Multi-layer bearings with POM (Polyoxymethylene, also known as acetal plastic) wrapped FRI-MIX bushings offer a unique combination of properties that make them suitable for various demanding applications. POM, a highly versatile engineering plastic, is known for its excellent wear resistance, dimensional stability, and low friction coefficient. When combined with FRI-MIX bushings, these multi-layer bearings provide enhanced performance and durability.

FRI-MIX bushings are typically made of a composite material that combines the advantages of different materials. This allows for the optimization of properties such as wear resistance, friction coefficient, and mechanical strength. When wrapped with POM, the resulting multi-layer bearing offers superior sliding properties, low friction, and high wear resistance.

These multi-layer bearings are suitable for applications that require precise positioning, smooth operation, and long service life. They are commonly used in automotive components, machine tools, and other industrial equipment where reliability and performance are crucial.

The combination of POM and FRI-MIX bushings in multi-layer bearings provides a robust and reliable solution for demanding applications. Wh it's for reducing friction, improving wear resistance, or ensuring precise positioning, these bearings are designed to meet the challenges of modern industrial applications.

Wrapped Steel Backed Bronze Bushing, Multilayer material type , Replacement parts

viiplus® bushing: the best ever global industry standard for marginally lubricated metal polymer plain bearings made to order from china. Cylindrical bushes.Competitively Priced vs BUSH,Provides Composite Bushings & Thrust Washers Solutions.

Triple-layer bushing dimensions Wrapped bearing with acetalplastic

Multi-layer bearings is a 3-layer bearing, wrapped of copper-plated steel with a layer of POM. Composite Self-Lubricating Bushings Steel Shell with POM Plastic Liner - Inch and Metric

Choose below to go to either our metric or inch series online sliding bearings catalog METRIC BEARING POM BUSHES WITH OIL HOLES.pdf and product specifier for POM Series Bushings including size and tolerance downloads.

Tolerances : Shaft dia: f7 (< 55 mm id.) h8 (> 55 mm id.) Housing: H7

Material: Triple-layer bushing

Copper plated steel-layer (anti-corrosive) Sintered, multiporous bronze layer Acetal plastic layer (with grease pockets)

·Inch Dimension, Straight Bushings

·Inch Dimension, Thrust Washer Bushings

·Metric Dimension, Straight Bushings

·Metric Dimension, Thrust Washer Bushings

·Metric Dimension, Strip Bushings

Porous bearing,Sliding bearing, Self-lubricating bearing, Solid lubricants embedded bearing Steel Shell with POM Plastic Liner - Inch and Metric

Tolerance Details

• Housing ØH7
• Bushing inner-Ø after mountingIn the range of D
• Shaft toleranceh

POM Boundary Lubricating Bearings | VIIPLUS Bushings online sale FRIMIX bushing bearing

Multi-layer Bearings Plain bearings with resin sliding surface on thin back steel.
Demonstrate superior sliding peformance, wear resistance and thermal conductivity.

Bronze Bushing Multi Layered Bearings refer to plain bearings of thin walled with self-lubricating functions.
They are high performance, high quality, lubrication-free and maintenance-free bearings for various industries.

A wide variety of viiplus bushing options are available to you, such as free samples. bronze backing with lined SF-1B Bushing , S-PM POM steel backed plastic covered bush , bushing FRIMIX Glyco PG A

Description

The VSB-20 FRI-MIX consists of a steel back, sintered porous copper powder interlayer and a surface modified polyformaldehyde (POM) sliding layer to form a surface rolling oil storage pit, thus achieving good lubrication between friction pairs.POM plain bush, yellow POM SF-2 slide bushing, sleeve bushIt has good wear resistance and bearing capacity.The steel backing provides higher mechanical strength and carrying capacity of the bushing. In addition, the surface of the steel backing is corrosion-resistant.VSB-20 series products are widely used in automobile chassis, forging press, crane, press, agricultural equipment, etc

Technische Daten

• Wrapped composite sliding bearing
• Tin-plated steel / acetal resin (POM)
• Low-maintenance
• With lubrication pockets
• Flanged sliding bearings on request

Properties

• Suitable for grease or oil lubrication and all kinds of movement, good load capacity, robust and insensible to dirt.

Materials

• Support material steel tin-plated
• Intermediate layerSintered bronze
• Sliding layerAcetal resin / POM

Material Properties

• Specific load capacity static≤ 250 [N/mm2]
• Specific load capacity dynamic≤ 140 [N/mm2] at low sliding speed
• Sliding speed≤ 2.0 [m/s]
• Friction value ***0.03 [µ] to 0.20 [µ] depending on lubrication
• Temperature strain– 195 [°C] to + 280 [°C]
• Max. PV-value1.8~3.6 [N/mm² x m/s]

Maintenance

• is a low-maintenance composite sliding bearing with a POM coating? Primary lubrication is necessary. Oil or grease lubrication is possible. Because of lubrication pockets, lubrication clearances are reduced to a minimum!

Specifications
TRIMIX bushing bearing POM bushing

We are supplying all kinds of oilless bushings in good prices and quality.

FRIMIX is a steel bearing with an internal plastic layer with grease pockets.

FRIMET is a bearing with steel backing (or bronze) and an internal layer. DRINOX is a bearing with a stainless steel backing and internal layer.

SF-2(SF-2Y,without lead) is made of triple layer composites:

low-carbon steel as base, porous bronze interlayer, POM&Pb(or non-Pb mixture) surface layer.

The products are widely used in machinery industry, such as auto machines, punch machine, forging and pressing machine, vehicle chassis, lifting equipments, mining machinery, steel industry, etc.

Features:

1. It fits for low speed, heavy duty

2. Well anti-wear
3. Low vibration, low noise. compact and light

Professional Manufacture for Bushings.

Produce by your Requirments. We Welcome your Inquiry!

MOQ: 100pcs ,For Standard Sizes

RANGE OF APPLICATION

• Machine construction, apparatus engineering, agricultural and construction machines, hydraulic cylinders

Caption

*Flanged sliding bearings and special dimensions are only available on request

Produce by your Requirments. We Welcome your Inquiry!

(MOQ: 100pcs ,For Standard Sizes.)You can use our “Enquiry Form” to get in touch with us. One of our sales team will contact you immediately.

Shipping

1.Delivery Time : Usually 15-20 days.Depends on your quantity.

2.Generally, Free of standard size sample within 5 days.

Supply Ability

10000 Piece/Pieces per Day mixture order is ok
Packaging & Delivery
Packaging Details:Carton and Pallet
PortShanghai
Lead Time :30 days

Other bushing

• Cylindrical Bushings
• FlangedBushings
• Thrust Washer
• Thrust Plate
• Plate for Machining
• Tube for Machining
• Other

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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