DIN 1494 and ISO 3547 are standards that specify the requirements for wrapped bronze bushes, which are commonly used as sliding bearings in various mechanical applications. The material designation CUSN8P refers to a tin bronze alloy, which is widely used for its excellent wear resistance, low friction, and good corrosion resistance.

Key Features of DIN 1494 / ISO 3547 CUSN8P Wrapped Bronze Bushes:
Material (CUSN8P):

Composition: Copper (Cu) with approximately 8% tin (Sn) and small amounts of phosphorus (P).

Properties: High strength, good wear resistance, and compatibility with various lubricants.

Design:

Wrapped Construction: The bushes are made by wrapping a strip of bronze alloy into a cylindrical shape and then sintering or bonding it to form a solid bearing.

Perforations and Lubrication Pockets: These features are designed to retain lubricant, ensuring consistent lubrication during operation and reducing friction and wear.

Applications:

Suitable for high-load and low-speed applications.

Commonly used in automotive, industrial machinery, agricultural equipment, and construction machinery.

Standards Compliance:

DIN 1494: German standard for wrapped bushes.

ISO 3547: International standard for wrapped bushes, ensuring global compatibility and quality.

Lubrication:

The perforations and lubrication pockets help maintain a lubricant film, reducing friction and extending the bearing's lifespan.

Can be used with oil, grease, or other lubricants depending on the application.

Advantages:

Excellent load-bearing capacity.

Good conformability and embeddability for dirt or debris.

Suitable for both rotary and oscillating motions.

Typical Dimensions:
Available in various inner diameters (ID), outer diameters (OD), and lengths (L) as per the standards.

Custom sizes can also be manufactured based on specific requirements.

Installation and Maintenance:
Proper installation is crucial to ensure optimal performance.

Regular lubrication is necessary to maintain performance and extend service life.

If you need specific dimensions, technical data, or further details, feel free to ask!

DIN 1494 / ISO 3547 CUSN8P Wrapped Tin Bronze Bushes refer to sliding bearings made of wrapped tin bronze alloy (CUSN8P) that adhere to the specifications outlined in the DIN 1494 and ISO 3547 standards. These bearings feature perforations or lubrication pockets to allow for proper lubrication and reduced friction. The perforated design enables the passage of lubricating oil or grease, which is crucial for ensuring smooth and efficient operation. The use of tin bronze alloy (CUSN8P) provides excellent wear resistance, corrosion resistance, and mechanical properties, making these bearings suitable for various applications.

Bronze Sleeve made of CuSn8 with Lubrication holes split type, Consult us for a quote.

Bushing sleeve forms made to order: cylindrical bushes with non-standard dimensions, flanged bushes, sliding plates, customized bearing designs

Bronze mesh material
Wrapped bushing, Bronze CuSn8P, DIN 1494 / ISO 3547, Low-maintenance

Solid bronze bearings with lubrication indents offer high load capacity, good wear resistance under rough conditions & low speeds. Consult china bushing sleeve supplier for a quote.

Wrapped Tin Bronze Bushes Sliding Bearing bushing sleeve brass bearing sleeve brass sleeve bushing bushing sleeve

Bronze Plain Bearing,CUSN8P Bronze Gleitlager Wrapped Bronze Bushes Sliding Bearing :E92F 5050 Bushing,Bronze bushing flange ID50 OD55 F65 L50.pdf；Get a Free Quote- With Perforations lubrication pockets, research and production of a variety of self-lubricating bearings, oil-free bearings, sliding bearings and other professional Wrapped Tin Bronze Bushes Sliding Bearing products manufacturers.The company has a professional team, advanced and complete equipment, scientific and perfect management, Wrapped Tin Bronze Bushes Sliding Bearing sales throughout the world, by the majority of domestic and foreign customers trust and praise.https://www.viiplus.com

The Wrapped Tin Bronze Bushes Sliding Bearing with a bronze perforation hole used CuSn8 as a base, designed to create regular oil holes on a better work surface, has a high load capacity, good wear resistance and a low coefficient of friction, it has been widely applied to transport machinery, lift, spiral machines and agricultural equipment.

