1、 The selection and verification of micro motor bearings usually need to consider the following aspects:
1. Bearing load: Determine the radial and axial loads borne by the micro motor. Firstly, calculate the estimated load of the micro motor during operation, including radial load and axial load. Then, select the appropriate bearing type and size based on these load parameters.
2. Speed requirement: Determine the larger speed requirement for the micro motor. The speed of the micro motor will directly affect the selection of bearings, and it is necessary to ensure that the selected bearings can meet the required high-speed rotation requirements.
3. Bearing life: Calculate the required bearing life for the micro motor. Based on the working conditions and expected service life of the micro motor, use empirical formulas or related calculation methods to estimate the rated life of the selected bearing and compare it with the requirements.
4. Bearing materials and lubrication: Select bearing materials suitable for micro motor applications, such as ceramics, steel, etc., and ensure the use of appropriate lubrication methods (such as oil lubrication or grease lubrication).
5. Bearing heat and heat dissipation: Considering the possible heat generated during the operation of micro motors, appropriate bearing design and heat dissipation measures should be selected to ensure reliable operation of bearings in high-temperature environments.
2、 It is very important to ensure that the bearing size meets the requirements of equipment selection. The following are some common steps that can help you choose the appropriate bearing size to meet the equipment requirements:
1. Determine the load requirements of the equipment: Calculate the required radial and axial loads based on the design parameters and operating conditions of the equipment.
2. Determine the rotational speed requirements of the equipment: Determine the required larger rotational speed based on the design rotational speed and working conditions of the equipment.
3. Choose the appropriate bearing type: Based on the load and speed requirements of the equipment, choose the appropriate bearing type, such as deep groove ball bearings, cylindrical roller bearings, angular contact ball bearings, etc.
4. Calculate bearing size: Based on the load and speed requirements of the equipment, use relevant bearing calculation methods such as Hertz contact stress formula, L10 life calculation, etc. to calculate the required bearing size.
5. Reference standard size: Based on the calculated bearing size, refer to the relevant standard bearing size table and select the closest standard size.
6. Consider installation and space requirements: When selecting a suitable bearing size, it is also necessary to consider the installation and space constraints of the equipment to ensure that the bearings can adapt to the structure and size requirements of the equipment.
3、 To meet the life expectancy of bearings, the following steps can be followed:
1. Determine working conditions: Understand the working conditions of bearings in the equipment, such as load, speed, temperature, and other parameters.
2. Select the required lifespan: Based on the service life requirements and reliability requirements of the equipment, determine the expected lifespan of the required bearing (usually represented by the rated lifespan L10 of the bearing).
3. Calculate dynamic load: Calculate the dynamic load of the bearing based on the working conditions of the equipment and the type of bearing. The dynamic load is determined by factors such as equipment load, speed, and installation method.
4. Verification life calculation formula: Use the rolling bearing life calculation formula (such as ISO 281 standard) for life verification. These formulas involve parameters such as expected life, dynamic load, basic rated life, and correction factor.
5. Choose a suitable bearing: Based on the life calculation results, select a bearing model and size that can meet the requirements. While considering bearing life, factors such as bearing load bearing capacity, rotational speed capacity, and dimensional adaptability should also be considered.
6. Consider adjusting the bearing life: Depending on the actual application situation, some adjustments may be necessary to ensure the bearing life. For example, using bearings with a longer lifespan, adopting appropriate lubrication methods, and conducting good maintenance and upkeep.
4、 Bearing manufacturers or engineers to obtain more accurate bearing life estimates and selection recommendations.
The selection and design of bearings are important considerations to meet the noise requirements of equipment. Here are some common methods and precautions:
1. Bearing type: Choose a bearing type with lower noise. For example, ball bearings typically produce less noise than needle or roller bearings.
2. Bearing quality and manufacturing process: Select bearings with good quality and fine manufacturing process to reduce noise generation.
3. Lubrication method: Choosing an appropriate lubrication method, such as using low noise grease or oil lubrication, can reduce friction and noise.
4. Equipment balance: Ensure the dynamic balance of rotating parts of the equipment to reduce vibration and noise.
5. Elastic components: Add elastic components such as rubber pads, shock absorbing nuts, etc. to the equipment to reduce vibration transmission and noise.
6. Vibration reduction and sound insulation measures: Use vibration reduction pads, sound insulation covers, and other vibration reduction and sound insulation measures to reduce the transmission of equipment vibration and noise to a lower level.
7. Equipment structure and layout: Consider the structure and layout of the equipment, reasonably design and install bearings and other transmission components to reduce the generation and propagation of noise.
8. Equipment maintenance: Regularly perform equipment maintenance, including cleaning, lubrication, and checking the condition of bearings to ensure their normal operation and reduce noise.
If you have any questions, please consult Shanghai Anding Yitai 13621808094 for more accurate and detailed recommendations on bearing selection.
