing will then hold tolerance H9.
Bimetal-Bushings JF800 | Self Lubricating bearings
material strip Wrapped steel bushing split carbon steel bronze alloy(CuSn10Pb10)
Composite sliding bearing, steel/bronze - with lubrication pockets VSB-80
Oilless JF800 Bimetal Metal Bushing Bimetal sheet wrapped bronze alloy bushing / Steel bronze CuSn10Pb10 bush
Steel + Lead Bronze Powder

Features

Steel shell backed with a lead bronze lining bearing material 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 bearings, king-pin bushes, tailgate pivots, mechanical handling and lifting equipment, hydraulic motors, agricultural machinery etc.

Bimetallic bearing is made of lead-tin bronze alloy sintered on the surface of high quality low carbon steel back, which is rolled into copper and steel strip after several times of high temperature sintering and dense rolling.The product is one of the strongest copper-lead alloys and has a wide range of applications. It is most suitable for various applications such as bushes and thrust washers under medium speed and high impact loads.


Because the matrix is stable as low carbon steel material, so the machining accuracy of the outer diameter of the shaft sleeve has been guaranteed, and there is no need for screw fixation after the product is loaded into the seat hole, relying on interference fit can prevent the phenomenon of going out of the circle.The change of chemical composition of inner surface alloy layer can meet the requirements of different bearing pressure, different service temperature and different sliding speed. The oil groove and oil hole with different structure are designed in the production of friction surface to meet the requirements of different ways of oil adding, prevent shaft biting and adapt to different lubrication conditions.
Widely used in automobile engine, motorcycle clutch, light industrial machinery, construction machinery.
Alloy layer material CuPb10Sn10 or CuSn6Zn6Pb3

Typical Characteristics

Suitable for low speed, heavy load or intermittent movement conditions, lubricating oil film can not form or maintain the occasion;
Suitable for the working environment or mechanical structure restrictions, it is difficult to supply oil lubrication occasions;
It is suitable for rotating, reciprocating, swinging, linear and other forms of movement, as well as occasions requiring frequent starting or starting under high load;
Suitable for high or low-temperature work, or the environment temperature range of large occasions; Good corrosion resistance, can be used in seawater and other corrosive media such as chemical liquids or gases, as well as water containing sediment or the radioactive environment;
Non-water absorption, good dimensional stability, high mechanical strength, good thermal conductivity;
Bearing is a thin wall structure, lightweight, small volume, suitable for compact design;
Compared with the traditional three-layer composite material, the static load characteristics, wear-resistance, service temperature, dimensional stability, and so on under the condition of non-grease lubrication are better;
Compared with copper inlaid self-lubricating material, it is more suitable to work under the condition of small Angle swing, and the price is cheaper.

Range Of Application

Typical Applications
This material is recommended to be used under the medium speed and medium load condition with oil or grease lubricating. It is widely used for motor rod ends, Kingpin bushing, undercarriage rollers, hydraulic cylinder rod eyes of construction machines, and spherical joint bearings of agricultural machines. Because this material is with lead, the specific parts are not allowed to be used according to certain laws or regulations.


The products are applied to water conservancy and hydropower industry: hydraulic machinery: horizontal support slide of hydraulic steel gate, support bearing of the hydraulic hoist and closure machine, sandblasting maintenance door bearing, etc. Hydraulic turbine: guide vane shaft sleeve (upper guide, middle guide, lower guide), wheel shaft sleeve, pin shaft sleeve (connecting rod pin, push and pull rod pin, relay piston pin), anti-wear ring plate (thrust ring), anti-wear block, control ringside tile.
Metallurgical industry: die-casting machine bearing, rolling cutting shears (bilateral shears, fixed-length shears on the skateboard), etc.
Valve industry: butterfly valve, globe valve, etc.
Others: mining machinery, packaging machinery, construction machinery, heavy machinery, injection molding machine, automobile tire mold, wind turbine, thermal power, and other industries.

Agricultural Machine

As the self-lubricating bearing has the characteristics of maintenance-free and good abrasion resistance under dust and outdoor conditions, it is widely used in the cylinder, the suspension system of the combine harvester, planter, baler, crusher, tractor, Joints, and other parts can not be difficult to form oil or oil film parts.

• Forklifts
• Pallet Trucks
• Cranes
• Excavators

Technische Daten

• Wrapped composite sliding bearing
• Copper-plated or tin-plated steel/bronze
• Low-maintenance
• With lubrication pockets

Properties

• For high load capacity and oscillating movement, as well as for rough operation and temperature load. Long-run lubrication because of lubricant storage.

Materials

• Support materialSteel copper-plated / tin-plated
• Sliding layer CuPb10Sn10

Material Properties

• Specific load capacity static≤ 250 [N/mm2]
• Specific load capacity dynamic≤ 140 [N/mm2]
• Sliding speed≤ 2,5. [m/s] ≤ 5 [m/s] oil lubricated
• Reibungswert **0.04 [µ] to 0.12 [µ] depending on lubrication
• Temperature strain– 40 [°C] to + 250 [°C]
• Max. PV-value2.8 [N/mm² x m/s]
• Percentage contact area > 75 [%]

Tolerance Details

• Housing ØH7
• Bushing inner-Ø after mountingH9
• Shaft tolerancef7 to h8

Maintenance

• is a low-maintenance composite sliding bearing, but primary lubrication is necessary. Oil or grease lubrication is possible. Due to solid lubricant storages, lubrication clearances are reduced to a minimum!

Caption

Special dimensions are available on request

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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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