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Here are the questions that most customers often asked, please refer to them, if you have any other questions, please contact us.
Slewing bearings are large rolling-element bearings designed to handle heavy combined loads—axial, radial, and moment loads—simultaneously. Their primary use is to enable slow-rotation or oscillating movement between heavy components.
Common bearing materials include high-carbon steel, stainless steel, ceramics, plastics, and alloys. Steel bearings are most common in most applications.
Select a slewing bearing by analyzing the applied loads (axial, radial, and moment), required rotational speed, gear type, installation space, and environmental conditions to determine the correct size, bearing type (ball or roller), and bearing material grade.
Methods to extend bearing life include regular lubrication, avoiding overloading, keeping the bearings clean, using proper mounting techniques, and avoiding extreme temperatures and vibration.
LTZC is a company specializing in the production and manufacture of slewing bearings. It has more than 20 years of experience in bearing research and development and is a well-known bearing manufacturer.
A slewing bearing is a large rolling bearing that can withstand combined loads and is primarily used to achieve relative rotation or swing between two heavy structural components.
Slewing bearings are typically much larger than conventional rolling bearings and can accommodate greater loads and lower speeds. Their design typically includes inner and outer rings, rolling elements, and a sealing assembly, capable of withstanding simultaneous radial, axial, and tilting moments.
Common slewing bearing failures include excessive wear, damage, seal failure, insufficient lubrication, and improper installation. Failures can cause increased vibration and noise, or decreased equipment efficiency, necessitating regular inspection and maintenance.
The fatigue life of a slewing bearing can generally be estimated by calculating factors such as the bearing's dynamic load rating, bearing material, lubrication conditions, and operating environment. Using ISO standards for calculations, we can predict the bearing's service life under normal operating conditions.
A sealed bearing has protective covers on both sides to prevent dirt, dust, and moisture from entering, while retaining the lubricant inside. These are often used in applications where contamination is a concern.
Bearing lubrication reduces friction, prevents wear, and dissipates heat. It is crucial to select the right type of lubricant (oil or grease) based on the operating conditions of the bearing.
When selecting a bearing, consider the following factors: load type (radial or axial), speed, operating environment (temperature, humidity, contamination), bearing type (such as deep groove ball bearings or cylindrical roller bearings), and lubrication requirements.
Bearings support and guide rotating parts by reducing friction between moving parts. Rolling bearings carry loads through rolling elements such as steel balls or rollers.
When selecting a lubricant, consider the bearing's operating temperature, operating environment, bearing load, and speed. Common lubricant types include mineral oil, synthetic oil, and grease.
A bearing's load rating refers to the maximum load it can sustain over a long period of time at rated speed and under standard operating conditions. It is generally categorized into static and dynamic loads.
Bearing corrosion can be prevented by using corrosion-resistant materials, surface coatings, and good seal design.
The main difference is that slewing bearings are designed to carry combined loads in slow-speed rotating applications, while roller bearings primarily carry radial or axial loads within the machine.
Slewing bearings are widely used in wind turbines, construction machinery, tower cranes, hoists, solar power generation, port machinery, and mining equipment. They support rotating components, ensuring equipment stability and efficient operation.
The slewing bearing size is determined by the equipment's load, speed, installation space, and torque. Choosing the right bearing size ensures stable and efficient operation. Not sure how to choose? Contact LTZC now.
For heavy loads, roller bearings or tapered roller bearings are ideal as they handle both radial and axial loads more effectively than ball bearings.
A split bearing is designed in two halves that can be assembled around a shaft without requiring the shaft to be removed, making maintenance easier.