WRAPPED TIN BRONZE BUSHING SLIDING BEARINGS MATERIAL

CuSn8 material: tin bronze bushing

Tin bronze is a kind of copper alloy.

Tin bronze:

Bronze with tin as the main alloying element.Tin content is generally 3 ~ 14%, mainly used for making elastic components and wear - resistant parts.The tin content of deformed tin bronze is not more than 8%, and phosphorus, lead, zinc and other elements are sometimes added.Phosphorus is a good deoxidizer and improves fluidity and wear resistance.The machinability and wear resistance of tin bronze can be improved by adding lead, and the casting performance can be improved by adding zinc.This kind of alloy has higher mechanical properties, wear reduction properties and corrosion resistance, free cutting, good brazing and welding properties, small shrinkage coefficient, non-magnetic.The coatings of bronze bushing, shaft bushing and diamagnetic element can be prepared by wire flame spraying and arc spraying.Various sizes are available.With high strength, corrosion resistance and excellent casting properties, it has been widely used in various industrial sectors for a long time.

CHARACTERISTICS

·Very good for rotation and linear motion.

·Low sensitivity in dirty and rough environment

·Good corrosion resistance medium

·Has a large wear depth, also suitable for rough machining.
(limit < 0,15 x wall thickness [mm])

·Even at low speeds, the sensitivity to impact loads and vibrations is low.

·Lubricate essential fats or oils regularly (lithium saponified fats are recommended)

·Lubricating holes are used as lubricant stores and dirt traps.

·A thin axle is available

ADVANTAGES

·Extra high load capacity
·Good lubrication properties
·Wide temperature range

·Easy to assemble

TECHNICAL DATA

BUSHING TOLERANCE DETAILS

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

Mating Material

surface roughness Ra = 0,4 μm
minimum hardness > 200 HB

BUSHING AREA OF USE

Hydraulic cylinders, construction machines, crane construction, agricultural machines

Tin Bronze Bushing is a low-maintenance Wrapped Tin Bronze Bushes Sliding Bearing, primary lubrication is necessary. Oil or grease lubrication is possible. Due to lubrication pockets lubrication clearances are reduced to a minimum.

BEARING TYPE

Plain cylindrical bearings, flanged bearings, thrustwashers, slidingplates.

APPLICATION

Agricultural machinery, truck cranes and construction machinery, suitable for impact loads

MAINTENANCE

It is a sleeve material that does not require special care. Initial lubrication during installation is necessary, after which periodic lubrication with oil or grease is mandatory. Diamond pockets are an excellent lubricant store and keep maintenance to a minimum.

Wrapped Tin Bronze Bushes Sliding Bearing, CuSn8 tin-bronze alloy is a material, a rhombic hole for surface rolling, because as the role of a storage grease, it has good fatigue strength and load capacity, corrosion resistance, wear resistance. Widely used in agricultural machinery, construction machinery, construction machinery and other high speed at low speed.

The Wrapped Tin Bronze Bushes Sliding Bearing are wrapped with cold-formed homogeneous bronze (CuSn8) with exceptional material properties. Standard sizes are formed with diamond lubricating grooves on the bearing surface. The recesses serve as lubricant reservoirs, which quickly form a lubricating film at the beginning of the movement and then reduce working friction. These materials are suitable for use in construction and agricultural machinery.


TheWrapped Tin Bronze Bushes Sliding Bearing is encased in homogeneous bronze capable of forming cold, which will obtain exceptional material properties. The standard bearing is equipped with diamond-shaped lubrication cutouts on the bearing surface. These setbacks serve as lubricant reservoirs to quickly form a lubricating film in the starting movement and reduce starting friction. Typical application: widely applied in lifting machines and other construction machines, automobiles, tractors, trucks, machine tools and some mineral engines.

WE ARE A PROFESSIONAL
SELF-LUBRICATING BEARING MANUFACTURER & SUPPLIER

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If you have any questions, please feel free to contact us,you are always welcome, thank you!

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.

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.

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.

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.