一種具有圓柱形滾動元件的減摩軸承,設計用於履帶滾輪組件。
weawolf class submarine ssn 23 cargo bay 3rd dplatform retractable walkway end item identification, support assembly, roller part name assigned by controlling agency, length: 7.13 inch width; 3.75 inchs , high: 2.75 inchs. special features