Precision Engineering
Advanced production and quality control processes enable us to meet tight tolerances and exact specifications, ensuring superior accuracy and consistency.
Client Centric Approach
We adapt our manufacturing processes to align with client requirements, offering tailored solutions for a wide range of applications.
Timely Delivery
Committed to meeting tight deadlines without compromising on quality, we ensure reliable and efficient production timelines.
Versatility
Capable of handling both small-scale and high-volume orders, we provide seamless support for projects of any size.
Specializing in Solid plain bearings
Solid plain bearings, or bushings, are mechanical components that enable smooth, low-friction movement between two parts. Unlike rolling-element bearings, plain bearings rely on sliding friction and are preferred in applications where simplicity, cost-effectiveness, and durability are essential.
Solid Bronze Bearings Manufacturing & Production
Bronze & self-lubricating bronze customized to clients’ drawings.
Solid plain bearings are a reliable and versatile solution for various applications, effectively balancing performance, durability, and cost. They are made from a single material, often self-lubricating or compatible with external lubrication. Common materials include bronze, which offers excellent wear resistance and load capacity with double loop grease grooves.
Solid Plain Bearings: Design and Lubrication
Solid plain bearings are usually cylindrical with either flanged or non-flanged designs based on the application. Their smooth inner surfaces facilitate sliding motion. Some are self-lubricating, utilizing materials such as graphite or PTFE, while others need external lubrication to minimize friction and wear. They can support radial, axial, or combined loads, depending on their design and materials.
Advantages of Solid Plain Bearings:
- Simple Design: Fewer moving parts compared to rolling-element bearings.
- Cost-Effective: Generally cheaper to manufacture and maintain.
- Compact: Space-saving design, especially in tight installations.
- Quiet Operation: Sliding motion produces less noise than rolling-element bearings.
- Durability: Can withstand harsh environments, such as high temperatures or corrosive conditions.
Self Lubricating Bronze Bearings
The series features maintenance-free self-lubricating bronze bearings made with solid lubricant materials like graphite inserts. They are ideal for applications where manual lubrication is challenging or where oil and grease cannot be used, providing excellent lubrication under heavy loads and low speed conditions.
Bronze Bearings
Our range includes traditional bronze bearings that necessitate lubrication in friction areas. Bronze remains the primary material for manufacturing friction bearings, and the developed alloys, along with a diverse array of lubricants, enable its use across various operating conditions.
Custom Solid Plain bearings
Custom bearings with double loop grease grooves are specialized components that enhance lubrication distribution and improve performance in demanding applications. Solid bronze bearings excel in severe and contaminated conditions, making them ideal for a wide range of demanding applications.
Viiplus Solid Bronze Bearings: Unveiling the Strength of Phosphor Bronze and Gun Metal Bushings
Solid bronze bearings, particularly those crafted from phosphor bronze and gun metal, have long been celebrated for their ability to handle rigorous industrial demands. With outstanding wear resistance, impressive strength, and reliable performance under heavy loads, these materials are the backbone of countless applications. Here’s a closer look at what makes them indispensable in industry:
Phosphor Bronze Bearings: Precision and Durability
Phosphor bronze, a specialized copper alloy containing copper, tin, and phosphorus, offers a balanced mix of mechanical strength, corrosion resistance, and wear reduction. This material’s unique properties make it a top choice for bearings and bushings in demanding conditions.
- Key Attributes:
- Exceptional Strength: Phosphor bronze maintains its structural integrity under heavy loads, providing reliability in critical operations.
- High Wear Resistance: The phosphorus content significantly reduces friction and wear, ensuring a longer lifespan.
- Corrosion Resistance: Its ability to resist damage from moisture and chemicals makes it suitable for marine and wet environments.
- Low Friction Performance: A naturally low coefficient of friction minimizes wear, further extending component life.
- Maintenance-Free Options: Certain grades incorporate self-lubricating features, eliminating the need for frequent upkeep.
- Common Uses:
- Bearings and Bushings: Ideal for rotating and sliding applications that demand longevity and smooth operation.
- Electrical Components: Valued for its excellent conductivity and resistance to environmental damage, making it perfect for connectors and terminals.
- Industrial Machinery: Found in gears, valves, and hydraulic systems, it ensures reliability in high-stress environments.
Gun Metal Bushings: Robust and Versatile
Gun metal, often referred to as red brass, combines copper, tin, and zinc to deliver exceptional strength and durability. Known for its high load capacity and resilience, it’s a popular choice in heavy-duty applications.
- Key Attributes:
- High Strength and Plasticity: Gun metal maintains form and function under heavy loads without cracking.
- Anti-Friction Qualities: Its smooth surface characteristics reduce the need for constant lubrication.
- Corrosion Resistance: Like phosphor bronze, gun metal thrives in environments where moisture and other corrosive elements are a concern.
