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Suitable for rotating and swinging movements under high loads and low speeds, as well as parts that frequently open and close under heavy loads and cannot be lubricated. It can be used for a long time without refueling under boundary lubrication conditions. Process refueling will greatly improve the service life of the shaft sleeve. The surface of the wear-resistant layer has specified oil pockets that can be used as oil storage holes. At present, it has been widely used in metallurgical machinery, mining machinery, water conservancy machinery, steam locomotives, construction machinery, agricultural machinery, steel rolling machinery, etc.