Product Description
EB1.25.1204.400-1SPPN 4 Point Contact Ball Slewing Bearing
Four-point contact ball slewing turntable bearings
consist of 2 ring seats. Compact structure, light weight, steel ball and arc track contact at 4 points, can bear axial force, radial force and overturning moment at the same time, has strong dynamic load.
Single row cross roller slewing bearing
Composed of 2 or 3 rings. compact structure, light weight, high manufacturing accuracy, small assembly gap and high requirement for installation accuracy. Rollers are 1:1 cross-arranged.
Can be bear axial force, overturning moment and large radial force at the same time,and widely used in lifting transportation, construction machinery and precesion products.
Double row ball slewing bearings
This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Three row roller slewing bearing
Three row roller bearing CZPT to bear all kinds of loads at the same time, it is the largest 1 of the 4 structural products with large axle and radial dimensions and firm structure. Especially suitable for heavy machinery requiring larger diameter, such as bucket wheel stacker and reclaimer, wheel crane, marine crane, port crane, ladle turret,large tonnage truck crane,heavy machinery and so on.
| Type | • Single row 4 point contact ball slewing bearing • Single row crossed cylindrical roller slewing bearings • Double row ball slewing bearings •Double row Roller/ball combination slewing bearing •Three-Row Roller Slew Ring Bearing |
| Rolling elements | Steel ball / Cylinder Roller |
| Rolling elements Material | GCr5/GCr15SiMn/Customized |
| Bearing Material | 50Mn/42CrMo/42CrMo4V /Customized |
| Cage Material | Nylon/ steel /copper |
| Structure | taper pin , Mounting holes,Inner ring ,grease fitting,load plug, seals , roller ,spacer balls or separators |
| Outer diameter | 50-10000mm |
| Bore size | 50-10000mm |
| Mounting hole | Through hole/Tapped hole |
| Raceway hardness | 55-62HRC |
| Inner and outer ring modulation hardness |
229-269HB/Customized |
| Gear type | No gear ,Internal gear , External gear. |
| Embellish grease | EP2 lithium lubricating grease |
| Certificate | ABS.BV,DNV,ISO9001,GL,3.1,3.2 |
| Application area | Ladle turret,Stacker crane,Bucket wheel machine,Solar heliostat Tracking System,port crane, Cabling machine,tower crane , offshore platform,ferris wheel, Palletizing robot,Rotary metallurgical furnace,can packing machine,Wind blade transporter,shield tunneling machine,tube push bench,excavator |
| Brand Name | LYMC |
| Place of Origin | HangZhou ZheJiang |
| Warranty | 12 months |
| Payment term | T/T is our first choice |
|
Packing details |
1,Filling with anti-rust oil 2.Corved with Plastic paper 3.Corved with kraft paper 4.Corved with Blue tie 5.Put in wooden box |
Product Process
Application:
– Excavators – Drilling rigs – Mining Equipments – Cranes -Offshore Equipments – Vehicles – Machine Tools – Wind Turbines
About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
Our Service:
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
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| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Material: | 50mn/42CrMo |
| Type: | External Gear |
| Samples: |
US$ 320/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do Environmental Factors such as Temperature and Exposure to Corrosive Substances Impact Slewing Bearings?
Environmental factors, including temperature variations and exposure to corrosive substances, have a significant impact on the performance and longevity of slewing bearings. Here’s how these factors affect slewing bearings:
- Temperature Extremes:
High Temperatures: Excessive heat can lead to premature bearing failure by affecting the lubrication properties, causing thermal expansion, and accelerating wear. Bearings operating at high temperatures require special lubricants and materials that can withstand thermal stresses.
Low Temperatures: Extremely low temperatures can lead to reduced lubricant viscosity, increasing friction and wear. Bearings operating in cold environments might require low-temperature lubricants and materials that maintain their properties in freezing conditions.
- Corrosive Substances:
Moisture and Water: Exposure to moisture and water can lead to rust, corrosion, and erosion of bearing components. This is particularly relevant in marine environments or applications exposed to frequent wet conditions.
Chemical Exposure: Corrosive chemicals and aggressive substances can deteriorate bearing materials and lubricants, leading to accelerated wear and potential structural damage.
Dust and Particles: Dust, dirt, and particles can infiltrate the bearing, causing abrasive wear and increasing the risk of damage to the rolling elements and raceways.
- Effects on Lubrication:
Temperature extremes and exposure to corrosive substances can compromise the effectiveness of lubrication. High temperatures can degrade lubricants, while corrosive environments can contaminate or dilute lubricants, reducing their protective qualities.
- Material Selection:
When designing slewing bearings for specific environments, choosing appropriate materials is crucial. Stainless steels, specialized coatings, and corrosion-resistant materials are often preferred for applications where corrosion is a concern.
