"1. The holder emits a 'shii Lee shii Lee...' sound: Analysis: This noise is caused by the vibration and collision between the cage and rolling elements, which can occur regardless of the type of grease used. It tends to happen more frequently when there is a large torque, load, or radial clearance. Solution: A) Improve the precision of the cage; B) Use bearings with smaller clearance or apply preload; C) Reduce torque and load, and minimize installation errors; D) Choose high-quality grease. 2. Continuous buzzing sound: Analysis: A beeping-like sound is produced during no-load operation of the motor, along with axial vibration. When starting or stopping, an 'Om' sound may be heard. This is typically due to poor lubrication, especially in cold weather or when both ends of the motor’s ball bearings are affected. Axial vibration and poor shaft alignment can lead to unstable vibrations. Solution: A) Use high-quality lubricating grease; B) Apply preload and reduce installation errors; C) Choose bearings with smaller radial clearance; D) Enhance the rigidity of the motor bearing. Note: Improving the curvature of 02 and 01 grooves plays a fundamental role in enhancing performance. 3. Paint rust: Analysis: Rust occurs when the bearing housing oil dries up, allowing volatile chemicals to corrode the bearing surface, outer groove, and raceway, resulting in abnormal sounds after corrosion. Features: Corrosion on the bearing surface is more severe than in the first case. Solution: A) Dry the rotor and chassis before assembly; B) Lower the motor temperature; C) Select a suitable paint model; D) Improve the ambient temperature where the bearing is placed; E) Avoid greases that cause rust, such as silicone or mineral oils; F) Use vacuum impregnation process. 4. Impurity-related noise: Analysis: Caused by dirt in the bearings or grease, resulting in irregular and unpredictable sounds. Features: The sound appears occasionally, sometimes loud, sometimes quiet, especially in high-speed motors. Solution: A) Choose high-quality grease; B) Improve cleanliness before greasing; C) Enhance the sealing of the bearing; D) Maintain a clean installation environment. 5. High-frequency vibration sound 'da da...': Features: The sound frequency changes with the bearing speed, primarily caused by surface waviness. Solution: A) Improve the quality of the raceway surface to reduce waviness amplitude; B) Minimize bumps; C) Adjust the correct preload and clearance, check the free end of the bearing, and enhance the accuracy of shaft and bearing installation. 6. Excessive heating: Features: The bearing temperature exceeds the acceptable range during operation. Analysis: A) Too much grease increases resistance; B) Too small internal clearance leads to excessive load; C) Installation error; D) Sealing friction; E) Bearing creep. Solution: A) Choose the right amount of appropriate grease; B) Correct preload and clearance, check the free end of the bearing; C) Improve bearing accuracy and installation methods; D) Enhance the sealing design. 7. Poor bearing feel: Features: When rotating the rotor, you feel impurities or a sticking sensation inside the bearing. Analysis: A) Excessive clearance; B) Incorrect fit with the shaft diameter; C) Channel damage. Solution: A) Keep clearance as small as possible; B) Choose the correct tolerance zone; C) Improve accuracy and reduce channel damage; D) Select the proper grease." (Word count: 532)

Smc Film Removal Machine

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