In the world of industrial applications, metal-polymer plain bearings have become a highly sought-after solution for a wide range of machinery and equipment. These bearings, which combine the durability of metal with the wear-resistant properties of polymers, offer an optimal balance between performance and cost-efficiency.

When it comes to lubrication, grease-lubricated metal-polymer plain bearings provide a reliable and long-lasting solution. The grease acts as a lubricant, reducing friction and wear between the moving parts. This not only extends the lifespan of the bearings but also ensures smooth and efficient operation.

On the other hand, self-lubricating bearings, such as PAP P10 elevator bushings, are designed to operate without the need for external lubrication. These bearings feature a unique polymer composite material that incorporates a solid lubricant into the bearing material itself. As the bearing rotates, the solid lubricant is released, providing continuous lubrication and reducing the risk of wear and failure.

PAP P10 elevator bushings are particularly suited for applications in elevators and other vertical transportation systems. The self-lubricating properties of these bushings ensure reliable operation even under heavy loads and frequent movement. The material's high wear resistance also ensures a long service life, reducing the need for frequent maintenance and replacement.

Overall, metal-polymer plain bearings with grease lubrication and self-lubricating PAP P10 elevator bushings provide optimal solutions for a variety of industrial applications. Wh you're looking for a reliable and long-lasting bearing solution for your elevator or other equipment, these products are sure to meet your needs.

Polymer Plain Bearings

Stainless self lubricating plain bearings.is a self-lubricating triple-layer bearing specifically suited for corrosive environments, and the food industry. Outer mantle is of stainless steel and the self-lubricating slide layer consists of a special polymeric material similar to the but without lead content.

Metal-Polymer Plain Bearings Grease Lubricated | Self-Lubricating Bearings PAP P10 METAL Bushings Cylindrical Elevator Bushing Stainless steel (anti corrosive)

Description

• 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

Characteristics

VSB-10 Self-Lubricating Multilayer Composite Bushing

Typical features are suitable for use without lubricating oil, low friction resistance, wear resistance, long service life;
Suitable for use in various forms of motion such as rotation, reciprocation and oscillation;
It has stable low friction coefficient and excellent wear resistance under high load and low speed.
Oil lubrication conditions for more effective use, in the middle, high speed field can show a high PV value;
Cardiac use wide temperature range, can be in 200 ℃ ~ + 280 ℃ temperature range;
Dynamic and static friction coefficient is basically close to, can overcome the "crawling" phenomenon, running smoothly;
Excellent corrosion resistance, can be used in a variety of corrosive media (including liquid and gas);
Bearings for thin-wall structure, light weight, occupies a small volume, suitable for compact design;
Good dimensional stability, high mechanical strength, with good thermal conductivity;
Transfer film formed in the process of operation, play a role in protecting the grinding shaft, no shaft bite phenomenon.

Typical Applications

• Hydraulic pump industry: mainly used in medium and high pressure gear pump, vane pump, plunger pump, etc.
• Automobile industry: shock absorber (guide sleeve), power steering, clutch, gearbox shift lever, wiper, steering machine transposition and hand brake device, ABS system, gasoline engine and diesel engine injection pump, pedal support, trailer coupling head, engine and trunk cover hinge system, etc.
• Other: metallurgical industry, continuous casting and rolling mill, cement machinery, screw conveyor, hydraulic truck, elevators, micro motor, hydraulic motor, hydraulic equipment, pneumatic (cylinder guide sleeve) equipment guide sleeve (cylinder), electromagnetic valve, medical equipment, fitness equipment, textile machinery, agricultural machinery, scientific instruments, drying furnace, printing machinery, office equipment (printers, photocopiers and fax machines), butterfly-valve, cut-off valve, motorcycle (shock absorber), etc.

Pallet Trucks Plain Bearings & Elevator Bushings

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

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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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