IPDB › China Industry › Industrial Equipment & Components › Bearing
Internal Gear Type Three-Row Cylindrical Roller Slewing Bearing Slewing Ring Slewing Bearing1
Slewing Bearing, Ldb Slewing Bearing, Cross Roller
Luoyang Longda Bearing Co., Ltd.
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Product Description Internal gear type three-row cylindrical roller slewing bearing TYPEDimensionsInstallation sizeTooth parametersLoadWeightDedediDiHeHiHtFeNeVFiNiVmzDpx·m [mm][mm][mm][mm][mm][mm][mm][mm][-] [mm][-] [mm][-][mm][mm][kN][kg]3R25-I-050063452653733513811614859824184022418568340527502243R25-I-056069458659739513811614865824184622418580400530802403R25-I-063076465666745613811614872828185322818677462634502703R25-I-071084473674753413811614880828186122818690540638803003R30-I-08009647597705901721421829203622680362210606001054905003R30-I-09001064930941688172142182102036227803622887696861906003R30-I-100011641030104178017214218211204022880402210797901068906803R30-I-1120128411501161900172142182124040221000402210919101076808203R40-I-125014451200121098021017022013934526110745261471994141110012003R40-I-14001595135013601134210170220154345261257452614801150141240013003R40-I-16001795155015601328210170220174348261457482616841344161420015203R40-I-18001995175017601520210170220194348261657482616961536161590017503R45-I-20002221194519671692219177231215560331845603318951710182050024003R45-I-224024612273229519202191772312395603320856033161211936162310027003R45-I-250027212533255521782191772312655723323457233181222196182580030001. Our slewing bearings are crafted with excellence, adhering to the most rigorous standards, ensuring unmatched quality in every piece.Quality is the cornerstone of Luoyang Longda Bearing. We recognize that even the smallest flaw could result in substantial repercussions. Consequently, we begin with a meticulous selection of raw materials, launching an unwavering quest for excellence. Every batch of raw materials is subject to rigorous inspections to confirm their adherence to our stringent quality standards.Throughout the production of slewing bearings, our company has implemented a cutting-edge quality management system. This approach secures comprehensive inspection records and precise raw material analyses for each stage of production. We are proud to have achieved certification under the ISO 9001 quality management system in Germany, underscoring our commitment to quality.2. Our attentive customer service guarantees a seamless after-sales experience, leaving you worry-free."Elaborate manufacturing and serving the global" is not just a slogan, but a guiding principle deeply ingrained in every Longda employee. Our professional and dynamic team stands ready to provide comprehensive technical support and solutions. Whether it's product selection, installation, commissioning, or after-sales maintenance of slewing drive products, we ensure timely assistance for any customer needs.Our slewing bearings are versatile and can be applied across various sectors, including industrial automation, port cranes, mining and medical equipment, cement machinery, wind power, metallurgical machinery, the aviation industry, shield machines, construction machinery, stacker-reclaimer equipment, and radar systems.Luoyang Longda Bearing Slewing Bearing: The Reliable Foundation for Industrial OperationOn the vast stage of the industrial field, behind every precisely operating device, there is an indispensable and reliable support from key components. Luoyang Longda Bearing Slewing Bearing, as a leader in the industry, are ensuring the stable operation of numerous mechanical devices with their excellent quality and powerful performance.I. Enterprise Development History and BackgroundLuoyang, a city with a profound industrial heritage, is known as the "Cradle of China's Bearing Industry." On this land that has nurtured industrial miracles, Luoyang Longda Bearing came into being. Tracing back its development history, since its establishment, Longda Bearing has been on an arduous entrepreneurial journey with the dream of revitalizing the national bearing industry.In the initial stage of the company's establishment, it faced many challenges such as backward technology, outdated equipment, and a shortage of talents. However, the people of Longda did not flinch at all. With their dedication and love for the bearing business, they traveled around, learned advanced technologies, introduced key equipment, and recruited industry talents. After years of unremitting efforts, Longda Bearing has gradually emerged in the market, developing from an unknown small factory to an enterprise with significant influence in the field of bearing slewing bearings today.During the development process, Longda has always kept pace with the times, actively responded to national policies, and continuously adjusted its corporate strategy. From simple production and manufacturing at the beginning to the current full - industry - chain layout integrating R & D, production, sales, and service, Longda Bearing has achieved a qualitative leap. Every transformation and upgrading embodies the wisdom and hard work of the people of Longda and also witnesses the tenacious struggle and growth of the enterprise in the market competition.II. Exquisite Manufacturing Process(I) Strict Screening of Raw MaterialsRaw materials are the foundation of product quality, and Luoyang Longda Bearing Slewing Bearing are well aware of this. In the raw material procurement process, the company has established a set of strict screening standards and a supplier evaluation system. It only cooperates with top - tier raw material suppliers in the industry to ensure that each batch of steel meets high - quality requirements.For key indicators such as the chemical composition and physical properties of steel, Longda conducts strict tests. For example, when testing the carbon content of steel, the error must be controlled within a very small range because even a slight fluctuation in carbon content can affect the hardness and toughness of the steel. At the same time, the purity of the steel is required to be extremely high, and the content of impurities such as sulfur and phosphorus is strictly controlled to ensure a uniform internal structure of the steel and avoid defects such as cracks.