杆端关节轴承是带有杆端或装于杆端的关节轴承，它属于关节轴承中的一支类。杆端关节轴承主要是由一个有外球面的内圈和一个有内球面的外圈组成，能承受较大的负荷。根据杆端关节轴承不同的类型和结构，可以承受径向负荷、轴向负荷或径向、轴向同时存在的联合负荷。杆端关节轴承一般用于速度较低的摆动运动，亦可在一定角度范围内作倾斜运动。根据其不同的类型和结构，可以承受径向负荷、轴向负荷或径向、轴向同时存在的联合负荷。杆端关节轴承广泛应用于工程液压油缸、锻压机床、工程机械、自动化设备，汽车减震器、水利机械等行业。
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.
要选择某种轴承类型，要确定需要的轴承尺寸，必须考虑的主要因素是负荷、轴承的负荷能力和预期使用寿命。选择杆端关节轴承时也是如此。
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标准可分成：
Its type can be divided into GB/T9161 standards.
弯杆开球头杆端关节轴承（类型代号为：SQ）；
The knuckle rod end ball joint bearing (type code: SQ);
直杆开球头杆端关节轴承（类型代号为：SQZ）；
Straight rod open end ball end joint bearing (type code: SQZ);
单杆开球头杆端关节轴承（类型代号为：SQD）；
Single pole open end rod end bearing (type code: SQD);
左旋内螺纹组装杆端关节轴承（类型代号为：SLLB）；
The left internal thread assembly rod end bearing (type code: SLLB);
左旋外螺纹组装杆端关节轴承（类型代号为：SALB）；
The outer joint of the left outer screw is mounted on the end joint bearing (type code: SALB).
左旋弯杆型杆端关节轴承（类型代号为：SLLB）；
The left-hand bending rod end joint bearing (type code: SLLB);
左旋单杆型杆端关节轴承（类型代号为：SQLD）；
The left single pole rod end bearing (type code: SQLD);
带圆柱焊接型杆端关节轴承（圆柱型）（类型代号为：SK）；
Cylindrical end type joint bearing with cylindrical welding (cylindrical type) (type code: SK);
带平底座焊接型杆端关节轴承（方型）（类型代号为：SF）；
Rod end joint bearing with flat bottom seat (Fang Xing) (type code: SF);
带锁口型杆端关节轴承（类型代号为：SLR）。
Articulated rod end bearing (type code: SLR).
杆端关节轴承维修有几种定期维修：
There are several regular maintenance for rod end bearing maintenance.
为了保证主机正常工作，根据主机的请求和轴承的设计理论与运用经历，设定一个维修周期，定期维修。
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.
毛病维修：在轴承发作毛病时，停机检查和维修。
Fault repair: stop and check and repair when the bearing breaks down.
预警维修：应用先进的轴承毛病诊断技术，对轴承的运用状态停止实时监控，在轴承发作毛病前提出预告，停止维修。 轴承在运转过程中，必然有声音、温度和振动等现象呈现。因而，关于运转中的轴承停止维护颐养，能够经过听、摸、观以及运用轴承毛病诊断仪器等办法发现轴承的异常变化，依据变化的状态来判别杆端关节轴承能否处于正常工作状态。
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.
