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位于阿尔伯塔省北部的麦克默里堡的辛克鲁德(Syncrude)矿山的油砂使用四台大型电动索斗铲进行采掘和堆成料堆。由四台西德 Krupp O&K 料堆斗轮装载输送机(bu-cketwheel reclaimer)把油砂给到胶带运输机系统,再由该系统运到提取厂。每个斗轮上装有14个1码~3(0.7646m~3)斗。支持斗轮机的轴承是双球面抗磨滚柱轴承,它们装在一个空心轴上,带有迷宫式密封。辛克鲁德和美孚公司合作辛克鲁德油砂矿的作业条件非常恶劣:
The oil sands at the Syncrude mine in Fort McMurray, northern Alberta, use four large electric shovels for excavation and piles. Four oil sands are delivered to the belt conveyor system by four West Germany Krupp O & K bu-cketwheel reclaimer and transported to the pick-up plant by the system. Each bucket wheel equipped with 14 1 yards to 3 (0.7646m ~ 3) bucket. The bearings that support the bucket wheel are double spherical anti-friction roller bearings mounted on a hollow shaft with a labyrinth seal. Working with Sykrud and Mobil Operating conditions in the Sinkrued oil sands are very poor: