Oil Free Bush
Oil Free Bush
Say goodbye to the hassle of frequent lubrication maintenance. Our self-lubricating technology ensures smooth operation and reduces wear and tear, extending the lifespan of your equipment. Experience uninterrupted productivity and cost savings as you bid farewell to the need for messy lubricants and time-consuming upkeep.
Manufacturing on Demand, alternative solutions
Oil Free Bush
Oil Free Bush Material: High Strength Brass / Copper Alloy + Solid Lubricant
The #500SP material, recognized for its high-strength brass or copper alloy composition with an integrated solid lubricant, is frequently utilized in crafting oil-free bushings. These bushings are engineered to function without the necessity for external oil or lubrication, rendering them apt for a myriad of industrial uses. The robust brass or copper alloy ensures durability and resistance against wear, while the inclusion of solid lubricants like graphite and PTFE imbues them with self-lubricating qualities. Such features render these bushings perfect for scenarios involving high loads, challenging operational conditions, and settings where traditional lubricants might fail. They find applications across a diverse array of machinery and equipment, ranging from cargo handling and press tools to turbines, hoisting devices, industrial machines, automotive components, precision instruments, and even household appliances. Thanks to their self-lubricating nature, these bushings are virtually maintenance-free, capable of performing under extreme temperatures, submerged environments, or within clean-room conditions where avoiding lubricant contamination is crucial. Available in various designs including cylindrical and flanged bearings, thrust washers, and plates, they meet the specific demands of different applications.
Oil Free Bush, Bronze Alloys Material: #500SP
(High Strength Brass / Copper Alloy + Solid Lubricant), Need A Quote? Start the process and Contact us today!
Shop For Oil-Free Bushing & Self-lubricated Graphite Parts At Bronzelube.Com, Supply High-Strength Brass Bearings To Your Specifications.
Partner with VIIPLUS
Our cast bronze bushings and thrust washers, known for their robust strength and durability, significantly extend the lifespan and improve the performance of oil and gas equipment, industrial machinery, and other essential high-wear systems. To discover more about our diverse product range and find the ideal solution for your specific needs, please reach out to us today.
Self-Lubricating Cast Bronze Bushings with Solid Lubricant Inserts
Self-lubricating cast bronze bushings with solid lubricant inserts are highly efficient and maintenance-free solutions for various demanding applications. These bushings are specifically designed to perform under challenging conditions, including environments exposed to water, oil, or grease. Below are the key details and specifications of these bushings:
Oil-free Bushing Composition and Structure
- Base Material (Bronze Alloy):
- ASTM B271 C86300 (Manganese Bronze):
- Used for bearings with an inner diameter (ID) greater than 180 mm.
- ASTM B505 C86300 (Manganese Bronze):
- Used for bearings with an inner diameter (ID) less than 180 mm.
- ASTM B271 C86300 (Manganese Bronze):
Oil-Free Bush Key Features
- Self-Lubricating:
- The bushings contain solid lubricant plugs composed of graphite, embedded in the bronze material. These plugs provide continuous lubrication, eliminating the need for external lubrication and maintenance.
- Running-In Film:
- The sliding surface is coated with a running-in film of 15 to 20 µm. This film ensures the transference of solid lubricant to the mating surface during initial operations, facilitating a smooth start-up and optimal performance from the onset.
- Solid Lubricant Inserts:
- The graphite inserts are distributed according to the “macro distribution principle,” tailored to the specific type of movement (linear, rotational) the bearing will undergo. This pattern ensures efficient lubrication throughout the bearing’s life.
Oil-Free Bush, Mechanical Properties of Support Bronze Alloy (ASTM B271-C86300) Oil-Free Bearings
- High Wear Resistance:
- The bronze alloy is highly resistant to wear, making it suitable for high-load and high-speed applications.
- Corrosion Resistance:
- The material is resistant to corrosion, suitable for use in harsh environments, including exposure to water, oil, and grease.
- Static and Dynamic Load Capacity:
- Designed to withstand both high static and dynamic loads, ensuring reliable performance under varying conditions.
- Stable Coefficient of Friction:
- Provides a consistent and stable coefficient of friction, reducing wear and enhancing the longevity of both the bearing and mating surfaces.
- No “Stick-Slip” Effect:
- Ensures smooth and continuous movement without the undesirable “stick-slip” effect, which can cause jerky or uneven motion.
Oil-Free Bush Applications
- Water Environments:
- Suitable for use in marine applications, such as rudder bearings, propeller shafts, and underwater equipment.
- Oil and Grease Environments:
- Ideal for automotive and industrial machinery, where components are frequently exposed to lubricants like oil and grease.
- Dry or Oil-Free Applications:
- Also effective in applications where external lubrication is not feasible, relying on the self-lubricating properties of the solid lubricant inserts.
