1217 Self-Aligning Ball Bearing 85mm ID 150mm OD 28mm Width for Industrial Machinery
The 1217 bearing, as a self-aligning ball bearing, plays a key role in various mechanical transmission systems. With its unique structural design and excellent performance, it is widely suitable for multiple industrial scenarios.
The 1217 bearing is equipped with two rows of high-precision steel balls as rolling elements. These steel balls undergo a precision grinding process, featuring excellent roundness and extremely low surface roughness, which ensures smooth operation during rotation and effectively reduces friction loss and vibration amplitude. Its internal structure is designed: the inner ring adopts a double-groove structure, which can accurately support the two rows of steel balls respectively, ensuring that the steel balls run stably in their respective grooves; the outer ring is set as a single spherical raceway. This spherical raceway works in conjunction with the two rows of steel balls, endowing the bearing with excellent self-aligning ability. When the shaft is deflected or small errors occur during equipment installation, leading to axis misalignment, the bearing can automatically adjust, compensating for angular deviations up to 3°, thus ensuring stable operation of the equipment and reducing additional stress and wear caused by misalignment.
The cage of the 1217 bearing is usually made of high-quality steel plates through a stamping process. This material and processing method make the cage lightweight while having good toughness. During the high-speed operation of the bearing, the cage can accurately guide the movement trajectory of the steel balls, avoiding collision and friction between the steel balls, ensuring uniform spacing between the steel balls, and maintaining the stability and low-noise characteristics of the bearing operation. For some special working conditions with high requirements for corrosion resistance, nylon cages are also used. Nylon cages not only have good self-lubricating performance, which can reduce friction between steel balls and the cage to a certain extent, but also can effectively resist chemical corrosion, further expanding the application range of the 1217 bearing.
With the special spherical outer ring raceway design, the 1217 bearing performs well in dealing with small deflections of the shaft, can automatically adjust the axis position, and effectively solve the misalignment problem caused by installation errors, shaft deformation and other factors. This feature greatly improves the stability of equipment operation, reduces the damage to the bearing caused by additional stress due to misalignment, significantly extends the overall service life of the equipment, and is especially suitable for application scenarios with high requirements for equipment stability.
The unique design of two rows of steel balls increases the contact points between the bearing and the load, making it have significant advantages in bearing radial loads and being able to cope with large radial forces. At the same time, to a certain extent, the 1217 bearing can also bear bidirectional axial loads. This excellent comprehensive load-carrying capacity makes it widely used in various mechanical transmission systems that need to bear complex loads, such as the slewing mechanism of cranes and the transmission shaft of textile machinery, providing a solid guarantee for the stable operation of the equipment.
The high-precision rolling elements and carefully optimized raceway design greatly reduce the friction resistance of the 1217 bearing during operation. This not only helps to improve the transmission efficiency of the equipment and reduce energy loss but also can effectively reduce bearing heating and extend its service life. In addition, in the high-speed operation state, the bearing can still maintain stability, with low vibration and noise levels, creating favorable conditions for the smooth operation of the equipment and meeting the application requirements with strict requirements for equipment operation stability and low noise.
The 1217 bearing provides a variety of sealing forms for users to choose from, including open (no seal), 2RS seal (double-sided rubber seal) and ZZ seal (double-sided metal dust cover seal). The open design is suitable for clean, dry working environments with low sealing requirements, facilitating installation and maintenance; 2RS seal can effectively block dust, moisture and impurities from entering the bearing, suitable for relatively harsh working conditions; ZZ seal is mainly used for dust prevention, preventing foreign objects from entering to a certain extent, suitable for general industrial environments. The diversified sealing options enable the 1217 bearing to flexibly adapt to various working scenarios and environmental conditions, expanding its application fields.
In industrial production, the 1217 bearing is widely used in various mechanical equipment, such as motors, reducers, fans, water pumps, etc. During the operation of the motor, its self-aligning performance can effectively compensate for the possible misalignment between the motor shaft and the load shaft, ensuring the stable operation of the motor and improving the working efficiency and reliability of the motor; in the reducer, the 1217 bearing can bear large radial and axial loads, ensuring the stability and accuracy of the reducer in the power transmission process; the working environment of fans and water pumps is often complex, and the 1217 bearing can operate stably under different working conditions with its good adaptability and load-carrying capacity, ensuring the normal operation of the equipment and providing strong support for the continuity of industrial production.
