When it comes to fluid solenoid valves, the role of bushings cannot be underestimated. Professional fluid solenoid valve bushings, specifically designed as self-lubricating steel bushings, offer several key advantages that ensure smooth and reliable valve operation.

Self-lubricating steel bushings are made from a special alloy that has inherent lubricating properties. This means that they do not require additional lubricants to function effectively, significantly reducing maintenance requirements and downtime. The self-lubricating material also helps to reduce friction and wear, extending the lifespan of the bushing and the valve itself.

In addition to their self-lubricating properties, professional fluid solenoid valve bushings are precision-engineered to fit the specific requirements of the valve. They are designed to provide a tight and reliable seal between the valve stem and the valve body, preventing fluid leakage and ensuring consistent performance.

The steel material used in these bushings offers excellent strength and durability, ensuring that they can withstand the rigors of continuous operation in demanding industrial environments. The bushings are also resistant to corrosion and other forms of degradation, further extending their service life.

In summary, professional fluid solenoid valve bushings made from self-lubricating steel offer a reliable and long-lasting solution for ensuring smooth and efficient valve operation. Their unique combination of materials and precision engineering ensures superior performance and durability in even the most challenging applications.

Professional Fluid Solenoid Valve Bushings

Fluid Solenoid Solution The bearing used stainless steel and a self-lubricating separator of fiberglass reinforced TEX. To give additional strength to the riveted separator in this bearing,Woven Fabric Liner were added More wear resistance and corrosion resistance extend life Wrapped composite sliding bearing Stainless steel 316 / fibres fabric gleitlager valve bushings application | VSB-36
Professional fluid solenoid valve bushings manufacturers
solenoid valves bushings & pumps bushings

Favorable China Price + Stable Quality=Competitiveness

Stainless steel backing sintered with bronze powder overlaid with fibres fabric Suitable for dry running, low coefficient of friction, lower wear.

APPLICATION

VIIPLUS 2018
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VIIPLUS SLIDING BEARING SOLUTIONS FOR YOUR APPLICATIONS

TECHNISCHE DATEN

• Wrapped composite sliding bearing
• Carbon-steel / fibres fabric
• Maintentance-free
• Available on request

PROPERTIES

• Excellent sliding and wear behaviour, especially in case of rotating and oscillating movement, good shock absorption, very high load capacity, no water absorption

MATERIALS

• Support materialCarbon steel
• Sliding layer fibres fabric
• Support material: Stainless steel and bronze on request

MATERIAL PROPERTIES

• Specific load capacity static≤ 350 [N/mm2]
• Specific load capacity dynamic≤ 180 [N/mm2]
• Sliding speed< 0.5 [m/s] 1 [m/s] lubricated
• Friction value ***0.03 [µ] to 0.20 [µ]
• Temperature strain– 50 [°C] to + 250 [°C]
• Max. PV-value1.8 [N/mm² x m/s]

MOUNTING ADVISE

• The application of an adequate force fitting mandrel is advisable

TOLERANCE DETAILS

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

MAINTENANCE

it is a dry sliding bearing with glued fibres fabric overlay. Lubrication is therefore not necessary and not allowed.

RANGE OF APPLICATION

• Machine and crane construction, apparatus engineering, agricultural machines, fittings, water pumps, chemical industry

CAPTION

This sliding bearing type and special dimensions are only 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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