- Heavy-Duty Industrial Use:
- Common in construction equipment, mining machinery, and other heavy-duty industrial applications requiring robust and maintenance-free bearing solutions.
Oil-Free Bushing Bearing
Self-lubricating cast bronze bushings with solid lubricant inserts provide a durable, maintenance-free solution for a variety of demanding applications. The use of high-quality bronze alloys (ASTM B271 C86300 and ASTM B505 C86300) ensures excellent mechanical properties, while the incorporation of graphite inserts guarantees long-lasting lubrication. These bushings are designed to perform reliably in water, oil, grease, and even dry conditions, making them versatile and highly effective for numerous industrial applications.
Oil-Free bush straight type or universal use in many dry applications such as die/mold, machinery, automation, construction, automobile. The Oil Free bush is self-lubrication and works without grease.
Bronze-graphite bushing: Bronze-graphite self-lubricating sliding bushings Spherical bronze-graphite bushings are formed from a bronze alloy with porosity up to 20-25% volume. The oil contained in the porosity allows for permanent lubrication of the space between the bearing and the shaft. Application advantages: the presence of oil reduces the possibility of scuffing; allows the bronze-graphite sleeve to remain operational for thousands of hours without wear; there is no need for lubrication; produces little noise. The products are used in electrical equipment, household appliances, used in printing machines, machine tools, etc. To order: it is possible to produce products according to the customer’s specifications. It is possible to buy bronze-graphite bushings on the company’s website.
Self-Lubricated Oilless Bushes Oil Free Bush Bronze Material
| Material | China GB1776-87 |
Standard | Application situation | |||
| International ISO 1338 |
Japan | USA | Germany | |||
| 500#SP | CuZn25Al6FeMn3 | CuZn25Al6FeMn3 | H5102 CAC304 |
B30-92 C86300 |
DIN1709 G-CuZn25A/2.0598 |
High load, low speed, general use |
| 500#SP1 | CuZn25Al6FeMn3 | CuZn25Al6FeMn3 | H3102 CAC304 |
B30-92 C86300 |
DIN1709 G-CuZn25A/2.0598 |
High load, low speed, high load-bearing |
| 500#SP5 | CuZn25Al6FeMn3 | CuZn25Al6FeMn3 | H3102 CAC304 |
B30-92 C86300 |
DIN1709 G-CuZn25A/2.0598 |
Ultra-high load, low speed, high load-bearing |
| – | CuAl10Fe3 | CuAl10Fe3 | H5114 CAC703 |
B30-92 95800 |
DIN1714 GB-CuAl10NI/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 |
Product Features
1. Elimination of Oil Supply System
- No need for oil supply devices, oil injection holes, or oil tanks.
- Significant cost and time savings by eliminating expenses related to oil supply devices, processing, and assembly.
2. Reduced Operating Costs
- Significantly lower consumption of lubricating oil.
- Reduced equipment maintenance costs and elimination of risks due to insufficient oil supply.
3. Shorter Design Time
- Improved mechanical performance, extended service life, and enhanced reliability.
- The use of self-lubricating bearings contributes to overall design efficiency.
4. Environmental Benefits
- No need for waste oil recycling, promoting environmental protection.
- JDB (500#) self-lubricating oil-free bushings are versatile for mechanical applications, ensuring proper mechanical transmission without hair pulling under high load conditions.
5. Usage Precautions
- Opt for standard specifications when designing if possible.
- Ensure no foreign matter is present on the surface during assembly.
- Black or gray-black film on the sliding surface indicates solid lubricant—do not clean it off.
- Applying lubricant to wear parts before assembly can facilitate smoother operation.
- Press the assembly slowly to avoid damaging the bearing.
- Choose appropriate materials for different parts to enhance mechanical properties and extend bearing life.
- Use screws for high-load, reciprocating motion applications.
- For use in fresh or seawater environments, opt for stainless steel or chrome-plated grinding shafts.
Advantages of Solid Self-Lubricating Oil-Free Bushings
1. Oil Supply System Not Required
- Saves labor and time in mechanical design by eliminating the need for oil supply devices.
- Adaptable to various special conditions with customizable shapes for diverse applications.
- Reduces costs associated with mechanical inspection, maintenance, and oil supply.
2. No Need for Additional Oil
- Self-lubricating film forms due to the greater coefficient of linear expansion of the lubricant compared to the metal matrix.
- Effective in situations where adding oil or grease is difficult, even under low-speed and high-load conditions.
3. Lower Usage Costs
- Eliminates the need for frequent oil maintenance, reducing pollution and maintenance costs.
- Achieves a clean environment and significant savings on lubricant costs.
4. Superior Performance Under High Load and Low Speed
- Made from high-strength alloy brass with a special graphite formula for self-lubrication.
- Combines the strengths of both materials to perform well even under high-load and low-speed conditions.