(II) Precision Machining ProcessIn the processing link, Luoyang Longda Bearing Slewing Bearing adopts a series of advanced precision machining technologies. The company has introduced internationally leading CNC machining equipment, which features high precision and high stability and can achieve the processing of complex shapes.Taking the raceway processing of slewing bearings as an example, through high - precision CNC grinding machines, the surface roughness of the raceway can be controlled at an extremely low level, reaching a mirror - like effect. Such surface quality can effectively reduce the friction between the rolling elements and the raceway and improve the rotation accuracy and efficiency of the slewing bearing. At the same time, during the processing process, advanced on - line detection technology is used to monitor the processing size and accuracy in real - time. Once a deviation is found, adjustments are immediately made to ensure that each product meets strict tolerance requirements.(III) Strict Inspection ProcessQuality inspection is of utmost importance in the production process of Longda Bearing Slewing Bearing. The company has established a perfect inspection system, strictly checking every link from the incoming inspection of raw materials, to the semi - finished product inspection during the production process, and finally to the final inspection of finished products.In the finished - product inspection link, a variety of advanced inspection equipment and methods are used. For example, a high - precision three - coordinate measuring machine is used to accurately measure the various dimensions of the slewing bearing to ensure that the dimensional accuracy meets the design requirements. At the same time, the vibration characteristics of the product are detected through vibration detection equipment, and the vibration value must be controlled within the specified range to ensure the stability of the product during operation. In addition, multiple inspection items such as hardness testing and flaw detection are also carried out to ensure that the product has no quality hidden dangers.III. Excellent Product Performance(I) High PrecisionLuoyang Longda Bearing Slewing Bearing are renowned for their excellent high precision. In the design process, the stress conditions under various working conditions are fully considered, and through optimizing the structural design, the product can maintain extremely high rotation accuracy during operation.For example, in some medical equipment and optical instruments with extremely high precision requirements, Longda's slewing bearings can control the rotation error within the micron level. This benefits from its precision machining process and strict inspection process, ensuring that the dimensional accuracy and geometric tolerance of each component meet high standards. High - precision slewing bearings enable these devices to achieve accurate positioning and motion control, providing reliable support for medical diagnosis and scientific research.(II) High Load - Carrying CapacityIn the heavy - machinery field, such as large - scale cranes and port handling equipment, the load - carrying capacity requirements for slewing bearings are extremely high. Luoyang Longda Bearing Slewing Bearing have a strong load - carrying capacity through the use of special materials and optimized structural design.The internal rolling elements and raceways have undergone special heat - treatment processes, and their hardness and strength have been greatly improved. At the same time, the number and size of the rolling elements and the curvature radius of the raceway are reasonably designed, enabling the slewing bearing to evenly bear axial force, radial force, and overturning moment. In practical applications, Longda's slewing bearings can easily handle loads of several tons or even dozens of tons, ensuring the stable operation of heavy machinery under various working conditions.(III) Long Service LifeThe long service life of Luoyang Longda Bearing Slewing Bearing is a major advantage of its products. By strictly controlling the quality of raw materials, optimizing the processing technology, and adopting advanced lubrication technology, Longda has effectively extended the service life of slewing bearings.In terms of lubrication, the company has developed a special lubricating grease, which has good adhesion, anti - wear, and anti - oxidation properties. It can form a uniform lubricating film between the rolling elements and the raceway of the slewing bearing, reducing friction and wear. At the same time, the lubrication channels and sealing structures are reasonably designed to ensure that the lubricating grease can be evenly distributed in each friction part and prevent the intrusion of external impurities and moisture. Under normal use and maintenance conditions, the service life of Longda's slewing bearings is more than 30% longer than that of similar products, reducing the equipment maintenance cost and replacement cycle for customers.IV. Technological Innovation and R & D Strength(I) R & D Team and InvestmentLuoyang Longda Bearing Slewing Bearing attach great importance to technological innovation and R & D work and has formed an R & D team composed of senior industry experts and high - quality technical talents. Among the team members, there are not only engineers with many years of practical experience in the bearing field but also master's and doctoral students from well - known universities.To enhance R & D strength, the company continuously increases R & D investment, spending more than 8% of its operating income on technological R & D and innovation every year. It has purchased advanced R & D equipment and experimental instruments and established a complete R & D laboratory and test base. These hardware facilities provide good R & D conditions for the R & D team, enabling them to carry out research on various cutting - edge technologies and the development of new products.