- Sealing Solutions:
Effective sealing solutions are essential to protect slewing bearings from moisture, chemicals, and contaminants. Proper sealing helps maintain lubrication integrity and prevents external substances from entering the bearing.
- Maintenance and Inspection:
Regular maintenance and inspections are critical in environments with temperature fluctuations and corrosive exposure. Prompt removal of contaminants, re-lubrication, and replacement of damaged parts can mitigate the effects of these factors.
- Application-Specific Considerations:
Understanding the environmental conditions of the application is essential for selecting the appropriate slewing bearing type, materials, and maintenance practices. Customized solutions might be necessary for extreme environments.
In summary, temperature variations and exposure to corrosive substances can degrade the performance and durability of slewing bearings. Proper material selection, sealing, lubrication, and maintenance practices are vital for ensuring the bearings’ reliability in challenging environmental conditions.
How does Proper Lubrication Impact the Performance and Longevity of Slewing Bearings?
Proper lubrication plays a crucial role in enhancing the performance and extending the longevity of slewing bearings. Here’s how it impacts these aspects:
- Reduced Friction and Wear:
Lubrication forms a protective layer between the rolling elements and raceways, reducing friction and wear. This minimizes surface contact and prevents metal-to-metal contact, leading to less wear and extended bearing life.
- Heat Dissipation:
Lubrication helps dissipate heat generated during operation. Adequate heat management prevents overheating, which can otherwise lead to premature bearing failure and reduced efficiency.
- Corrosion Protection:
Lubricants with anti-corrosion properties form a barrier that protects bearing surfaces from moisture and environmental contaminants. This is crucial in preventing rust and corrosion, especially in challenging operating environments.
- Sealing Effect:
Lubrication can enhance the sealing effect of bearing seals, preventing the ingress of dust, dirt, and other particles. This maintains the integrity of the bearing’s internal components and reduces the risk of contamination-related failures.
- Noise and Vibration Reduction:
Properly lubricated bearings generate less friction and operate more smoothly, resulting in reduced noise and vibration levels. This is particularly important in applications where noise reduction is essential.
- Improved Efficiency:
Effective lubrication minimizes energy losses due to friction, leading to improved overall efficiency of machinery. This is significant in applications that require high performance and energy savings.
- Prevention of Micro-Movements:
Lubrication helps prevent micro-movements between the rolling elements and raceways, reducing wear caused by repeated impacts and vibrations during operation.
- Maintenance Reduction:
Proper lubrication reduces the need for frequent maintenance and replacement of bearings. This not only saves time and resources but also contributes to increased uptime and reduced operational disruptions.
- Longevity:
By reducing wear, preventing corrosion, and managing heat, proper lubrication significantly extends the lifespan of slewing bearings. This, in turn, contributes to improved equipment reliability and reduced lifecycle costs.
In conclusion, proper lubrication is essential for optimizing the performance, efficiency, and durability of slewing bearings. Regular maintenance and adherence to manufacturer-recommended lubrication intervals ensure that the bearings operate smoothly and consistently over their operational life.
What Factors Should Be Considered When Selecting a Slewing Bearing for a Specific Application?
Selecting the right slewing bearing for a specific application requires careful consideration of various factors to ensure optimal performance and longevity. Some crucial factors to take into account include:
- Load Requirements: Determine the axial, radial, and moment loads that the slewing bearing will need to support. Choose a bearing with an appropriate load-carrying capacity for the application.
- Space Limitations: Consider the available installation space, both in terms of diameter and height. Choose a slewing bearing that fits within the allocated space without compromising functionality.
- Rotational Speed: Determine the required rotational speed of the bearing. Higher rotational speeds may require bearings with advanced designs and materials to manage heat and wear.
- Environmental Conditions: Assess the operating environment for factors like temperature, humidity, dust, and corrosive substances. Select a bearing with suitable seals and coatings to withstand these conditions.
- Accuracy and Precision: For applications requiring precise positioning, such as robotics or industrial machinery, choose a bearing that offers the necessary level of accuracy in rotation.
- Mounting and Assembly: Consider the ease of installation and any special mounting requirements. Some bearings come with integrated mounting features, simplifying the assembly process.
- Lubrication and Maintenance: Evaluate the lubrication needs of the bearing. Some bearings require periodic maintenance, while others are designed for long-term lubrication.
- Expected Lifespan: Determine the desired lifespan of the bearing in relation to the application’s operational requirements. High-quality bearings with robust construction may offer longer service life.
- Cost-Benefit Analysis: Balance the initial investment with long-term benefits. Consider factors like maintenance costs, downtime, and overall equipment performance.
- Industry Standards: Ensure that the selected slewing bearing complies with relevant industry standards and regulations for safety and quality.
Ultimately, the selection process involves matching the unique requirements of the application with the capabilities of the slewing bearing. Consulting with bearing manufacturers and experts can provide valuable insights to make an informed decision.
editor by CX 2024-04-25
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