Product Description

RKS.Roller slewing bearing 695x477x77mm, China slewing ring supplier
 

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.
product-list-1.html
 

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
Roller Type: Straight Raceway
Material: 50mn/42CrMo
Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

slewing bearing

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.

slewing bearing

What are the Common Maintenance Practices for Ensuring the Durability of Slewing Bearings?

Maintaining slewing bearings is crucial for ensuring their longevity and optimal performance. Here are some common maintenance practices to enhance the durability of slewing bearings:

  • Regular Inspection:

Perform routine visual inspections to check for signs of wear, corrosion, and damage. Inspect seals, lubrication levels, and any unusual noises or vibrations during operation.

  • Lubrication:

Follow the manufacturer’s guidelines for lubrication intervals and use appropriate lubricants. Lubricate the bearings to ensure smooth operation, reduce friction, and prevent wear.

  • Seal Maintenance:

Inspect and maintain seals to prevent the ingress of contaminants such as dust, dirt, and moisture. Damaged or worn seals should be replaced promptly.

  • Cleaning:

Regularly clean the bearing and its surrounding area to remove dirt, debris, and contaminants that could affect performance. Keep the bearing environment as clean as possible.

  • Environmental Protection:

If the bearings are exposed to harsh conditions, consider using protective covers or shields to prevent direct exposure to elements like water, chemicals, and abrasive materials.

  • Alignment and Mounting:

Ensure proper alignment during installation to prevent unnecessary stress on the bearing. Accurate mounting reduces the risk of misalignment-related failures.

  • Torque Monitoring:

If the bearing has gears, regularly monitor and maintain the torque levels to prevent overloading and premature wear.

  • Load Distribution:

Operate the machinery within the specified load limits to avoid overloading the bearing, which can lead to fatigue and failure.

  • Replacement of Worn Components:

If any components, such as seals or lubrication fittings, show signs of wear, replace them promptly to maintain the integrity of the bearing system.

  • Documentation:

Maintain records of maintenance activities, including lubrication schedules, inspections, and any repairs or replacements. This documentation helps track the bearing’s history and aids in decision-making.

  • Training:

Ensure that maintenance personnel are adequately trained to carry out proper inspection, lubrication, and maintenance procedures.

By implementing these maintenance practices, you can maximize the service life of slewing bearings, minimize downtime, and maintain consistent machinery performance.

slewing bearing

What are the Main Applications of Slewing Bearings?

Slewing bearings find wide applications across various industries due to their ability to handle complex loads and facilitate rotational movement. Some of the main applications of slewing bearings include:

  • Construction Machinery: Slewing bearings are essential components in construction equipment such as excavators, cranes, concrete pumps, and drilling rigs. They enable smooth rotation and movement, supporting heavy loads and dynamic forces.
  • Wind Turbines: In wind energy systems, slewing bearings are used to orient the rotor blades and nacelle to capture maximum wind energy. Their durability and load-bearing capacity make them crucial for efficient wind turbine operation.
  • Mining Equipment: Slewing bearings are used in mining machinery like stacker-reclaimers and conveyor systems. They enable the movement of large loads, contributing to efficient material handling and processing.
  • Marine Applications: Slewing bearings are employed in ship cranes, davits, and other marine equipment. They assist in cargo handling, ship maintenance, and various onboard operations.
  • Aerial Work Platforms: Slewing bearings are integral to aerial platforms and access equipment. They enable controlled and safe movement for workers at elevated heights.
  • Robotics and Automation: Slewing bearings play a role in industrial robots and automation systems. They facilitate precise and controlled rotational movement in manufacturing processes.
  • Medical Equipment: Some medical imaging equipment, such as CT scanners and MRI machines, use slewing bearings for rotational movement, contributing to accurate diagnostics.
  • Defence and Aerospace: Slewing bearings are employed in defense equipment like radar systems and missile launchers, as well as in aerospace applications like aircraft landing gear.

These are just a few examples of the many applications of slewing bearings across different industries. Their ability to handle diverse loads and rotational movements makes them versatile components in various machinery and equipment.

China OEM Rks. 121390101002 Roller Slewing Bearing 695X477X77mm, China Slew Bearing Supplier   with Hot sellingChina OEM Rks. 121390101002 Roller Slewing Bearing 695X477X77mm, China Slew Bearing Supplier   with Hot selling
editor by CX 2024-05-13

Slewing bearings

As one of the slewing bearings manufacturers, suppliers, and exporters of mechanical products, We offer slewing bearings and many other products.

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