- Load-Bearing Excellence: With a high capacity for heavy loads, it’s well-suited for demanding industrial tasks.
- Common Uses:
- Heavy Machinery Components: Essential in high-load equipment and automotive parts.
- Marine Hardware: Chosen for its durability and resistance to corrosive seawater conditions.
- High-Speed Applications: Frequently employed in sintered bronze bushes, handling speeds of up to 18,000 rpm and pressures of up to 250 N/mm².
Making the Choice: Phosphor Bronze or Gun Metal?
| Property | Phosphor Bronze | Gun Metal |
|---|---|---|
| Composition | Copper, Tin, Phosphorus | Copper, Tin, Zinc |
| Strength | High tensile strength (up to 550 MPa) | High strength and excellent plasticity |
| Wear Resistance | Excellent | Very good |
| Corrosion Resistance | Excellent | Very good |
| Key Applications | Bearings, electrical components, gears | Heavy machinery, marine equipment |
Conclusion: Two Standout Options for Industrial Success
Phosphor bronze and gun metal each shine in their respective domains. Phosphor bronze stands out for precision and low-friction performance, making it an excellent choice for delicate and high-performance components. Gun metal, on the other hand, excels under heavy loads and in rugged environments, delivering reliability and strength. When selecting the right material, consider the specific demands of the application—such as load, speed, and environmental exposure—to ensure the best performance and longevity.
Applications of solid bronze bearings
Solid bronze bearings are ideal for applications involving axial and radial oscillatory movements. Common applications are:
Offshore
Dredging industry
Mechanical engineering
Elevators
Upgrade to Solid Plain Bearings Bushings today and experience the difference in performance and reliability. Your machinery deserves the best – and so do you!
🛒 Order Now and Enjoy:
- Fast Shipping 🚚
- Competitive Pricing 💰
- Expert Support 🛠️
🔧 Built to Last. Engineered to Perform. 🔧 Your Trusted Partner in Precision Engineering.
Materials
Solid bronze bearings are typically made from CuSn7Zn4Pb7 continuously cast bronze, which consists of 85% copper. This alloy is known for its excellent sliding properties. All surfaces of the plain bearing are precision-machined for optimal performance.
In addition to the standard material, various other alloys are available, with the most common being CuAl10Ni, CuSn10, and CuSn12, each offering unique properties for specific applications.
Lubrication
While solid bronze bearings are generally lubricated with grease, oil can be used in specialized applications where required. A high-quality lubricant is essential to reduce friction and wear by creating a lubricating film between the bearing and the shaft. In applications subject to heavy contamination, we recommend sealing the bearing to protect both the bearing and the lubricant from external elements.
For all solid bronze bearings with an inner diameter of 14 mm or greater, an axial lubrication groove is provided as standard.
Lubrication Groove Options
(You can expand this section depending on the specific groove types and options available for your bearings.)
Material Comparative Characteristics: Solid Plain Bearing Materials Guide
When it comes to selecting the right material for solid plain bearings, understanding the properties and characteristics of different alloys is crucial. Solid plain bearings, also known as bushings, are used to reduce friction between moving parts and are often made from self-lubricating or low-friction materials. In this blog post, we’ll compare the characteristics of seven commonly used bronze alloys for solid plain bearings: C51000, C54400, C63000, C86300, C93200, C95400, and C95500.
1. C51000 (Phosphor Bronze 5% A)
Key Characteristics:
- Composition: Copper (Cu) with 4.2-5.8% Tin (Sn) and small amounts of Phosphorus (P).
- Machinability: 20 (fair machinability).
- Density: 0.320 lb/in³.
- Typical Uses: Electrical connectors, springs, bushings, and diaphragms.
- Mechanical Properties: Tensile strength ranges from 55-70 ksi depending on temper.
- Advantages: Good wear resistance, excellent for electrical applications, and suitable for high-load, low-speed applications.
Solid Plain Bearing Uesed For: Electrical components, industrial machinery, and bridge bearing plates.
2. C54400 (Phosphor Bronze B2)
Key Characteristics:
- Composition: Copper (Cu) with 3.5-4.5% Tin (Sn) and 3-4% Lead (Pb).
- Machinability: 80 (excellent machinability).
- Density: 0.320 lb/in³.
- Typical Uses: Bushings, gears, thrust washers, and valve parts.
- Mechanical Properties: Tensile strength ranges from 50-60 ksi.
- Advantages: High machinability, good wear resistance, and excellent for low-friction applications.
Solid Plain Bearing For: Industrial machinery, automotive components, and low-speed bearings.
3. C63000 (Aluminum Bronze)
Key Characteristics:
- Composition: Copper (Cu) with 9-11% Aluminum (Al) and 4-5.5% Nickel (Ni).
- Machinability: 30 (fair machinability).
- Density: 0.274 lb/in³.