In the automotive industry, the 1217 bearing can be applied to key components such as the engine, transmission, and wheel hub of automobiles. Inside the engine, it is used to support important components such as the crankshaft, bear complex loads generated during engine operation, and ensure the stable operation of the engine; in the transmission, it helps to realize the smooth rotation and power transmission of gears, ensuring smooth gear shifting; in the wheel hub, the 1217 bearing can adapt to small deflections of the shaft caused by uneven roads during vehicle driving, ensuring stable rotation of the wheels and improving the safety and comfort of vehicle driving.
In the field of medical devices, some small diagnostic equipment and therapeutic instruments have high requirements for the accuracy, low noise and stability of bearings. The low friction and high precision characteristics of the 1217 bearing enable it to perfectly meet the operation needs of these devices, ensuring accuracy and reliability during the operation of the devices, providing stable power support for medical diagnosis and treatment, and guaranteeing the smooth development of medical work.
Office equipment such as printers and copiers require bearings to have the characteristics of low noise, high precision and long service life during operation. The 1217 bearing can operate stably in the transmission system of these office equipment, effectively reducing the noise generated during the operation of the equipment, ensuring the normal operation of the equipment, improving office efficiency, and contributing to the comfort and efficiency of the office environment.
Before installing the 1217 bearing, it is necessary to ensure that the installation environment is clean and dust-free, to avoid dust, impurities and other foreign objects entering the bearing, which may affect its normal operation. The processing accuracy and fitting dimensions of the shaft and bearing housing must be strictly controlled, and should be processed and selected in strict accordance with the recommended tolerance range. During the installation process, professional installation tools must be used, and direct knocking on the bearing is strictly prohibited to avoid damaging the bearing structure. The hot fitting method or press installation method can be adopted. During hot fitting, the bearing needs to be uniformly heated to 80℃ - 120℃, and close attention should be paid to temperature changes during heating to prevent changes in bearing material performance due to excessive temperature. After installation, it is necessary to carefully check whether the installation position of the bearing is accurate, and use professional instruments to detect radial and axial clearances to ensure that they are within the specified range, so as to ensure the installation quality of the bearing and subsequent normal operation.
Reasonable selection of lubricants according to different working conditions is crucial for the performance of the 1217 bearing. For general working conditions, NLGI Grade 2 lithium-based grease is a commonly used choice, and its filling amount should be controlled between 1/3 and 1/2 of the internal space of the bearing. Too much or too little grease may have an adverse impact on the normal operation of the bearing. In special working conditions such as high temperature, high speed or heavy load, it is recommended to use synthetic lubricating oil and equip a complete lubrication system to ensure that the bearing can always obtain sufficient and continuous lubrication during operation. At the same time, it is necessary to regularly check the quality and quantity of lubricants, and timely replenish or replace them to maintain a good lubrication state of the bearing and extend its service life.
Establishing a sound regular maintenance system is the key to ensuring the long-term stable operation of the 1217 bearing. The working state of the bearing can be monitored in real-time through vibration monitoring, temperature detection, noise analysis and other means to timely find potential fault hazards. It is generally recommended to conduct vibration detection once a week and temperature monitoring once a month. If abnormal bearing vibration, excessive temperature or abnormal noise is found during monitoring, the machine should be shut down immediately for inspection, in-depth analysis of the causes, and corresponding maintenance measures should be taken. In addition, it is necessary to keep the equipment operating environment clean, especially in dusty, humid and other harsh environments, to strengthen the sealing protection of the bearing, regularly clean up debris and dust around the equipment, reduce damage to the bearing from external factors, and ensure that the 1217 bearing is always in good working condition.
In summary, the 1217 bearing, with its unique structural design, excellent performance and wide applicability, plays an indispensable role in many industrial fields and mechanical equipment, providing a solid guarantee for the efficient and stable operation of various equipment.
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