CuSn6Zn6Pb3 Bronze Bushing
CuSn6Zn6Pb3 Bronze Bushing
Self-lubricating bronze bearings are engineered for applications where external lubrication is impractical. Solid lubricants are compressed and molded directly into the bearing to guarantee a maintenance-free product. No additional lubrication is necessary.
CuSn6Zn6Pb3 Bronze Bushing | RG5 / CC491K Leaded Tin Bronze Bearings
CuSn6Zn6Pb3 Bronze Bushing | RG5 / CC491K Leaded Tin Bronze Bearings
High-quality CuSn6Zn6Pb3 bronze bushings (RG5/CC491K). Excellent machinability & corrosion resistance for pumps, valves, and general engineering. Custom sizes available. Request a quote from a leading industrial bearing manufacturer today!
High-quality CuSn6Zn6Pb3 bronze bushings (RG5/CC491K). Excellent machinability & corrosion resistance for pumps, valves, and general engineering. Custom sizes available. Request a quote from a leading industrial bearing manufacturer today!
CuSn6Zn6Pb3 Bronze Bushing: The Versatile Solution for Industrial Applications
Grade and Standard Equivalents
CuSn6Zn6Pb3 belongs to the Gunmetal series. The addition of zinc (Zn) and lead (Pb) significantly enhances its machinability and sealing performance, making it a superior choice for Custom Bronze Sleeve and Oilless Bearings where applicable.
International Equivalent Grades:
Technical Parameters (Typical Properties)
The material’s strength lies in its balance of “moderate hardness” and “excellent self-lubricating properties (provided by lead).” This makes it a prime choice for a reliable CuSn6Zn6Pb3 Bushing.
Physical / Mechanical Properties (As-Cast / Continuous Cast):
Suggested Searches: Copper， Brass， Bronze， Copper Nickel， Manganese， Aluminum
Application Areas and Recommended Bushing Types
CuSn6Zn6Pb3 Bronze Bushings for Heavy-Duty Industrial Applications
CuSn6Zn6Pb3 is suitable for medium to low load, medium to high speed operating conditions, with relatively broad lubrication requirements. As a leading Tin Bronze Bushing Manufacturer, we offer tailored solutions.
1. Pumps & Valves Components
•Application: Pump shaft sleeves, impeller sealing rings, valve guide bushings.
•Recommended Type: Straight Bushings.
•Reason: The material exhibits excellent density, resistance to corrosion from dilute sulfuric acid, dilute hydrochloric acid, and other neutral salts. The lead content ensures superior sealing performance, crucial for Pump and Valve Components.
2. General Engineering & Gearboxes
•Application: Worm wheel mating bushings, connecting rod bushings.
•Recommended Type: Oil Grooved Bushings.
•Reason: RG5 Bronze Bearing is easily machined to create complex oil grooves (e.g., figure-eight grooves, spiral grooves), ensuring continuous oil film distribution during operation.
3. Agricultural & Light Industry Equipment
•Application: Rocker arm bearings, pivot bushings.
•Recommended Type: Flanged Bushings.
•Reason: The flanged design can simultaneously withstand radial loads and axial positioning pressure.
4. Applications in Construction and Heavy Equipment
In heavy equipment such as excavators, bulldozers, and cranes, CuSn6Zn6Pb3 is primarily used for connecting rod bushings, pin shaft bushings, and steering joint bushings.
•Drive Wheel/Idler Bushings for Tracked Bulldozers: These areas endure extremely high radial impact loads and operate in high-dust environments. Typically, bimetal bushings are used, where a layer of CuSn6Zn6Pb3 alloy is sintered onto a low-carbon steel base. The steel base provides strength, while the bronze layer offers wear resistance and embedding capabilities, effectively resisting wear from dust particles on the shaft.
•Excavator Boom and Arm Pin Shaft Bushings: These components experience moderate operating frequencies but immense loads. Cast bronze bushings with oil grooves are commonly employed. Machining
“∞” shaped or double spiral oil grooves on the inner wall ensures sufficient grease storage to cope with vibration loads.
5. Industrial Machinery and Metallurgical Equipment
In general industrial applications, CuSn6Zn6Pb3 serves as a cost-effective anti-friction material, widely used in pumps, valves, and molds.
•Bushings for Electrostatic Precipitator Rapping Mechanisms: Operating in high-temperature, dusty, and difficult-to-maintain industrial environments, these applications necessitate Graphite Plugged Bronze Bushing (a type of Oilless Bearings). Holes are drilled in the CuSn6Zn6Pb3 matrix in a specific arrangement and filled with graphite and MoS₂ solid lubricants. During operation, a graphite film automatically coats the friction surface, achieving truly maintenance-free operation.
