Lishui Hengyuan Bearing Manufacturing Co., Ltd., established in 2008, is located at No. 11 Ye'ao Road, Lishui Economic Development Zone, and occupies over 20,000 square meters. It is affiliated with Zhejiang Hualian Industrial Technology Co., Ltd. The company specializes in the research, development, manufacturing, and sales of spherical plain bearings and linear guides. Equipped with advanced processing equipment, the company is committed to providing high-quality products.
Our products include bearing housings, rod ends, radial spherical plain bearings, bolted needle roller bearings, linear bearings, linear guides, ball screws, cold-drawn steel, slides, ball joints, and other products. They are widely used in industrial machinery manufacturing, including automation equipment, automotive, engineering, textiles, tobacco, mining, metallurgy, robotics, and other industries.
Our Factory
Our 10,000-square-meter production facility is equipped with advanced production equipment, including guide rail grinders, slide grinders, CNC machining centers, heat treatment machines, CNC machine tools, wire drawing machines, shot blasting machines, fully automatic punching machines, and straightening equipment, to meet the processing needs of various bearing and guide components.
Our Market
Our products are exported to Europe, America, and Southeast Asia. We have established long-term partnerships with HAAS AUTOMATION INC. in the United States and Ward Group Agricultural Machinery in China. Through these partnerships, we are able to better understand the needs of the international market and ensure that our product design and production meet customer expectations, thereby further expanding our market share.
Our Certifications
We are ISO9001 certified and have been designated as a National High-Tech Enterprise, a Specialized and New Enterprise, and a Technology-Based Small and Medium-Sized Enterprise. We have also obtained intellectual property management system certification, demonstrating our superior quality and technology.
Bearing Product Frequently Asked Questions
Spherical Plain Bearings
Q: How to select the appropriate spherical plain bearings according to the application scenarios?
A: When selecting spherical plain bearings, it is necessary to comprehensively consider the load type (radial, axial, or combined load), operating temperature, motion form (oscillation, rotation, or sliding), and environmental conditions (corrosion, dust, etc.). For example, in construction machinery with high-impact loads, self-lubricating spherical plain bearings are recommended; for marine equipment at risk of corrosion, spherical plain bearings made of stainless steel are more suitable. If you are unsure, please contact our technical team and provide specific working condition parameters, and we will recommend the best model for you.
Q: What factors affect the service life of spherical plain bearings?
A: The service life of spherical plain bearings mainly depends on the load magnitude and frequency, operating temperature, lubrication condition, and correct installation. Overload, high-temperature environment, or insufficient lubrication will accelerate bearing wear. In addition, improper operations during installation, such as excessive impact force or coaxiality deviation, will also significantly shorten its service life. Following the correct installation and maintenance guidelines can effectively extend the service life of spherical plain bearings.
Q: Do spherical plain bearings require regular lubrication?
A: Most spherical plain bearings are designed with self-lubricating properties and do not require additional lubrication for a certain period. However, under harsh working conditions such as high temperature, high load, or high speed, it is recommended to regularly check the lubrication status and replenish the lubricating grease according to the actual situation. We provide lubrication solutions suitable for different application scenarios. If you have any requirements, welcome to consult.
Linear Guides
Q: How to determine the accuracy grade of linear guides?
A: The accuracy grades of linear guides mainly include normal grade, high grade, precision grade, super precision grade, and ultra-precision grade. The selection should be based on the motion accuracy requirements of the equipment. For example, semiconductor manufacturing equipment has extremely high requirements for positioning accuracy, and usually super precision grade or ultra-precision grade guides are required; for general automated production lines, high-grade or precision-grade guides can meet the requirements. You can tell us the specific accuracy requirements of the equipment, and we will assist you in the selection.
Q: What precautions should be taken during the installation of linear guides?
A: When installing linear guides, it is crucial to ensure that the installation base surface is flat and clean. Professional tools should be used to tighten the installation bolts with the specified torque to avoid poor operation of the guides caused by loose bolts. At the same time, during the installation process, the straightness and parallelism of the guides should be ensured, and equipment such as a laser interferometer can be used for calibration. If you have any questions during the installation process, we can provide detailed installation instruction videos and technical support.
