To revive export of Alaskan steam coal to Korea and other export markets, Alaska Railroad Corporation increased the shiploading rate from 800 tph to 2,000 tph at the company's 22 year old Seward Loading Facility on Resurrection Bay, Alaska. Restricted space on the shiploader boom and harsh operating conditions (only 600 miles south of the Arctic Circle) prompted engineers to specify a 75 HP Rulmeca Motorized Pulley to drive the shuttle conveyor. Since the Motorized Pulley has a "narrow footprint" of 24 inch diameter and 47 inch face width, only minor changes were required to remove the old pulley and pillow blocks and exposed motor/gearbox system to accommodate the new drive.
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机译：为了恢复对韩国和其他出口市场的阿拉斯加动力煤出口，阿拉斯加铁路公司将其在阿拉斯加复活湾拥有22年历史的苏厄德装载设施的装船速度从800吨/小时提高到2,000吨/小时。装船机吊臂的狭窄空间和严酷的操作条件（仅在北极圈以南600英里处）促使工程师指定75 HP Rulmeca电动皮带轮来驱动梭式输送机。由于电动皮带轮的直径为24英寸，表面宽度为47英寸，因此“窄脚印”仅需进行很小的改动即可卸下旧的皮带轮和轴承座，并露出电动机/变速箱系统以容纳新的驱动器。
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