主轴和轴座间安装有自润滑轴承不用加油，没有磨损。
The compound bearing installed between the headstock and bearing seat does need any lubrication. No wearing.
本机器运行累计500小时左右时，请检查主轴承，必要时清洗，加入适量的润滑脂或更换。
After about 500 hours' operation, please check the main bearing. If it is necessary, please clean and add proper amount of grease or replace it with a new one.
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