5. Excellent Wear Resistance in Challenging Conditions
- The lubricant arrangement ensures availability throughout the grinding parts during operation.
- Suitable for reciprocating, rocking, and frequent start-stop motions where oil film formation is challenging.
6. Superior Chemical and Corrosion Resistance
- Made from wear-resistant materials like graphite, PTFE, and molybdenum disulfide.
- The metal matrix can be selected for different chemical resistance, enhancing durability.
7. Competitive Product Cost
- Longer working life and minimal maintenance compared to similar products.
- Extended replacement cycles and superior performance.
Specifications for Graphite Plug Bronze Bush
- Inner Diameter (ID): 50 mm
- Outer Diameter (OD): 62 mm
- Length: 50 mm
For inquiries or to request a specific size or catalog of oilless bearings, please contact us. Our manufacturing units are located in China, and we specialize in castings and machined components made of bronze.
Would you like more information about the applications, advantages, or mechanical properties calculations for this specific size of bushing?
| Code | d F7 | D M6 | L | |||||||||||||||||||||
| OIL-FREE BUSHES | 5 | +0.022 +0.010 |
9 | +0.015 +0.006 |
8 | 10 | 12 | 15 | ||||||||||||||||
| 6 | 10 | 8 | 10 | 12 | 15 | 16 | 20 | |||||||||||||||||
| 8 | +0.028 +0.013 |
12 | +0.018 +0.007 |
8 | 10 | 12 | 15 | 16 | 20 | 25 | ||||||||||||||
| 10 | 14 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | |||||||||||||||
| 12 | +0.034 +0.016 |
18 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | |||||||||||||
| 13 | 19 | +0.021 +0.008 |
10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | ||||||||||||||
| 14 | 20 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | |||||||||||||||
| 15 | 21 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
| 16 | 22 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
| 17 | 23 | 15 | 30 | 35 | ||||||||||||||||||||
| 18 | 24 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
| 19 | +0.041 +0.020 |
26 | 15 | 20 | ||||||||||||||||||||
| 20 | 28 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | |||||||||||
| 30 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 100 | ||||||||||||||
| 22 | 32 | +0.025 +0.009 |
12 | 15 | 20 | 25 | ||||||||||||||||||
| 25 | 33 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | |||||||||||||
| 35 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | ||||||||||||
| 28 | 38 | 20 | 25 | 30 | 40 | |||||||||||||||||||
| 30 | 38 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||
| 40 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||
| 31.5 | +0.050 +0.025 |
40 | 30 | 40 | ||||||||||||||||||||
| 32 | 42 | 20 | 30 | 40 | ||||||||||||||||||||
| 35 | 44 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | |||||||||||||||
| 45 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | ||||||||||||||||
| 38 | 48 | 30 | 40 | |||||||||||||||||||||
| 40 | 50 | 15 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||
| 55 | +0.030 +0.011 |
15 | 25 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||||
| 45 | 55 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||||||
| 56 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
| 60 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
| 50 | 60 | 20 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||
| 62 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
| 65 | 30 | 40 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||||
| 55 | +0.060 +0.030 |
70 | 40 | 50 | 60 | 70 | ||||||||||||||||||
| 60 | 74 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||
| 75 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||||
| 63 | 75 | 60 | 70 | 80 | ||||||||||||||||||||
| 65 | 80 | 40 | 50 | 60 | 70 | 80 | ||||||||||||||||||
| 70 | 85 | +0.035 +0.013 |
30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||
| 90 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||||||
| 75 | 90 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||||||
| 95 | 60 | 70 | 80 | 100 | ||||||||||||||||||||
| 80 | 96 | 40 | 50 | 60 | 70 | 80 | 100 | 120 | ||||||||||||||||
| 100 | 40 | 50 | 60 | 70 | 80 | 100 | 120 | 140 | ||||||||||||||||
| 85 | +0.071 +0.036 |
100 | 60 | 80 | ||||||||||||||||||||
| 90 | 110 | 30 | 50 | 60 | 70 | 80 | 90 | 100 | 120 | |||||||||||||||
| 100 | 120 | 50 | 60 | 70 | 80 | 100 | 120 | 140 | ||||||||||||||||
| 110 | 130 | +0.040 +0.015 |
50 | 70 | 80 | 100 | 120 | |||||||||||||||||
| 120 | 140 | 70 | 80 | 90 | 100 | 120 | 140 | |||||||||||||||||
| 125 | +0.083 +0.043 |
145 | 100 | 120 | ||||||||||||||||||||
| 130 | 150 | 80 | 100 | 130 | ||||||||||||||||||||
| 140 | 160 | 100 | 140 | |||||||||||||||||||||
| 150 | 170 | 80 | 100 | 150 | ||||||||||||||||||||
| 160 | 180 | 80 | 100 | 150 | ||||||||||||||||||||
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Brand replacement products and functionally equivalent parts, alternative solutions
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