Rotary Table Bearing

Rotary table bearings are essential components in a variety of applications, ranging from robotics to medical equipment. They are designed to support loads and provide precise indexing in applications that require complex, rotational movements. This in-depth guide will explore the fundamentals of rotary table bearings, their uses, selection, maintenance, and more.

Table of Contents:

  1. Introduction to Rotary Table Bearings
  2. Types of Rotary Table Bearings
  3. Applications of Rotary Table Bearings
  4. Selecting the Right Rotary Table Bearings
  5. Maintenance and Troubleshooting of Rotary Table Bearings
  6. Future Trends in Rotary Table Bearings
  7. Conclusion

1. Introduction to Rotary Table Bearings

Rotary table bearings, also known as slewing ring bearings, are large bearings designed to handle complex load transmissions. Typically, they are made of two concentric rings with rolling elements in between – these could be balls or cylindrical rollers. The outer ring is often segmented, allowing it to support large radial, axial, or moment loads.

2. Types of Rotary Table Bearings

YRT Rotary Table Bearings

YRT Rotary Table Bearing can be used to the machine tool and other high precision machinery of the rotary table or sub-set, and also can be used for chuck, measuring instruments and test equipment and rotary table configuration, this bearing requires higher quality of the parts to match it. you can control screw tightening torque when install it.

YRTS High Speed Rotary Table Bearings

YRTS (YRT Speed) high-speed rotary table bearings are a specialized type of rotary table bearing designed to meet the demands of applications requiring both high precision and rapid rotational speeds. These bearings are known for their exceptional performance characteristics, making them suitable for a range of applications in various industries. Here are some common applications for YRTS high-speed rotary table bearings: Machine Tools and CNC Machining Centers; Robotic Arms and Automation; Medical Equipment; Semiconductor Manufacturing; Aerospace and Defense.

YRTM With Integrated Angle Measuring System Bearings

This series of bearings is based on YRT rotary table bearings. An angular measurement system is installed on the YRT to accurately measure and adjust the rotation angle of the bearing. The precision can reach ±1 arc-second. It is suitable for applications which need high requirements for the angle positioning accuracy.

ZKLDF Axial Angular Contact Ball Bearings

ZKLDF Axial angular contact ball bearings are particularly suitable for precision applications involving combined loads. Their preferred areas of use are bearing arrangements in rotary tables with a main spindle function, for example in combined milling and turning, as well as in milling, grinding and honing heads and in measurement and testing equipment.

3. Applications of Rotary Table Bearings

Industrial Automation

In industries such as automotive manufacturing, rotary table bearings are used in robotic arms for assembling parts. Their ability to handle complex loads and rotate precisely makes them ideal for these applications.

Medical Equipment

In medical applications, rotary table bearings are used in devices like CT scanners that need to rotate around the patient with high precision. They also find use in robotic surgery systems.

Wind Turbines

In wind turbines, rotary table bearings are used to allow the turbine blades to rotate smoothly in the wind. They must be robust and durable, as they often operate in harsh conditions.

4. Selecting the Right Rotary Table Bearings

Choosing the right rotary table bearing depends on several factors, including the nature of the load, the required precision, the speed of rotation, and the operational environment.

Load Capacity

Consider the loads the bearing will need to handle. This includes radial loads (perpendicular to the axis of rotation), axial loads (along the axis of rotation), and moment loads (causing rotation).


The required precision depends on the application. For example, robotic surgery requires very high precision, while some industrial applications may not.


Higher speeds generally require bearings with lower friction, such as ball bearings. For lower speeds or stop-start operation, roller bearings may be more appropriate.


The operational environment affects the bearing selection. For example, in a corrosive environment, stainless steel bearings may be needed.

5. Maintenance and Troubleshooting of Rotary Table Bearings

Regular maintenance is crucial to ensure the longevity of rotary table bearings. This can include regular lubrication, monitoring for signs of wear, and timely replacement of worn-out parts.

Troubleshooting common problems can involve checking for excessive noise, which may indicate a lack of lubrication or worn-out elements. Unusual movement might suggest misalignment or an uneven load distribution.

6. Future Trends in Rotary Table Bearings

With advancements in technology, we can expect further improvements in rotary table bearings. These might include new materials for increased durability, better designs for higher load capacities, and smart bearings that can monitor their own condition and alert users to potential problems.

7. Conclusion

Rotary table bearings play a crucial role in many applications, from industrial machinery to medical equipment. Understanding their types, uses, how to select them, and how to maintain them can ensure their effective operation and long lifespan. As technology continues to advance, we can expect these versatile components to become even more efficient and reliable.

LKPB Rotary Table Bearings Products

YRT Series Rotary Table Bearing (17)

YRTS Series High Speed Rotary Table Bearing (5)

ZKLDF Series Axial Angular Contact Ball Bearing (9)

LKPB YRT Rotary Table Bearings test video

For expert guidance in meeting your specific requirements, reach out to our knowledgeable team. Experience firsthand how our precision solutions can elevate your machinery’s efficiency and durability. Contact us today!

LKPB With more than 10 years of production experience

Supporting OEM service; 50 days return service; 7*24 hours technical support; Accept non-standard customization; Maximum 24 months product warranty


Luoyang LIKE Precision Machinery Co., Ltd – LKPB,Located in Luoyang, which is a bearing manufacturing base in China, we are an enterprise focusing on the research, development and manufacture of precision bearings, mainly producing precision crossed roller bearings and rotary table bearings and various non-standard bearings with precision class of P5, P4 , P2 and VSP.

The company strictly follows the ISO9001 quality system requirements for product quality control, relying on the professional technology of the bearing production base, the product quality is stable and cost-effective, and is well received by customers at home and abroad. The company adheres to the concept of “openness, professionalism and responsibility”, and strives to become a professional bearing application service provider. Welcome customers to negotiate, looking forward to sincere cooperation with you, willing to achieve a win-win situation with you!

Luoyang LIKE Precisoin Machinery Co., Ltd has accumulated rich production experience in the past 10 years,  supporting OEM service. Our products are exported to Germany, Italy, Korea, Japan, the United States, Belgium, Turkey and so on.

Top quality:  Rotary Table Bearing ( YRTYRTS, YRTM, ZKLDF series) ; Crossed Roller Bearing ( RA/RAU, RBRU, RE, SX, XU, XSUXR/JXR, CRB/CRBC, CRBHCRBFCRBSCRBT series); Thin Section Bearings ( KAA, KA, KB, KC, KD, KF, KG, JHA, JA, JB, JG, JU series);  Harmonic Reducer Bearings ( CSFSHF series); Angular Contact Ball Bearing ( 718, 719, 70, 72 series); Hollow Rotary Platform Bearings ( ZK series); and Flexible Bearings ( F series, 3E series).

Yes, We have experience working in this area

The main application areas of our products are precision rotary tables, machining center rotary tables, industrial robot joints and rotating, robotic rotating parts, CNC machine tools, automation industry, direct drive motors, precision instruments, radar, medical equipment and other industries.

Regular models are in stock, reasonable prices, ready for delivery, non-standard precision bearings according to the requirements of the drawings and the number of 1-3 weeks delivery time