How to Maintain Double-row Ball Slewing bearings
Double-row ball slewing bearings play a crucial role in many large-scale mechanical equipment. Their operating conditions are directly related to the stability and service life of the equipment. Maintain them well can not only extend their service life but also ensure the efficient and safe operation of the equipment.
What is Double-row Ball Slewing bearing?
A double-row ball slewing bearing is a type of slewing bearing, mainly composed of inner rings, outer rings, two rows of steel balls, and spacers. Its unique structure features two rows of steel balls. Compared with single-row ball slewing bearings, this design greatly improves the load-carrying capacity and can simultaneously withstand large axial forces, radial forces, and overturning moments. It is widely used in various large-scale mechanical equipment, such as port cranes, large excavators, and wind power generation equipment. It can ensure the smooth and flexible rotation of key components of the equipment and is a key mechanical component to ensure the normal operation and efficient operation of these equipment, playing an important role in enhancing the performance and reliability of the equipment.
Methods for Maintaining Double-row Ball Slewing Rings
Daily inspection is the basic work of maintaining double-row ball slewing bearings. Before and after each use of the equipment, a detailed inspection of the slewing bearing should be carried out. Check whether there are obvious cracks, scratches, or deformations on the surface of the slewing bearing. If cracks are found, even slight ones, they may gradually expand during the operation of the equipment and eventually lead to the failure of the slewing bearing. It must be replaced in a timely manner. Scratches will damage the surface accuracy of the slewing bearing and accelerate wear. It is necessary to evaluate its severity and decide whether to repair or replace it. At the same time, check whether the connecting bolts of the slewing bearing are loose. Loose bolts will cause additional vibration and displacement during the operation of the slewing bearing, affecting the equipment accuracy and even causing safety accidents. Once loose bolts are found, they should be tightened according to the specified torque immediately. In addition, pay attention to observing the sealing condition of the slewing bearing. Check whether the seals are damaged or aged. If there are any problems, replace the seals in a timely manner to prevent dust, impurities, and moisture from invading and avoid wearing and corroding the rolling elements and raceways.
Lubrication is the core link in maintaining double-row ball slewing bearings. During the operation of the slewing bearing, there is relative motion between the rolling elements and the raceways. Good lubrication can effectively reduce the friction coefficient, reduce wear, and extend the service life. Select appropriate lubricants according to the working environment and requirements of the slewing bearing. Under general working conditions, lithium-based grease can be selected; in high-temperature environments, high-temperature-resistant grease should be used; in environments with a risk of chemical corrosion, lubricants with anti-corrosion properties are required. The frequency of lubrication is also crucial. Excessive lubrication will cause waste of lubricants, increase costs, and may also adsorb more dust; untimely lubrication will lead to increased wear of components. Usually, after the equipment has been in operation for a certain period of time or worked for a certain number of hours, supplementary lubrication should be carried out. For example, for continuously operating equipment, lubrication should be carried out at least once a week; for intermittently used equipment, the lubrication cycle can be determined according to the actual working hours. When adding lubricants, ensure that the lubricants are evenly applied to the surfaces of the rolling elements and raceways. You can inject oil through a special oil injection nozzle until new lubricants are extruded from the seal to ensure sufficient lubrication.
Regular cleaning of double-row ball slewing bearings is also essential. During the operation of the equipment, the slewing bearing will adsorb a large amount of dust and impurities. If these substances are not cleaned in a timely manner, they will enter the interior of the slewing bearing and accelerate wear. When cleaning, first cut off the power supply of the equipment to ensure operation safety. Then, use a clean cloth or brush to gently wipe the dust and dirt on the surface of the slewing bearing. For stubborn oil stains and impurities, an appropriate amount of cleaning agent can be used, but pay attention to choosing a cleaning agent that has no corrosive effect on the slewing bearing. After cleaning, rinse with clean water and dry the surface moisture to prevent the remaining cleaning agent from corroding the slewing bearing. At the same time, also clean the environment around the slewing bearing, keep the area around the equipment clean, and reduce the source of dust and impurities.
Regularly detecting and adjusting the accuracy of double-row ball slewing bearings can ensure the normal operation accuracy of the equipment. With the use of the equipment, accuracy problems such as radial runout, axial runout, and end face runout may occur in the slewing bearing. Professional detection tools such as dial indicators can be used to regularly detect the accuracy of the slewing bearing. If the accuracy is found to exceed the specified range, adjustments should be made in a timely manner. During the adjustment, corresponding measures should be taken according to specific accuracy problems. For example, for excessive radial runout, the bearing clearance can be adjusted to solve it; for axial runout problems, it may be necessary to adjust the installation position of the slewing bearing or replace relevant components. During the adjustment process, strictly follow the equipment operation manual to ensure the accuracy and safety of the adjustment.
Storage maintenance is also an important part of the maintenance of double-row ball slewing bearings. If the equipment is not used for a long time, the slewing bearing needs to be properly stored. First, clean the surface of the slewing bearing and apply a layer of anti-rust oil to prevent rust. Then, place the slewing bearing in a dry and well-ventilated warehouse to avoid getting damp and rained on. When storing, avoid subjecting the slewing bearing to heavy pressure or collisions to prevent deformation. For large slewing bearings, special brackets can be used for storage to ensure their stable state. At the same time, regularly check the stored slewing bearings to see if the anti-rust oil has fallen off and if there are signs of rust on the surface. If there are any problems, deal with them in a timely manner.
Maintaining double-row ball slewing bearings is a systematic and meticulous task, covering many aspects such as daily inspection, lubrication, cleaning, accuracy detection and adjustment, and storage maintenance. Only by doing a good job in the maintenance of each link can the double-row ball slewing bearing always be in a good operating state, providing strong support for the stable operation of the equipment, reducing the equipment maintenance cost, and improving production efficiency.
The Price of Double-row Ball Slewing bearings
There are many factors affecting the price of slewing bearings. Firstly, raw materials: high-quality steel has a high cost, and products made from it have excellent performance and a long service life, so the price is high. Secondly, slewing bearings with complex manufacturing processes and high precision requirements require advanced equipment and strict quality control, and their prices will also increase accordingly. Moreover, the larger and more special the size and specifications are, the greater the processing difficulty and material consumption, and the higher the price.
Suppliers of Double-row Ball Slewing bearings
In terms of services, ldb bearing Company is also remarkable. Before sales, it provides professional selection suggestions according to customers’ needs and can also customize products or upgrade the existing slewing structures of main engines. During sales, it strictly controls the production progress and quality to ensure the on-time and high-quality delivery of products.With excellent product quality, strong technical strength, and a perfect service system, ldbbearing Company has become a benchmark in the slewing bearing industry. In the future, it is believed that it will continue to uphold the concept of innovation and quality first and shine more brightly in the global market, contributing more to the development of various industries.