•Mold Guide Bushings for Injection Molding and Rubber Machinery: Due to the high frequency of mold opening and closing and the requirement for cleanliness, self-lubricating guide bushings are often used. This prevents grease overflow from contaminating products, while the high strength of CuSn6Zn6Pb3 ensures guiding accuracy.
6. Energy and Marine Engineering
•Ship Rudder System Bushings and Stern Tube Bushings: Exposed to seawater environments, CuSn6Zn6Pb3 (similar to C83600 Leaded Red Brass) offers natural dezincification resistance due to its zinc content. The corresponding types are typically integral centrifugal cast bushings, which enhance cavitation erosion resistance by increasing density.
Solutions for High-Pollution, Difficult-to-Maintain Environments
In dusty environments such as mining equipment and continuous casting and rolling machinery, traditional lubricating greases can turn into abrasive pastes, accelerating wear. The solution is to use Graphite Self-Lubricating CuSn6Zn6Pb3 Bushings. The solid dry film formed by the graphite filler on the working surface effectively isolates external dust. Since no additional grease is required, no sticky substances form on the surface, and even if dust particles enter, they are enveloped by the graphite film and expelled, significantly extending the overhaul cycle of the equipment.
Solutions for High-Temperature, Variable Load Environments
In areas where temperatures exceed 200°C, such as heat treatment furnace conveyor lines or furnace doors, the solution involves using integral CuSn6Zn6Pb3 Bushings with high-temperature specific solid lubricants. This leverages the property of CuSn6Zn6Pb3 not to undergo phase change below 350°C, combined with graphite plugs that have a higher coefficient of thermal expansion. The higher the temperature, the more graphite plugs expand and exude, providing stronger lubrication protection and perfectly solving the problem of lubricating oil carbonization due to heat.
Solutions for Space-Constrained, High-Frequency Vibration Environments
In some agricultural machinery and manual hydraulic vehicles, there is insufficient space for thick-walled cast bushings. The solution is to use Rolled Bimetal Bushings (Steel Backed CuSn6Zn6Pb3). Through cold rolling, the bushing thickness is controlled between 1.0mm-2.5mm. Due to the high-strength steel shell support on the outer layer, even thin walls can withstand significant impact stress. The rhombic oil reservoirs formed by the rolling process provide excellent grease retention, preventing dry burning of the bushing during vibration.
CuSn6Zn6Pb3 Tin Bronze Bushings – Durable, Wear-Resistant Bearings
CuSn6Zn6Pb3 tin bronze bearing sleeve
High-quality CuSn6Zn6Pb3 bronze bushings designed for demanding applications. Provides reliable performance, low friction, and long service life in industrial machinery.
Material Comparison: CuSn6Zn6Pb3 vs. Other Common Bronzes
When selecting a solution, it is crucial to compare CuSn6Zn6Pb3 with other common bronze alloys. As a dedicated Tin Bronze Bushing Manufacturer, we provide insights to help you make informed decisions.
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Comparison Item
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CuSn6Zn6Pb3 (RG5)
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CuSn12 (Tin Bronze)
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CuAl10Fe3Mn2 (Aluminum Bronze)
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Hardness
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Moderate 70HB
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Higher 90HB
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Very High 150HB
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Wear Resistance
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Good, suitable for general parts
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Excellent, highly wear-resistant
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Excellent, impact-resistant
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Machinability
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Excellent (high lead content)
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General
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More difficult
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Self-Lubrication
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Good (contains 3-5% lead)
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General
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Poor
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Cost
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Economical
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High
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Higher
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Comparison Conclusion:
•If your application requires ultra-high load capacity (e.g., heavy hydraulic presses), we recommend Aluminum Bronze.
•If the operating conditions involve high precision, heavy loads, and excellent lubrication, we recommend CuSn12.
•For general machinery maintenance, valve manufacturing, or budget-sensitive projects, CuSn6Zn6Pb3 is the most cost-effective
“all-rounder” solution, offering a perfect balance of performance and value.
Lubrication Scheme:
For a comprehensive understanding of lubrication strategies for CuSn6Zn6Pb3 Bushings, including both traditional grease groove designs and advanced solid lubricant solutions, please refer to Section V: Advanced Lubrication Solutions for CuSn6Zn6Pb3 Bushings.
Advanced Lubrication Solutions for CuSn6Zn6Pb3 Bushings
To maximize the performance and lifespan of CuSn6Zn6Pb3 Bushings across diverse industrial applications, strategic lubrication is paramount. As a leading Tin Bronze Bushing Manufacturer, we offer specialized solutions tailored to specific operational demands, integrating both traditional and advanced lubrication techniques.
