How to replace bearings in motors: Hot topics and operation guides on the Internet in the past 10 days
Recently, motor maintenance, especially bearing replacement, has become a hot topic in the industrial field. The following is a compilation of relevant content that has been hotly discussed on the Internet in the past 10 days, combined with a structured operation guide, to provide you with a detailed analysis of the motor bearing replacement steps.
1. Statistics of hot topics in the past 10 days
| Topic keywords | Search volume (10,000 times) | Main discussion platform |
|---|---|---|
| Motor bearing life | 12.8 | Zhihu/Industry Forum |
| Bearing removal tools | 9.5 | E-commerce platform/Bilibili |
| Heating-free installation method | 6.3 | YouTube/Douyin |
| Bearing brand comparison | 15.2 | Tieba/professional review |
2. Core steps for bearing replacement
1. Preparation
• Tool list: puller, hydraulic jack, vernier caliper, torque wrench
• Safety protection: insulating gloves, goggles
• New bearing parameter verification (needs to completely match the original)
| Tool type | Specification requirements | Precautions for use |
|---|---|---|
| Bearing puller | Three claw type | The claw distance must be larger than the outer diameter of the bearing |
| Heating equipment | ≤120℃ | Avoid local overheating |
2. Disassembly process
① Cut off the power and remove the power cord
② Mark the end cap positioning mark
③ Use a puller to apply force evenly (note: hammering the bearing is prohibited)
④ Check the journal wear (tolerance should be ≤0.02mm)
3. Install new bearings
| Installation method | Applicable scenarios | Technical points |
|---|---|---|
| Heat stacking method | High power motor | Oil bath heating 80-100℃ |
| Cold pressing method | small motor | Pressure ≤ 5 tons |
3. Recent hot technology discussions
1.Disassembly-free detection technology: Use vibration analyzer to determine bearing status, search volume increased by 47% week-on-week
2.Ceramic bearing applications: Life extension solutions under high-temperature conditions have sparked heated discussions
3.Intelligent lubrication system: Becoming a new trend in preventive maintenance
4. Precautions
• The no-load current needs to be tested after the bearing is installed (fluctuation should be <5%)
• Check the temperature rise every 2 hours in the initial stage of operation (abnormality standard: > ambient temperature +25℃)
• The initial grease filling amount is 1/3-1/2 of the bearing cavity volume
Through the above structured operation guide, combined with current industry hot spots, the core technical points of motor bearing replacement can be systematically grasped. It is recommended to consult the maintenance manual corresponding to the motor model before operation to ensure operating specifications.
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