Q: How to solve the problem of noise in linear guides?
A: The noise generated by linear guides may be caused by various reasons, such as insufficient lubrication, improper installation, uneven load, or wear of the guide surface. First, check the lubrication system and replenish or replace the appropriate lubricating oil; second, recheck whether the installation meets the specifications and adjust the parallelism of the guides; if the noise still does not disappear, it is necessary to further detect the wear of the guides and sliders and replace them if necessary. Our after-sales team can provide professional fault diagnosis and solutions.
Linear Shafting
Q: What is the impact of the material of linear shafting on its performance?
A: Common materials for linear shafting include carbon steel and stainless steel. Carbon steel linear shafting has high strength and hardness and is suitable for general industrial applications; stainless steel linear shafting has excellent corrosion resistance and is often used in industries with high hygiene requirements such as food and medical, or in humid and corrosive environments. In addition, surface treatment processes (such as chrome plating) will also affect the wear resistance and rust resistance of the linear shafting. You can choose the appropriate material and treatment process according to the actual application requirements.
Q: How to install linear shafting and bearing blocks?
A: During installation, first fix the bearing blocks on the installation base surface to ensure the accurate position of the installation holes. Then pass the linear shafting through the bearings inside the bearing blocks, and pay attention to maintaining the parallelism of the linear shafting with the installation base surface. Avoid scratching the surface of the linear shafting during the installation process, and special tools can be used to assist the installation. After the installation is completed, a trial run is required to check whether the linear shafting runs smoothly. If necessary, we can provide customized installation fixtures and technical support.
Q: How to perform daily maintenance on linear shafting?
A: Daily maintenance of linear shafting mainly includes cleaning and lubrication. Regularly wipe the surface of the linear shafting with a clean soft cloth to remove dust and impurities; select the appropriate lubricating oil or lubricating grease for lubrication according to the usage frequency and working conditions, which can effectively reduce friction and wear. At the same time, regularly check whether there are any abnormal conditions such as scratches and wear on the surface of the linear shafting, and promptly discover and handle potential problems to ensure the normal operation of the equipment.
Ball Screws
Q: How to calculate the load capacity of ball screws?
A: The calculation of the load capacity of ball screws needs to consider parameters such as axial load, rotational speed, working stroke, and lead, and at the same time, a safety factor should be combined. Usually, it can be calculated by formulas or quickly calculated using the selection software provided by us. In addition, different installation methods (such as one-end fixed, two-end fixed) will also affect its load capacity. If you have any questions about load calculation, our engineer team can provide you with detailed calculation guidance and selection suggestions.
Q: What is the function of preloading ball screws? How to choose the preloading method?
A: The main function of preloading ball screws is to eliminate axial clearance and improve transmission accuracy and rigidity. Common preloading methods include single-nut variable lead preloading, double-nut shim preloading, and double-nut tooth difference preloading. Single-nut variable lead preloading has a simple structure, but the adjustment range of preload force is limited; double-nut shim preloading can accurately control the preload force by adjusting the shim thickness; double-nut tooth difference preloading is suitable for occasions with high-precision and high-rigidity requirements. The selection of the preloading method needs to be comprehensively considered according to the accuracy requirements, load characteristics, and cost budget of the equipment. We can recommend the appropriate preloading scheme according to your specific needs.
Q: How to troubleshoot the problem of poor transmission of ball screws?
A: When the transmission of ball screws is not smooth, first check whether the lubrication is good and replenish or replace the appropriate lubricating grease; second, check whether there are foreign objects entering or wear of the screw and nut; also check whether the installation is correct, including the coaxiality of the screw and the motor, and the installation accuracy of the support seat. In addition, excessive axial backlash of the screw may also cause abnormal transmission. Our after-sales service team can provide remote diagnosis and on-site maintenance services to quickly solve transmission failure problems.