DEMARK (Beijing) Automation Technology Co., Ltd. was founded in Beijing , mainly engaged in selling various kinds of bearings, importing and exporting trade business. The main production are deep groove ball bearings, tapered roller bearings, spherical roller bearings, cylindrical roller bearings, self-aligning bearings, needle roller bearings, thrust ball bearings and so on. They are applied in ...




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Deep groove ball bearings are mostly used for each drive shaft in the gear reducer.The …