[Application Features] JDB-7 self-lubricating wear-resistant steel sleeve, is reinforced products, with a high compression performance, the mosaic graphite (graphite inlay or not) work when the lubricating particles discharged when the shaft and sleeve Room produce a membrane, plays a single oil lubrication advantages over anti bite. [Application] specially adapted in lifting machinery support site. Example: roll Graders support, Crane support, etc. The main parameters Base material: GCr15 Base hardness: HRC58-60 friction coefficient: <0.17 maximum operating temperature: 350 ℃ Dynamic load limit: 250N / mm2 lm / min of limit load: 70N / mm2 Maximum sliding speed: 0.1m / s using a limit PV value: 2.5N / mm2 * m / s