What are the specific differences in the heating installation times for bearings of different sizes with self-aligning rollers?
Release time:
2025-06-16
What are the specific differences in the heating installation times for bearings of different sizes with self-aligning rollers?
The heating installation time for self-aligning roller bearings of different sizes varies. Generally, the larger the bearing size, the longer the heating installation time. Here are some common reference standards:
- **Small-sized bearings (inner diameter < 50mm)**: When using an oil bath for heating, heat the oil in the bath to 80°C - 100°C and stir it. Then, fully immerse the bearing in the oil and maintain the oil temperature at 80°C - 100°C. The heating and holding time is typically 15 - 20 minutes. If induction heating is used, the holding time is half that of oil bath heating, i.e., 7.5 - 10 minutes. If a 100°C electric heating plate is used, just place the bearing for a few minutes, and it can be flipped over to ensure uniform heating.
- **Medium-sized bearings (inner diameter 50 - 100mm)**: For oil bath heating, keep the oil temperature at 80°C - 100°C, fully immerse the bearing in the oil, and the heating and holding time is usually 20 - 25 minutes. The holding time for induction heating is about half that of oil bath heating, i.e., 10 - 12.5 minutes. When using an oven for heating, maintain the temperature at 80°C - 100°C, and the holding time should be more than twice that of oil bath heating, i.e., over 40 - 50 minutes.
- **Large-sized bearings (inner diameter > 100mm)**: For oil bath heating, maintain the oil temperature at 80°C - 100°C, fully immerse the bearing in the oil, and the heating and holding time is generally around 30 minutes. For induction heating, the holding time is approximately 15 minutes. If an oven is used for heating, the holding time should be over 60 minutes.
These times are only rough references. The actual heating and installation time will also be affected by factors such as the efficiency of the heating method, ambient temperature, material of the bearing, fit diameter, and interference. For instance, using an efficient induction heater may take less time than traditional oil bath heating; in a low-temperature environment, heating time may need to be appropriately extended. Additionally, when starting the heating process, it is advisable to record the heating time and attempt installation. If assembly is difficult, it indicates that the heating time is too short and further heating is required; if installation goes smoothly and the interference of the bearing after installation is appropriate, the heating time can be appropriately reduced.
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