(II) Innovation Achievements and ApplicationsIn terms of technological innovation, Luoyang Longda has achieved fruitful results. The company has successively developed a number of core technologies with independent intellectual property rights, such as new slewing bearing structure designs, material optimization technologies for special working conditions, intelligent lubrication and monitoring systems, etc.These innovation achievements have achieved remarkable results in practical applications. For example, the intelligent lubrication and monitoring system developed by the company can real - time monitor parameters such as lubrication status, temperature, and vibration by installing sensors inside the slewing bearing. Once an abnormal situation is detected, the system will immediately issue an alarm and automatically adjust the lubrication strategy to ensure the normal operation of the slewing bearing. This technology has been widely applied in wind power generation equipment, effectively improving the operation reliability and maintenance efficiency of wind turbines and reducing the failure rate.(III) Industry - University - Research CooperationIn order to further enhance technological innovation capabilities, Luoyang Longda actively carries out industry - university - research cooperation. It has established long - term and stable cooperative relationships with many well - known domestic universities and scientific research institutions to jointly carry out technological R & D and talent cultivation.Through industry - university - research cooperation, the company can keep abreast of the latest technological trends and research results in the industry and combine the scientific research advantages of universities and scientific research institutions with the production practice of the enterprise. For example, a research project on high - performance bearing materials carried out in cooperation with a certain university has successfully developed a new type of high - strength and corrosion - resistant bearing material, which has been applied to some high - end products of Longda, significantly improving the performance and market competitiveness of the products.V. Wide Application Fields(I) Construction Machinery FieldIn the construction machinery field, Luoyang Longda Bearing Slewing Bearing are widely used in equipment such as excavators, loaders, and cranes. These devices need to perform frequent rotation, lifting, and other actions during construction, and have extremely high performance requirements for slewing bearings.Longda's slewing bearings, with their high precision, high load - carrying capacity, and long service life, can meet the use requirements of construction machinery under various harsh working conditions. For example, in large - scale excavators, the slewing bearing needs to bear huge excavation force and rotation torque, and Longda's products can stably transmit these loads, ensuring the efficient operation of the excavator. At the same time, its good sealing performance and anti - wear performance enable the slewing bearing to maintain a good working state even in construction sites with dust and mud splashing.(II) Wind Power Generation FieldWith the increasing global demand for clean energy, the wind power generation industry has developed rapidly. Luoyang Longda Bearing Slewing Bearing play an important role in wind power generation equipment, mainly applied to the yaw system and pitch system of wind turbines.In the yaw system, the slewing bearing needs to achieve the smooth rotation of the wind turbine nacelle to track the change of wind direction. Longda's yaw slewing bearings adopt a special gear ring design and high - precision processing technology, which can ensure the meshing accuracy and transmission efficiency of the gear ring, enabling the wind turbine to adjust its direction quickly and accurately. In the pitch system, the slewing bearing is used to control the angle of the blades to achieve the optimal power generation efficiency of the wind turbine. Longda's pitch slewing bearings have high - precision positioning performance and good dynamic response characteristics, which can meet the pitch requirements of wind turbines under different wind speeds.(III) Port Machinery FieldPorts are important hubs for cargo transportation, and the efficient operation of port machinery is crucial for ensuring the smooth flow of logistics. Luoyang Longda Bearing Slewing Bearing are widely used in equipment such as port cranes and gantry cranes.Port machinery usually operates under heavy - load and frequent start - stop working conditions, and has extremely high requirements for the load - carrying capacity and reliability of slewing bearings. Longda's port - machinery - used slewing bearings can withstand huge loads and frequent impacts through optimized structural design and the use of high - strength materials. At the same time, its advanced sealing technology and protective measures can effectively prevent the erosion of corrosive media such as seawater and salt spray, ensuring the long - term stable operation of the slewing bearing in the harsh port environment.(IV) Other FieldsIn addition to the above - mentioned fields, Luoyang Longda Bearing Slewing Bearing are also widely used in many fields such as mining machinery, agricultural machinery, medical equipment, and aerospace. In mining machinery, they are used in equipment such as crushers and mills; in agricultural machinery, they are applied to combine harvesters, tractors, etc.; in medical equipment, they are used in CT machines, nuclear magnetic resonance equipment, etc.; and in the aerospace field, Longda's slewing bearing technology is also applied in related equipment.VI. Market Competitive Advantages(I) Quality AdvantageLuoyang Longda Bearing Slewing Bearing always regard product quality as the lifeline of the enterprise. Through a strict quality control system and exquisite manufacturing process, each product is ensured to meet high - quality standards. Its products are superior to similar products in terms of accuracy, load - carrying capacity, and service life, winning the high recognition and trust of customers.In the market competition, the quality advantage is one of Longda's core competitiveness. Many customers, when choosing slewing bearing products, first consider the Longda brand because they believe that Longda's quality can provide reliable protection for their equipment.