Product Description

Mini excavator slew bearing slewing bearing rks.160.16.1534

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 able 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
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



– 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:

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. 
  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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
US$ 0/Piece
1 Piece(Min.Order)




How does the design of a slewing ring contribute to efficient rotation and movement?

The design of a slewing ring plays a crucial role in facilitating efficient rotation and movement in mechanical systems. Several design features contribute to its functionality and performance. Here’s a detailed explanation of how the design of a slewing ring contributes to efficient rotation and movement:

  • Structure and Load Distribution: Slewing rings are designed with a large diameter compared to their thickness. This structural design ensures optimal load distribution across the bearing, allowing it to support axial, radial, and moment loads efficiently. The arrangement of rolling elements within the raceways helps distribute the load evenly, reducing stress concentrations and minimizing friction during rotation.
  • Low Friction and Smooth Rotation: The rolling elements, which can be balls or rollers, are precisely positioned within the raceways of the inner and outer rings. The design ensures that the rolling elements make contact with the raceways at specific angles, reducing friction and enabling smooth rotation. This low-friction design minimizes power loss, enhances energy efficiency, and contributes to the overall efficiency of the system.
  • Gear Mechanism: In some slewing ring designs, a gear mechanism is integrated into the bearing. This allows the slewing ring to act as a rotational drive system, enabling controlled and precise movement. The gear teeth engage with external gears or pinions, providing a means to transmit torque and facilitating rotational motion. The gear mechanism in a slewing ring design contributes to efficient and synchronized rotation in applications where precise positioning or continuous rotation is required.
  • Sealing and Lubrication: Slewing rings are designed with sealing systems to protect the internal components from contaminants and prevent lubricant leakage. The sealing systems help maintain the integrity of the bearing by keeping out dirt, dust, water, and other particles that could cause damage or premature wear. Proper lubrication is also crucial for efficient rotation and movement. The design of slewing rings often includes lubrication channels or grease fittings to ensure adequate lubricant supply to the rolling elements and raceways, reducing friction and promoting smooth operation.
  • Materials and Durability: Slewing rings are typically made of high-quality materials such as alloy steels or specialty steels that offer excellent strength, durability, and corrosion resistance. The choice of materials and the design of the slewing ring take into account the specific application requirements, including factors such as load capacity, operating temperature, and environmental conditions. The design ensures that the slewing ring can withstand the anticipated loads, operating conditions, and service life requirements.

Overall, the design of a slewing ring is carefully engineered to maximize load-bearing capacity, minimize friction, enable smooth rotation, and ensure durability. By incorporating features such as optimized load distribution, low-friction rolling elements, gear mechanisms, sealing systems, and appropriate materials, slewing rings contribute to efficient rotation and movement in mechanical systems, enhancing the overall performance and reliability of the equipment.

How does the choice of materials impact the performance of slewing rings in different environments?

The choice of materials significantly impacts the performance of slewing rings in different environments. The selection of appropriate materials ensures the desired strength, durability, corrosion resistance, and overall reliability of the slewing rings. Here’s a detailed explanation of how the choice of materials impacts the performance of slewing rings in different environments:

  • Corrosion Resistance: Different environments may expose slewing rings to corrosive elements such as moisture, chemicals, or saltwater. Choosing materials with high corrosion resistance, such as stainless steel or corrosion-resistant alloys, helps protect the slewing rings from chemical reactions and rust formation. Corrosion-resistant materials ensure the longevity and reliability of slewing rings, especially in marine, offshore, or chemical industry applications.
  • Temperature Resistance: Environmental conditions, such as extreme temperatures or thermal cycling, can affect the performance of slewing rings. Materials that exhibit excellent temperature resistance, such as heat-treated steels or specialized alloys, are crucial in applications where slewing rings are exposed to high or low temperatures. These materials maintain their mechanical properties and dimensional stability, ensuring reliable performance even in demanding temperature environments.
  • Wear and Fatigue Resistance: In applications with high loads, repetitive movements, or abrasive environments, slewing rings may experience wear and fatigue. Choosing materials with high wear resistance, such as hardened steels or materials with specialized coatings, minimizes surface damage and extends the service life of the slewing rings. These materials can withstand the repetitive stresses and abrasive conditions, reducing the risk of premature failure.
  • Weight Considerations: In certain applications, weight is a critical factor. Slewing rings that are used in lightweight or mobile equipment may require materials that offer a balance between strength and weight. Lightweight materials like aluminum or high-strength composites can be suitable choices to reduce the overall weight of the slewing rings and improve the efficiency and maneuverability of the equipment.
  • Load Capacity: The choice of materials affects the load-carrying capacity of slewing rings. Materials with high tensile strength and fatigue resistance, such as specialized steels or alloys, enhance the load-bearing capabilities of the slewing rings. The selection of materials with appropriate mechanical properties ensures that the slewing rings can handle the required loads without deformation or failure.
  • Compatibility with Lubricants: Lubrication is essential for smooth operation and reduced friction in slewing rings. The choice of materials should consider their compatibility with the lubricants used in the specific environment. Certain materials may be more compatible with certain types of lubricants, ensuring optimal lubrication and minimizing wear and friction.
  • Electrical Conductivity: In applications where electrical conductivity is required, such as in certain industrial or robotic systems, materials with appropriate electrical conductivity properties may be necessary. Copper or specific alloys can be chosen to provide the desired electrical conductivity while maintaining the mechanical integrity of the slewing rings.

