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Bronze Plain Bearing – Maintenance – Free
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A bronze plain bearing is a type of mechanical component used to support rotating or sliding shafts within machinery. Unlike other types of bearings that require regular maintenance and lubrication, bronze plain bearings are designed to be maintenance-free. This means that they are engineered to operate efficiently and effectively without the need for constant upkeep.
Maintenance Solutions For Bronze Plain Bearing
Explore the maintenance-free bronze plain-bearing product range offered by BronzeOilless.com. Contact us today to learn more about our unique design solutions for complex challenges and our unmatched level of customer service. Our custom bearings are meticulously engineered to deliver maximum capacity and reliability.
Our bearings require minimal maintenance, but routine checks are crucial to ensure their continued performance. Keep an eye out for wear, misalignment, and other signs of potential issues. Additionally, maintain the recommended operating conditions and cleanliness for optimal results.
Discover the convenience and efficiency of our maintenance-free bronze plain bearings. Contact us now to explore how our products can meet your needs.
Bronze Plain Bearing Maintenance: Ensuring Longevity and Efficiency
Types of Bronze Plain Bearings
Bronze Plain Bearings come in various types, each tailored to specific applications. Two common types are solid lubrication and self-lubricating bearings.
- Solid Lubrication Bronze Plain Bearings: These bearings are crafted from metal materials, typically infused with graphite as a solid lubricant through a specialized process. The uniform voids within the bearing allow it to contain a lubricant, enabling it to achieve low friction coefficients and impressive wear resistance even in oil-free conditions. Solid lubrication bearings find extensive use in metallurgical machinery, steel wheel rollers, ship gas turbines, and similar applications due to their exceptional durability and efficiency.
- Sintered bronze bearings are characterized by being self-lubricating and maintenance-free. The sintered bronze bearings are made of porous bronze or iron and are usually filled with oil. lubricant, enabling it to achieve low friction coefficients and impressive wear resistance even in oil-free conditions. Solid lubrication bearings find extensive use in metallurgical machinery, steel wheel rollers, ship gas turbines, and similar applications due to their exceptional durability and efficiency.
Advantages of Bronze Plain Bearings
Bronze Plain Bearings, especially self-lubricating and solid lubrication types, offer several advantages that make them a popular choice in various applications:
- Long Life Cycle: Properly maintained bronze bearings can offer longer operational life, sometimes up to three times longer than traditional bearings.
- Cost Savings: The elimination of external lubrication systems and reduced maintenance needs lead to significant cost savings over the bearing’s lifespan.
- Easy Installation: Bronze plain bearings are designed for easy installation, minimizing downtime during replacement or maintenance.
- Enhanced Performance: These bearings can accommodate increased shaft tolerances, improving overall system performance.
Importance of Maintenance
Effective maintenance of Bronze Plain Bearings not only ensures seamless operation but also extends the bearing’s lifespan, reducing downtime and operational costs. Here are some key maintenance considerations:
- Lubrication System Maintenance: A well-functioning lubrication system is essential for bearing longevity. Regular inspections should be conducted to detect leaks and other issues that could lead to more significant problems over time.
- Environmental Considerations: The operating environment significantly impacts a bearing’s maintenance needs. Bearings operating in dusty or gritty environments can suffer from premature wear if not adequately protected. Solid lubrication bearings can mitigate the entry of particles, extending the bearing’s life in challenging conditions.
- Regular inspections of bearings can identify early signs of wear, damage, or misalignment.
- Develop a replacement strategy based on the bearing’s expected lifespan and usage conditions.
Types of Bronze Alloys Used
Some common bronze alloys used include:
- Phosphor Bronze: This alloy comprises copper with a small percentage of tin and phosphorus. It’s recognized for its excellent strength, wear resistance, and dimensional stability. Phosphor bronze bearings are often used in applications requiring high load-bearing capacity and resistance to fatigue.
- Aluminum Bronze: Combining copper with aluminum creates aluminum bronze, a robust alloy with exceptional corrosion resistance, especially in marine environments. These bearings are employed in scenarios where resistance to corrosion, abrasion, and high temperatures is crucial.
- Manganese Bronze: Manganese bronze is a blend of copper, tin, and a notable amount of manganese. It’s valued for its toughness, durability, and resistance to wear and abrasion. Bearings made from this alloy are commonly used in heavy-duty applications.
Self-Lubricated Technology
Our bronze plain bearing range includes maintenance-free oilless bronze bushings designed for high loads and extended lifetimes. These bushings are tailored to meet specific requirements outlined in custom drawings as well as industry standards such as VDI/BAK and NAAMS.
Bronze plain bearings function by incorporating lubricant within the sliding layer of the bearing. This lubricant can take the form of either a liquid (such as oil) or a solid (like graphite, MoS2, or lead), based on the specific demands of the application, including the operating temperature.
During the bearing’s operation, the lubricant is gradually released through pores present in the sliding layer, effectively lubricating the bearing surface.
To ensure optimal performance of your machinery, it’s essential to maintain your lubrication system in excellent condition. Additionally, periodic inspections of bearings should be conducted to identify and rectify leaks before they escalate into more significant issues. By regularly upkeeping the lubrication and bearing system, many common problems can be averted. Here’s a checklist to help you establish a lubrication system maintenance regimen that will keep your machinery running smoothly:
- Regularly inspect the lubrication system for any signs of leaks or malfunctions.
- Monitor lubricant levels and quality to ensure they meet the specified standards.
- Clean the lubrication system components and replenish lubricants as needed.
- Verify that all lubrication points are receiving adequate lubrication.
- Replace any worn-out or damaged parts promptly.
- Implement a schedule for lubrication system maintenance tasks and adhere to it consistently.