- Typical Uses: Valve seats, pump parts, gears, and marine hardware.
- Mechanical Properties: Tensile strength ranges from 85-100 ksi.
- Advantages: High strength, excellent corrosion resistance, and good for high-temperature applications.
Solid Plain Bearing For: Marine, and heavy-duty industrial applications.
4. C86300 (Manganese Bronze)
Key Characteristics:
- Composition: Copper (Cu) with 22-28% Zinc (Zn), 5-7.5% Aluminum (Al), and 2.5-5% Manganese (Mn).
- Machinability: 8 (poor machinability).
- Density: 0.283 lb/in³.
- Typical Uses: High-strength machine parts, gears, and marine hardware.
- Mechanical Properties: Tensile strength of 110 ksi.
- Advantages: High strength and wear resistance, suitable for heavy-load applications.
Solid Plain Bearing For: Marine hardware, heavy machinery, and slow-speed, high-load bearings.
5. C93200 (Leaded Tin Bronze)
Key Characteristics:
- Composition: Copper (Cu) with 6.3-7.5% Tin (Sn) and 6-8% Lead (Pb).
- Machinability: 70 (good machinability).
- Density: 0.322 lb/in³.
- Typical Uses: Bushings, thrust washers, and bearings for cranes and rolling mills.
- Mechanical Properties: Tensile strength of 35 ksi.
- Advantages: Excellent wear resistance, good for low-speed, high-load applications.
Solid Plain Bearing For: Automotive fittings, industrial bearings, and heavy machinery.
6. C95400 (Aluminum Bronze)
Key Characteristics:
- Composition: Copper (Cu) with 10-11.5% Aluminum (Al) and 3-5% Iron (Fe).
- Machinability: 60 (good machinability).
- Density: 0.269 lb/in³.
- Typical Uses: Gears, valve seats, and landing gear parts.
- Mechanical Properties: Tensile strength of 85 ksi.
- Advantages: High strength, excellent wear resistance, and good for high-temperature applications.
Solid Plain Bearing For: Heavy-duty industrial applications.
7. C95500 (Nickel Aluminum Bronze)
Key Characteristics:
- Composition: Copper (Cu) with 10-11.5% Aluminum (Al), 3-5.5% Nickel (Ni), and 3-5% Iron (Fe).
- Machinability: 50 (fair machinability).
- Density: 0.272 lb/in³.
- Typical Uses: Valve components, gears, and marine hardware.
- Mechanical Properties: Tensile strength of 95 ksi.
- Advantages: High strength, excellent corrosion resistance, and good for high-stress applications.
Solid Plain Bearing Used For: Marine,and high-stress industrial applications.
Comparative Summary
| Alloy | Machinability | Tensile Strength (ksi) | Density (lb/in³) | Key Applications |
|---|---|---|---|---|
| C51000 | 20 | 55-70 | 0.320 | Electrical, Industrial |
| C54400 | 80 | 50-60 | 0.320 | Bushings, gears |
| C63000 | 30 | 85-100 | 0.274 | Marine, aerospace |
| C86300 | 8 | 110 | 0.283 | Marine, heavy machinery |
| C93200 | 70 | 35 | 0.322 | Automotive, bearings |
| C95400 | 60 | 85 | 0.269 | Industrial |
| C95500 | 50 | 95 | 0.272 | Marine, high-stress |
Solid Plain Bearing
Choosing the right material for solid plain bearings depends on the specific application requirements, including load capacity, speed, environmental conditions, and machinability.
- C51000 and C54400 are excellent for electrical and low-speed industrial applications.
- C63000 and C95500 are ideal for high-strength, corrosion-resistant environments like marine and aerospace.
- C86300 is perfect for heavy-load, slow-speed applications.
- C93200 is a great choice for automotive and general-purpose bearings.
- C95400 offers a balance of strength and wear resistance for high-stress industrial applications.
By understanding the unique properties of each alloy, you can make an informed decision to ensure optimal performance and longevity for your solid plain bearings.
For more detailed information on these materials, feel free to reach out to viiplus ervices or consult their comprehensive material guides. Happy engineering!
Key Specifications:
- Material:
- Bronze, Cast, 660: This refers to C93200 (SAE 660) bearing bronze, a high-strength alloy known for its excellent wear resistance, load capacity, and compatibility with steel shafts. It is commonly used in bushings and bearings.
- Grease Grooves:
- Double Loop Grease Grooves: These are machined grooves in the bearing’s inner surface that form two continuous loops. They help distribute lubricant evenly across the bearing surface, reducing friction and wear.
- Dimensions:
- Standard to Bushing: The dimensions (ID, OD, length) will match standard bushing sizes, ensuring compatibility with existing machinery or designs.
- Manufacturer Out Both Ends:
- This indicates that the bearing is machined or finished on both ends, ensuring precise dimensions and a clean, professional appearance.
