The dual mass flywheel bearing or bushing is a crucial component in the transmission system of many modern vehicles. Its main function is to connect the engine crankshaft to the transmission input shaft while effectively isolating engine vibrations from the vehicle's chassis and passenger compartment.

The dual mass flywheel consists of two rotating masses connected by springs and dampers, with the bearing or bushing located at the interface between the two masses. This design allows the flywheel to absorb and dampen engine torsional vibrations, reducing noise and harshness in the vehicle's cabin.

The bearing or bushing itself is a precision-engineered component made from high-quality materials, such as metal-plastic composites. It must be able to withstand the high loads and frequent rotations of the engine crankshaft while maintaining smooth operation and minimal wear.

Failure of the dual mass flywheel bearing or bushing can lead to various symptoms, including increased vibration and noise in the cabin, poor transmission performance, and even damage to other transmission components. Therefore, it's important to inspect and replace these components regularly as part of routine vehicle maintenance.

In summary, the dual mass flywheel bearing or bushing plays a vital role in ensuring smooth and reliable transmission operation while minimizing engine vibrations in modern vehicles.

Dual Mass Flywheel DMF Self-lubricating Bearings Supplier

Flywheel Bearing, a complete line of flywheels bushings.

Clutch Bushing Selection

Best value Flywheel Bearing – Great deals on www.bronzegleitlager.com

Automobile Industry Sliding Bearing Dual Mass Flywheel DMF & Seat Adjuster Self-Lubricating Bearings

VIIPLUS is committed to the production of safe and comfortable modern vehicles, adhering to the concept of high standards of application design, function, and performance, to optimize the selection of bearings for the automotive industry.VIIPLUS offers a variety of bearing solutions for automotive applications.

Typical Applications

VIIPLUS Specifically developed to meet the requirements of RoHS environmental protection of various types of self-lubricating bearings used in the automobile industry, such as Double Mass Flywheel Repair self-lubricating Bearings, when tight round, air conditioning compressor, fuel pump, start the motor, transmission, steering pump, steering column, shock absorbers, braking system, pedal assembly, seat adjustment system, door hinge, hinge, suitcase, hood wiper, including engine connecting rod, transmission, balance shaft, and other parts.

Provide efficient products for automotive applications

Even in the most demanding environments, customers can rely on the unique features of VIIPLUS sliding bearings, including low friction, high wear resistance, and high reliability.
Bearings for automotive applications include wiper, shock absorber, seat, gearbox, brake, steering, convertible top, interior, pillar, lever, pedal and other applications.

Create a superior driving experience

In recent years, the requirement of automobile equipment operation has been increasing. Our lead-free bearing material, with enhanced performance, can meet the most stringent performance requirements, better than ball bearings (limited space and weight, high load and swing movement may cause damage).
The bearing has many advantages, creating superior driving performance:
· long service life, reliable and smooth operation
· high wear resistance
Self-lubricating,
· low friction coefficient, low loosening torque, and no stick-slip phenomenon
· compatible with many standard oils and lubricants
· high precision and stable size

Our self-lubricating bearings advantages

· a wide range of efficient bearing materials and solutions to meet the most demanding application requirements.
· compact, lightweight solutions reduce fuel consumption and emissions.
· seat: seat adjuster and height adjustment mechanism.
· continuous innovation of technologically advanced products, systems, and tools to maintain our leading position in high-performance bearing technology.
· our application specialists provide technical support and customer-specific bearing designs to provide comprehensive customer support.

Metal Polymer Composites Plain Bearing

Improve quality and environmental standards
Our environmentally friendly, lead-free bearings reduce installation, operation, and maintenance costs.

• ROLLED DRY SLIDING BEARINGS ()
• Steel + Bronze Powder + /Fibre
• Wrapped Lined (maintenance-free), self lubricated plain or flanged bearings, thrust washer and strip, Carbon steel shell with sintered bronze layer filled with

VSB-10 Self-Lubricating Multilayer Composite Bushing

• Bushing material suitable for lubricated applications
• self-lubricating bushings offer very good wear and low friction performance over a wide range of loads, speeds and temperatures in dry running conditions
• Anti-friction bearing suitable for linear, oscillating, and rotating movements
• Material is designed to operate without supplemental lubrication and will perform excellent when lubrication is present. Low friction, low wear rate, good sliding characteristics and very low absorption are a few of the features of this material. VSB-10 bushings will support the rotary, linear and oscillating motion.

1. /Fibre mixture thickness 0.01~0.03mm. It is the contact surface for the rotating shaft. Minute partides of the layer and the sintered bronze material combine to create a solid lubricant film, which coats the shaft.

2. Sintered bronze powder thickness 0.20*0.35mm,A special composition of powdered copper is thermally fused to the steel backing. This contact layer acts as an anchor for the layer and conducts the thermal build up away from the bearing surfaces.

3. Low-carbon steel backing. Setting the foundation of the bushings, the steel back provides exceptional stability, load carrying and heat dissipation characteristics.

Carbon Steel + Copper Powder + ( + Pb + Filler)

· Metal-Polymer Composite Self-lubricating Bushing Material
· Steel Back + Porous Bronze Sinter +
· + Lead

Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Thrust washers
· Flanged washers
· Sliding plates

The main factors affecting the life of self - lubricating bearings

1: load P: the greater the load, the shorter the service life of the bearing;Under no circumstances shall the maximum load exceed the theoretical maximum allowable load.
2: speed V: the higher the speed, the shorter the service life of the bearing;Under no circumstances shall the maximum sliding speed 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 PV value is, the longer the bearing life is.
4: temperature: the life of the bearing also depends on the temperature when the bearing is in use, the higher the temperature, the shorter the life of the bearing, so in the design and selection should try to consider the heat dissipation characteristics of the relevant parts.
5: surface roughness of the grinding parts: alloy steel or hard chromium plated shaft is used for the grinding parts. When the surface roughness Ra=0.4-0.63, the service life of the bearing can be significantly improved.
6: other factors such as bearing 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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