桿端關節軸承是帶有桿端或裝于桿端的關節軸承，它屬于關節軸承中的一支類。桿端關節軸承主要是由一個有外球面的內圈和一個有內球面的外圈組成，能承受較大的負荷。根據桿端關節軸承不同的類型和結構，可以承受徑向負荷、軸向負荷或徑向、軸向同時存在的聯合負荷。桿端關節軸承一般用于速度較低的擺動運動，亦可在一定角度范圍內作傾斜運動。根據其不同的類型和結構，可以承受徑向負荷、軸向負荷或徑向、軸向同時存在的聯合負荷。桿端關節軸承廣泛應用于工程液壓油缸、鍛壓機床、工程機械、自動化設備，汽車減震器、水利機械等行業。
Rod end joint bearing is a kind of joint bearing with or installed on the rod end. It belongs to a class of joint bearings. The rod end joint bearing is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, which can bear large loads. According to different types and structures of rod end joint bearings, they can bear radial load, axial load or combined load with both radial and axial load. Rod-end joint bearings are generally used for low-speed swing motion, but also can make inclined motion within a certain angle range. According to its different types and structures, it can withstand radial load, axial load or combined radial and axial load. Rod end joint bearings are widely used in engineering hydraulic cylinders, forging machine tools, engineering machinery, automation equipment, automotive shock absorbers, hydraulic machinery and other industries.
要選擇某種軸承類型，要確定需要的軸承尺寸，必須考慮的主要因素是負荷、軸承的負荷能力和預期使用壽命。選擇桿端關節軸承時也是如此。
To select a bearing type and determine the required bearing size, the main factors must be considered are load, bearing load capacity and expected service life. The same is true when selecting rod end bearing.
其型式按GB/T9161標準可分成：
Its type can be divided into GB/T9161 standards.
彎桿開球頭桿端關節軸承（類型代號為：SQ）；
The knuckle rod end ball joint bearing (type code: SQ);
直桿開球頭桿端關節軸承（類型代號為：SQZ）；
Straight rod open end ball end joint bearing (type code: SQZ);
單桿開球頭桿端關節軸承（類型代號為：SQD）；
Single pole open end rod end bearing (type code: SQD);
左旋內螺紋組裝桿端關節軸承（類型代號為：SLLB）；
The left internal thread assembly rod end bearing (type code: SLLB);
左旋外螺紋組裝桿端關節軸承（類型代號為：SALB）；
The outer joint of the left outer screw is mounted on the end joint bearing (type code: SALB).
左旋彎桿型桿端關節軸承（類型代號為：SLLB）；
The left-hand bending rod end joint bearing (type code: SLLB);
左旋單桿型桿端關節軸承（類型代號為：SQLD）；
The left single pole rod end bearing (type code: SQLD);
帶圓柱焊接型桿端關節軸承（圓柱型）（類型代號為：SK）；
Cylindrical end type joint bearing with cylindrical welding (cylindrical type) (type code: SK);
帶平底座焊接型桿端關節軸承（方型）（類型代號為：SF）；
Rod end joint bearing with flat bottom seat (Fang Xing) (type code: SF);
帶鎖口型桿端關節軸承（類型代號為：SLR）。
Articulated rod end bearing (type code: SLR).
桿端關節軸承維修有幾種定期維修：
There are several regular maintenance for rod end bearing maintenance.
為了保證主機正常工作，根據主機的請求和軸承的設計理論與運用經歷，設定一個維修周期，定期維修。
In order to ensure the normal operation of the main engine, according to the requirements of the main engine and bearing design theory and application experience, set a maintenance cycle, regular maintenance.
毛病維修：在軸承發作毛病時，停機檢查和維修。
Fault repair: stop and check and repair when the bearing breaks down.
預警維修：應用先進的軸承毛病診斷技術，對軸承的運用狀態停止實時監控，在軸承發作毛病前提出預告，停止維修。 軸承在運轉過程中，必然有聲音、溫度和振動等現象呈現。因而，關于運轉中的軸承停止維護頤養，能夠經過聽、摸、觀以及運用軸承毛病診斷儀器等辦法發現軸承的異常變化，依據變化的狀態來判別桿端關節軸承能否處于正常工作狀態。
Early-warning maintenance: the application of advanced bearing fault diagnosis technology, real-time monitoring of the operation status of the bearing, in the bearing failure before the warning, stop maintenance. During the running of bearings, there must be such phenomena as sound, temperature and vibration. Therefore, the operation of the bearing to stop maintenance, can be heard, touch, view and the use of bearing fault diagnostic instruments to detect abnormal changes in the bearing, according to the state of change to determine whether the rod end joint bearing can be in normal working state.
