The 5000mm heavy-duty slewing bearing has been successfully delivered.

LTZC has successfully developed and delivered an ultra-large special heavy-duty slewing bearing with an outer diameter of 5000 mm. This product will be used as a core rotating component in heavy equipment exported overseas.  The product has successfully passed acceptance testing and has been shipped abroad.

As a professional manufacturer of large diameter bearings and slewing bearings, LTZC has been deeply committed to the field of special bearings since its establishment in 1992.  Focusing on the research and development and manufacturing of core components for high-end equipment, LTZC has gradually built a product matrix of special bearings covering multiple specifications, categories, and applications, thanks to its solid technical expertise, comprehensive production system, and rigorous quality control.  Its products have outer diameters ranging from 300 mm to12000 mm and accuracy levels covering P0, P6, P5, and P4, and are widely used in high-end equipment fields such as wind power, rolling mills, ships, and large construction machinery. LTZC can provide both standardized product selection and independently design and manufacture non-standard bearings.

I. Project Background: Demand for Ultra-Large Slewing Bearings under Extreme Operating Conditions

The heavy equipment associated with this project will be exported overseas and used in the core rotating parts of large structural components. According to the overall machine design requirements, the slewing bearing needs to operate stably under the following conditions:

* Long-term exposure to high axial loads and complex overturning moments

* Continuous operation in a sustained high-temperature environment

* Simultaneous exposure to dust, moisture, and corrosive media

* Extremely high requirements for rotational accuracy and operational smoothness

Under these circumstances, conventional or standardized slewing bearings are no longer sufficient. The project team has placed extremely high demands on the bearing manufacturer in terms of materials, structural design, processing capabilities, and quality verification.

II. Core Challenges: Technical Difficulties of 5000mm Class Heavy-Duty Slewing Bearings

For heavy-duty slewing bearings with an outer diameter of 5000 millimeters, the technical challenges are not only reflected in the size itself, but also concentrated in the following aspects:

Extremely high material performance requirements

How to enhance the wear resistance and fatigue resistance of the slewing bearing under high temperature and heavy load conditions, and extend its service life.

Load balancing issues under ultra-large dimensions

How to optimize the internal load and achieve load balancing under the constraints of large dimensions.

Difficulties in processing and assembly precision control

How to improve the rotational accuracy of large-sized slewing bearings, reduce processing or assembly errors, and achieve high-precision positioning and rotation.

Long reliability verification cycle and high testing requirements

Overseas customers attach great importance to product reliability, requiring multi-condition and long-term simulation testing.

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III. LTZC Solution: Systematized Design from Materials to Structure

1. Special Materials and Surface Treatment Solutions

Based on the operating conditions, LTZC selected a high-performance special alloy material system and specifically optimized the heat treatment and surface treatment processes.

Through innovative surface strengthening technology, the durability and reliability of the bearings in high-temperature and corrosive environments have been significantly improved, laying a solid material foundation for long-term stable operation.

2. Structural Design Optimization and Load Distribution Control

During the structural design phase, the technical team conducted an in-depth analysis of the bearing's stress under actual operating conditions. By optimizing the internal load distribution structure, the overall rigidity and deformation resistance are effectively improved, ensuring smooth transmission and precise rotation even under ultra-large size conditions.

3. Precision Manufacturing and Full-Process Quality Control

Relying on LTZC's mature experience in forging, precision machining, and assembly of ultra-large diameter slewing bearings, full-process quality control is implemented for key processes to ensure that various geometric accuracy and performance indicators are stable and controllable.

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VI. LTZC Capability Summary: Focusing on Ultra-Large and Special Slewing Bearing Solutions

Through this project, LTZC once again demonstrated its comprehensive strength in the field of ultra-large diameter, heavy-duty, and special operating condition slewing bearings.In the future, LTZC will continue to focus on the research and development of high-end special bearing technology, providing global customers with more reliable and professional slewing bearing solutions to support the safe and efficient operation of major equipment.

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