- Train personnel responsible for maintenance on proper procedures and techniques.
- Keep accurate records of maintenance activities, including lubricant changes and repairs.
- Collaborate with manufacturers or experts if any complex issues arise.
- By adhering to these guidelines and maintaining a proactive approach to lubrication system maintenance, you can uphold the efficiency and longevity of your machinery while avoiding preventable complications.
Finishing Parts Main Base Alloy
| Performance. & Chemical Compositions | CuZn25Al6FeMn3 High Brass | CuZn25Al6FeMn3 Special Brass | CuSn5Pb5Zn5 Tin Bronze | CuAl10Ni aluminium bronze | CuSn12 Tin bronze | Cast Iron HT250 EB00 |
| Cu% | 65 | 65 | 85 | 80 | 88 | |
| Sn% | 5 | 12 | ||||
| Pb% | 5 | |||||
| Zn% | 25 | 25 | 5 | |||
| Ni% | 5 | |||||
| Al% | 6 | 6 | 10 | |||
| Fe% | 5 | |||||
| Mn% | 4 | 4 | ||||
| Dengity g/cm 3 | 8.0 | 8.0 | 8.8 | 8.3 | 8.8 | 7.3 |
| Hardness | >210 | >180 | >70 | >150 | >80 | >160 |
| Tensile Strength | >750 | >550 | >200 | >500 | >360 | >250 |
| Elongation | >12 | >12 | 15 | >10 | >8 | |
| Coeicient of linear expansion | 1.9·10 -5 /℃ | 1.9·10 -5 /℃ | 1.8·10 -5 /℃ | 1.6·10 -5 /℃ | 1.8·10 -5 /℃ | 1.0·10 -5 /℃ |
| Limit Temp. | 300~400 | 300~400 | 400 | 400 | 400 | 400 |
| Max. Load N/mm 2 | 100 | 80 | 60 | 50 | 70 | 10 |
| Max. Speed m/min | 15 | 15 | 10 | 20 | 10 | 15 |
| Max. PV N/mm2·m/min | 200 | 200 | 200 | 200 | 200 | 40 |
| 400N/mm2 | <0.01 | <0.01 | <0.05 | <0.04 | <0.05 | <0.015 |
Friction of coe. Oil 0.03; Dry 0.16
Custom Size Options, machining bronze bushings and a supplier of solid bronze oilless bushes and plate delivered on time and on budget.
Oilless Bushing Alloy International Code
| Chinese Code GB1776-87 | International counterparts | Applications | |||
| International ISO 1338 | Japan Jis | (USA) ASTM (UNS) | German DIN | ||
| CuZn25AI6FeMn3 | CuZn25AI6FeMn3 | H5102 CAC304 | B30-92 C86300 | DIN1709 G-CuZn25A/2.0598 | High-load, low speed, general use |
| CuZn25AI6FeMn3 | CuZn25AI6FeMn3 | H3102 CAC304 | B30-92 C86300 | DIN1709 G-CuZn25A/2.0598 | Super high load, low-speed, high duty |
| CuAI10Fe3 | CuAI10Fe3 | H5114 CAC703 | B30-92 95800 | DIN1714 GB-CuAI10NI/2.1096 | Medium load, medium-speed, general use |
| CuSn5Pb5Zn5 | QSn5-5-5 | H5111 CAC406 | B30-92 C83600 | DIN1705 G-Cu5n5ZnPb/2.1096 | Medium load, medium-speed |
| DB5675-85 HT250 | Fe250 | ASTM class40 | low-load, low-speed | ||
Bearing Maintenance-free | Help Ensure A Longer Lifespan
Handle with care
Bearings are delicate enough to get damaged quickly. As such, it is very important that they are stored horizontally in a clean and dry environment with their packaging intact. Do not expose them to any airborne contaminants, as even a tiny speck of dirt can cause premature failure. Never hammer or pound them, or apply a direct force on it or its outer ring, which can cause damage to the rolling elements, resulting in misalignment. The most important thing to remember is to never remove bearings from their packaging until ready for use.
Check the bearing housing and shaft
Whenever a bearing is used for mounting, it is crucial that the housing and shaft are inspected for any sort of physical condition or damage. Always use a soft cloth to wipe the surfaces clean and make sure any nicks and burrs are removed.
Mount the bearings correctly
The method used to mount the bearings depends on the type of bearing. For example, bearings with cylindrical bores are generally mounted through a press-fit method. Bearings with tapered bores can be mounted directly on tapered or cylindrical shafts with the use of tapered sleeves. However, pressure should be applied only with a press fit because without it the raceways can become damaged.
- Avoid preheating or overheating
The maximum heating allowed on the bearings depends on the heat treatment of the material. If they are heated above the permitted limit, they can permanently deform or soften the bearing steel, lowering load carrying capacity and resulting in a failure. Always heat the bearings using induction heaters, and never with an open flame.
Always use the proper tools
Specialized tools like bearing pullers, bearing fitting tool kits, oil injector kits, hydraulic nuts, or induction heaters should be used in the mounting and dismounting processes. These tools ensure the smooth process of mounting or dismounting, in order to minimize the risk of damage.
Avoid corrosion
It is crucial that you should not expose bearings to the presence of water for a long time, as it will lead to rust and corrosion. It will also cause the premature failure of the bearings, which can affect the performance and productivity of the machine. As a result, it will increase your operating costs. Also, make sure to wear gloves when handling bearings. Perspiration can also lead to rust and corrosion.
Proper lubrication
If you want to have a prolonged life of your bearings, it is crucial that they should be properly lubricated. The correct lubricant depends on the environmental conditions, temperature, speed, and load. In this case, it is advisable that you should follow your manufacturer’s recommendations.
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