RG7 CuSn7Zn4Pb7 bronze bearings are specifically designed for use in valves and other applications requiring high-performance and durability. The circular grooves type bushing is a common configuration for these bearings, providing optimal lubrication and wear resistance.
The CuSn7Zn4Pb7 alloy composition of these bearings offers excellent mechanical properties, including good strength, ductility, and wear resistance. The addition of lead (Pb) improves the material's self-lubricating properties, reducing friction and wear during operation.
The circular grooves in the bushing design allow for the effective distribution of lubricants, such as oil or grease. This ensures that the bearing surface remains well-lubricated, minimizing friction and wear. The grooves also help to trap any debris or contaminants, preventing them from damaging the bearing surface.
The RG7 CuSn7Zn4Pb7 bronze bearings are precision-manufactured to ensure dimensional accuracy and consistent performance. They are suitable for a wide range of valve applications, including those requiring high-pressure and high-temperature environments.
Overall, the RG7 CuSn7Zn4Pb7 bronze bearings with circular grooves type bushing offer superior performance, durability, and reliability for valves and other demanding applications.

We are a mining equipment bronze bushings parts supplier and manufacturing company. Offering mining equipment castings and replacement bronze bushings parts worldwide.

Cyclindrical Groove Bronze Sleeve Bushing Material CuSn7Zn4Pb7

Cast bronze sleeve bearings, flange bearings, and custom parts are available with oil grooves or grease grooves.

Gleitlager Aus Bronze

Gleitlager bronze shop- web store from China.

CC493K Gunmetal, Red Bronze Bearings Rg7 Cusn7zn4pb7 Bronze Bearings Circular Grooves Type Bushing For Standard Bearings, Sliding Parts, Valves, Pump Housings. Get A Free Quote.
Copper CuSn7Zn4Pb7 Multiple Loop & Circular Self Lubricating Grooves Bushing for Mining Loading.

Lead-tin bronze sleeve bushing manufacturer, For filled grooves type bearing surfaces, the groove pattern is machine precisely into the part.

VIIPLUS SLIDING BEARING has developed various technologically advanced product lines to meet customers’ needs. Bronze Sleeve Bearings were designed to withstand industries with severe and harsh applications. The combination of the cast bronze alloy base and the solid lubricant results in a bronze bearing that is maintenance-free. This self-lubricating bearing has gained in popularity over the years with the increasing need to meet industrial requirements for energy and labor cost reductions.

Cusn7zn4pb7-c is considered the "standard" type of bearing material for lead-tin bronze. The alloy has excellent machining properties, good hardness, strength and wear resistance, excellent wear resistance. Typical applications include bearings, gaskets, bushing, auto parts, main shaft bearing, machine tool bearings, crane bearing, trunnion bearing, roller bearing neck, rolling mill bearings, the sleeve is the fuel pump and pump shaft sleeve, diesel engine piston pin bushing, forging toggle lever bearing, stuffing box hydraulic press, hydraulic press mainlining, pump impeller, gm liner, fitting, pump assembly, outer spherical bearings, and so on.

The follow bronze alloy according to the environmental condition of the application:

Bronze Material: CuSn7Zn4Pb7

Bronze Bushing with/without graphite Installation

In most cases, Enduralube Bearings are used with a press fit in the same manner as general sleeve Bearings. Fit the Bearings into housings using mandrels or press. In case of a relatively large interference, provide both the ID of the housing and the OD of the Bearing with chamfers, and fit the bearing into the housing with mandrel for easy installation.

Graphite Bearing products simplify your lubrication requirements by taking the difficult and seemingly impossible and providing a reliable, efficient, and economical solution. The simplicity of the Metal Sliding Bearing opens the way for product improvements and economies impossible with other types of lubrication. These benefits can make your products more competitive, simpler, and more desirable to the end-user.
Benefits of National’s Graphite Bronze Bearings:
• Continuous lubrication over long periods without maintenance
• Simplification of product design by eliminating need for lubrication lines, hoses, pumps, etc…
• Long term resistance to scoring and wearing of moving parts.
• Ideal for environments that can be contaminated by leaking lubricants.
• Extended product life by assuring lubrication every time bearing surfaces move.
• Able to withstand high-temperature environments where traditional lubricated bearings normally fail.

Bronze Bushing Groove Type

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Material (Alloy) __________________________ Quantity _________________
Dimensions:
Inner Diameter ________________ Groove Style _______________
Outer Diameter ________________
Overall Length ________________ Flange OD ________________
Flange Thickness ___________Plate Length ________________

Plate Width ________________Plate Thickness ________________

Applications

High Temperature

• Steel Mills • Furnace Dragouts • Drying Equipment • Heat Exchangers

Automobile Manufacturing

• Press Dies • Welding, Assembly Lines • Chain Conveyors • Machine Tools

Water Resisting

• Dam Gates • Submersible Pumps • Hydro-Electric Surfaces • Off-Shore Structures

Heavy Industries

• Steel Tube Plant Machinery • Tire & Paper Mills • Power Generating Stations • Injection Mold Machinery

Construction, Mining, Loading

• Mixers & Grinders • Construction Machines • Mining Rigs • Power Shovels

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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