1. CuSn6Zn6Pb3 Bronze Bushings with Solid Lubricant (Oilless Bearings)
For applications where conventional oil or grease lubrication is impractical, undesirable, or impossible, CuSn6Zn6Pb3 bronze bushings with solid lubricant provide an exceptional solution. These are a specialized form of Oilless Bearings, designed for maintenance-free operation and extended service life.
•Design Principle: Solid lubricant bushings are typically manufactured by embedding solid lubricants (such as graphite, MoS₂, or PTFE) into the CuSn6Zn6Pb3 matrix. This is achieved by drilling precise patterns of holes or grooves into the bronze and then pressing or casting the solid lubricant into these cavities. The lead content inherent in CC491K Material already contributes to self-lubrication, and the added solid lubricants further enhance this property.
•Key Advantages:
•Maintenance-Free Operation: Eliminates the need for external lubrication, reducing maintenance costs and downtime.
•High-Temperature Resistance: Solid lubricants can withstand much higher temperatures than conventional greases or oils, making them ideal for furnace applications, hot rolling mills, and other high-temperature environments.
•Contamination Resistance: Impervious to dust, dirt, and corrosive agents, preventing abrasive wear in harsh environments like mining, cement plants, and electrostatic precipitators.
•Clean Operation: No grease leakage, crucial for applications in food processing, textile machinery, and clean rooms where contamination is a concern.
•Extended Lifespan: Provides a continuous lubricating film, significantly extending the service life of the bushing and mating shaft.
•Typical Applications:
•High-Temperature Furnaces: Conveyor systems, furnace doors.
•Mining Equipment: Conveyors, crushers, excavators in dusty conditions.
•Food & Beverage Processing: Where cleanliness and non-contamination are critical.
•Submerged Applications: In water or chemical solutions where oil lubrication is washed away.
•Aerospace & Automotive: For critical components requiring long-term reliability without maintenance.
2. CuSn6Zn6Pb3 Bronze Bushings with Grease Groove
For applications requiring continuous or intermittent external lubrication, CuSn6Zn6Pb3 bronze bushings with grease groove are the preferred choice. The integration of precisely designed grease grooves ensures optimal lubricant distribution, enhancing performance and extending the life of the RG5 Bronze Bearing.
•Design Principle: Grease grooves are channels machined into the bearing surface of the Custom Bronze Sleeve. These grooves serve to distribute grease or oil evenly across the entire contact area between the bushing and the shaft. The specific pattern of the grooves (e.g., straight, circular, figure-eight, spiral) is chosen based on the application’s rotational direction, load distribution, and lubrication frequency.
•Key Advantages:
•Optimized Lubricant Distribution: Ensures that lubricant reaches all critical areas, preventing localized dry spots and reducing wear.
•Enhanced Heat Dissipation: Lubricant flow through the grooves helps to carry away heat generated by friction, maintaining stable operating temperatures.
•Improved Load-Bearing Capacity: A consistent lubricant film can better support loads, especially under moderate to high-speed conditions.
•Particle Flushing: The flow of fresh lubricant helps to flush out wear particles and contaminants, keeping the bearing clean.
•Versatility: Adaptable to a wide range of operating conditions and lubrication schedules, from manual greasing to automated centralized lubrication systems.
•Common Grease Groove Patterns:
•Straight Grooves: Simple, often used for oscillating or slow-rotating movements.
•Circular Grooves: Effective for distributing lubricant around the circumference.
•Figure-Eight (∞) Grooves: Excellent for bi-directional rotation and ensuring comprehensive coverage.
•Spiral Grooves: Ideal for unidirectional rotation, actively pumping lubricant across the bearing surface.
•Typical Applications:
•General Machinery: Gearboxes, electric motors, agricultural machinery.
•Heavy Equipment: Connecting rods, pivot points, where regular greasing is part of maintenance.
•Pump and Valve Components: Ensuring smooth operation and sealing.
•Industrial Bronze Casting: Where the inherent strength of the material is combined with external lubrication for demanding roles.
By offering both CuSn6Zn6Pb3 bronze bushings with solid lubricant and CuSn6Zn6Pb3 bronze bushings with grease groove, we provide comprehensive solutions that cater to the specific needs of various industries, ensuring optimal performance, reduced maintenance, and extended operational life for your equipment. Whether you require Oilless Bearings for challenging environments or precisely engineered Custom Bronze Sleeve with grease grooves for conventional lubrication, our expertise as a Tin Bronze Bushing Manufacturer guarantees a reliable product.
Custom Manufacturing to Your Drawings
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