Benefits of Double Loop Grease Grooves:
- Improved Lubrication: Ensures even distribution of grease across the bearing surface, reducing friction and heat buildup.
- Extended Bearing Life: Proper lubrication minimizes wear and extends the lifespan of the bearing.
- Reduced Maintenance: Efficient grease distribution reduces the frequency of relubrication.
Applications:
Custom bearings with double loop grease grooves are ideal for:
- Heavy machinery and equipment
- Automotive and truck components
- Industrial pumps and compressors
- Construction and agricultural equipment
- Marine and offshore applications
Manufacturing Process:
- Casting: The bronze is cast into a rough shape close to the final dimensions.
- Machining: The bearing is machined to precise dimensions, including the double loop grease grooves.
- Finishing: The bearing is finished on both ends to ensure smooth edges and proper fit.
- Quality Control: The final product is inspected for dimensional accuracy and surface finish.
Considerations for Custom Bearings:
- Load and Speed Requirements: Ensure the bearing can handle the expected loads and rotational speeds.
- Shaft Material: Verify compatibility between the bronze bearing and the shaft material (e.g., steel).
- Operating Environment: Consider factors like temperature, moisture, and exposure to contaminants.
- Lubrication Type: Specify the type of grease or lubricant to be used for optimal performance.
Example Dimensions (Standard Bushing):
| Parameter | Value |
|---|---|
| Inner Diameter (ID) | Custom |
| Outer Diameter (OD) | Custom |
| Length | Custom |
| Groove Width | Typically 2-3mm |
| Groove Depth | Typically 1-2mm |
Why Choose Custom Bearings?
- Tailored to specific application requirements.
- Enhanced performance with features like double loop grease grooves.
- High-quality materials like SAE 660 bronze for durability and reliability.
If you need a quote or further details, provide the specific dimensions (ID, OD, length) and any additional requirements (e.g., tolerances, surface finish). Manufacturers can then produce the bearings to your exact specifications.
1. Bronze Alloys
Bronze is one of the most widely used materials for solid plain bearings due to its excellent wear resistance, strength, and compatibility with various lubricants.
- Common Types:
- Phosphor Bronze (e.g., SAE 841): High strength, good wear resistance, and corrosion resistance.
- Aluminum Bronze: Higher load capacity and better corrosion resistance.
- Lead Bronze: Improved embeddability and conformability.
- Applications: High-load, low-speed applications such as automotive, industrial machinery, and construction equipment.
2. Polymer-Based Materials
Polymer bearings are lightweight, corrosion-resistant, and often self-lubricating, making them suitable for applications where traditional lubrication is challenging.
- Common Types:
- PTFE (Polytetrafluoroethylene): Extremely low friction, excellent chemical resistance, and self-lubricating.
- Acetal (POM): Low friction, good wear resistance, and dimensional stability.
- Applications: Food processing, medical devices, and applications requiring dry running or minimal maintenance.
3. Composite Materials
Composite bearings combine multiple materials to achieve a balance of properties, such as low friction, high wear resistance, and self-lubrication.
- Common Types:
- PTFE-Based Composites: PTFE with fillers like bronze, glass, or carbon for improved strength and wear resistance.
- Metal-Polymer Composites: A metal backing with a polymer lining for high load capacity and low friction.
- Applications: Automotive, and industrial machinery.
4. Graphite and Bronze Bearings Materials
Graphite and bronze bearings are self-lubricating and can operate in high-temperature and corrosive environments.
- Properties:
- Self-lubricating.
- High thermal stability.
- Good chemical resistance.
- Applications: Pumps, seals, and high-temperature environments.
5. Stainless Steel
Stainless steel bearings are used in corrosive environments or where hygiene is critical.
- Properties:
- High corrosion resistance.
- Good mechanical strength.
- Applications: Food processing, medical devices, and marine environments.
Key Considerations for Material Selection
When choosing a material for solid plain bearings, consider the following factors:
- Load Capacity: High-load applications may require stronger materials like bronze or composites.
- Speed: High-speed applications may benefit from materials with low friction and good heat dissipation.
- Environment: Consider temperature, humidity, and exposure to chemicals or corrosive substances.
- Lubrication: Determine if the application requires self-lubricating materials or external lubrication.
- Cost: Balance performance requirements with budget constraints.
Summary Table of Material Properties
| Material | Load Capacity | Speed | Self-Lubricating | Corrosion Resistance | Temperature Range |
| Bronze Alloys | High | Medium | No | Moderate | Moderate |
| PTFE | Low | High | Yes | Excellent | Moderate |
| Stainless Steel | High | Medium | No | Excellent | Moderate |
By carefully evaluating the application requirements and material properties, you can select the most suitable solid plain bearing material for your needs.
Bronze: The Optimal Material for Friction Bearings