By selecting the appropriate materials based on the environmental conditions and specific application requirements, the performance and reliability of slewing rings can be optimized. Manufacturers and engineers consider factors such as corrosion resistance, temperature resistance, wear resistance, weight considerations, load capacity, lubricant compatibility, and electrical conductivity to determine the most suitable materials for slewing rings in different environments.

What are the signs that indicate a need for slewing ring replacement or maintenance, and how can they be diagnosed?

When it comes to slewing rings, certain signs indicate the need for replacement or maintenance to ensure optimal performance and prevent potential failures. Here’s a detailed explanation of the signs that indicate a need for slewing ring replacement or maintenance, along with methods for diagnosis:

  • Unusual Noise: Unusual noises, such as grinding, clicking, or squealing sounds, during the operation of rotating systems may indicate a problem with the slewing ring. These noises can be caused by worn-out or damaged rolling elements, insufficient lubrication, misalignment, or other issues. Diagnosis involves conducting a thorough inspection of the slewing ring and its components to identify the source of the noise and determine the appropriate course of action.
  • Abnormal Vibration: Excessive vibration during the operation of rotating systems can be a warning sign of a faulty slewing ring. It may indicate misalignment, imbalanced loads, damaged rolling elements, or worn-out bearings. Vibration analysis techniques, such as using vibration sensors or analyzers, can help diagnose the source and severity of the vibration. Based on the analysis results, appropriate maintenance or replacement actions can be taken.
  • Irregular Movement: Any irregular movement or jerking motion of the rotating system can be an indication of a problem with the slewing ring. It may be caused by damaged or worn-out teeth on the slewing ring, misalignment, or inadequate lubrication. Visual observation of the system’s movement during operation can help identify any irregularities. Additionally, conducting a detailed inspection of the slewing ring and its teeth can provide further insight into the issue.
  • Increased Friction: If there is a noticeable increase in friction or resistance during the rotation of the system, it could be a sign of a problem with the slewing ring. This may be due to insufficient or contaminated lubrication, damaged rolling elements, or misalignment. Diagnosis involves checking the lubrication levels and quality, inspecting the rolling elements for signs of damage, and verifying the alignment of the slewing ring.
  • Uneven or Excessive Wear: Visual inspection of the slewing ring can reveal signs of uneven or excessive wear. This can manifest as worn-out or pitted rolling elements, damaged or missing teeth, or abnormal wear patterns on the raceways. Regular inspections and comparing the current condition with the manufacturer’s specifications or previous inspection records can help diagnose the level of wear and determine if maintenance or replacement is necessary.
  • Leakage or Contamination: Leakage of lubricant or the presence of contaminants, such as dirt, water, or debris, in the slewing ring assembly can be indicative of a problem. It may lead to inadequate lubrication, accelerated wear, or corrosion. Visual inspection of the slewing ring and any associated seals or gaskets can help identify any signs of leakage or contamination. Addressing the source of the leakage and ensuring proper sealing is essential to maintain the integrity and performance of the slewing ring.
  • Reduced Load-Carrying Capacity: If the rotating system experiences difficulty in handling its intended loads or shows signs of decreased load-carrying capacity, it may indicate an issue with the slewing ring. Factors such as worn-out rolling elements, damaged raceways, or misalignment can contribute to the reduction in load-carrying capacity. Performance testing and comparing the system’s current capabilities with its original specifications can help diagnose any loss in load-carrying capacity.

In summary, signs that indicate a need for slewing ring replacement or maintenance include unusual noise, abnormal vibration, irregular movement, increased friction, uneven or excessive wear, leakage or contamination, and reduced load-carrying capacity. These signs can be diagnosed through visual inspections, vibration analysis, performance testing, and comparing the observed conditions with the manufacturer’s specifications. Early detection and timely maintenance or replacement of the slewing ring can prevent further damage, ensure safe operation, and extend the lifespan of the rotating system.

China OEM Mini Excavator Slew Bearing Slewing Bearing Rks. 160.16.1534  China OEM Mini Excavator Slew Bearing Slewing Bearing Rks. 160.16.1534
editor by Dream 2024-05-16