(II) Technological AdvantageContinuous technological innovation and strong R & D strength are another major advantage of Luoyang Longda in the market competition. The company continuously invests in R & D resources, overcomes industry problems, and launches innovative products and technologies. These technological innovation achievements not only meet the diverse needs of customers but also gain the initiative for Longda in the market.Compared with competitors, Longda can respond to market changes more quickly and launch products that adapt to new working conditions and new demands. For example, in the emerging offshore wind power generation field, Longda took the lead in developing slewing bearing products suitable for the harsh offshore environment, seizing market share.(III) Service AdvantageWhile focusing on product quality and technological innovation, Luoyang Longda also attaches great importance to customer service. The company has established a perfect customer service system, providing customers with a full - range, one - stop service from pre - sales technical consultation, to in - sales product customization and installation guidance, and then to after - sales maintenance and technical support.The professional service team responds to customer needs at any time and can promptly solve problems encountered by customers during the use process. Whether at home or abroad, as long as customers have needs, Longda's service personnel can arrive at the site within the shortest time. This high - quality service has won the praise of customers and also established a good brand image for Longda.(IV) Cost AdvantageAlthough Luoyang Longda Bearing Slewing Bearing have invested a large amount of resources in product quality and technological innovation, through optimizing the production process, improving production efficiency, and reasonably controlling costs, the company has effectively controlled costs while ensuring product quality.Compared with some foreign brands, Longda's products have a certain price advantage. At the same time, due to the long service life and low maintenance cost of its products, customers can save a large amount of costs during long - term use. This cost advantage makes Longda more attractive in the market competition, especially in the price - sensitive market segments.VII. Customer Cases and Reputation(I) Cooperation Cases with Well - Known Domestic Enterprises[Specific Enterprise Name 1] is a large - scale construction machinery manufacturing enterprise in China. For a long time, it has been facing the problem of unstable slewing bearing quality, which has seriously affected the market competitiveness of its products. After extensive investigations and comparisons, the enterprise chose to cooperate with Luoyang Longda Bearing Slewing Bearing.Longda customized a set of slewing bearing solutions for this enterprise according to the characteristics of its equipment and working conditions. After the product delivery, Longda's technical personnel also provided the enterprise with detailed installation guidance and training services. After a period of use, the enterprise feedback that Longda's slewing bearing products have stable performance, high precision, and long service life, effectively improving the reliability and production efficiency of its equipment. Since then, the two sides have established a long - term and stable cooperative relationship.(II) International Market Expansion CasesWith the development of global economic integration, Luoyang Longda Bearing Slewing Bearing actively expands the international market. [Specific Country Name 1] is an industrially developed country with extremely high requirements for the quality and performance of slewing bearing products. Longda successfully entered the market of this country through participating in international exhibitions and cooperating with local distributors.In the initial stage of entering the market of this country, Longda faced fierce competition from internationally renowned brands. However, with its excellent product quality and high - quality service, Longda gradually won the recognition of local customers. [Specific Enterprise Name 2] is a large - scale wind power generation equipment manufacturer in this country. After using Longda's slewing bearing products, it praised the performance and quality of the products. The enterprise said that Longda's products can be completely comparable to international first - tier brands, and are more advantageous in terms of price and service. Through cooperation with this enterprise, Longda's popularity and influence in the market of this country have been continuously enhanced, laying a solid foundation for further expanding the international market.(III) Customer Word - of - Mouth and EvaluationIn the minds of many customers, Luoyang Longda Bearing Slewing Bearing are synonymous with quality and reliability. Many customers have highly praised Longda's products after using them."Longda's slewing bearings are of very reliable quality. Our company's crane has been in use for many years, and the slewing bearing is still operating well without any problems. Moreover, their service is also very considerate. They can solve problems promptly when they arise, giving us no worries." - [Name 1 of the person in charge of a certain construction machinery enterprise]"In the wind power generation field, the requirements for the accuracy and reliability of slewing bearings are extremely high. Longda's products fully meet our requirements, and they are also very outstanding in technological innovation, providing us with many advanced solutions. We are very assured to cooperate with Longda." - [Name 1 of the technical person in charge of a certain wind power generation enterprise]These customer word - of - mouth and evaluations are the best testimony to Luoyang Longda Bearing Slewing Bearing's adherence to quality - first and customer - first for many years.VIII. Future OutlookLooking ahead, Luoyang Longda Bearing Slewing Bearing will continue to adhere to the business philosophy of "Innovation, Quality, Service" and continuously enhance the core competitiveness of the enterprise.In terms of technological innovation, the company will increase R & D investment, strengthen cooperation with universities and scientific research institutions, and carry
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