-杆端体带有左旋或右旋的内螺纹。
-由杆端体和向心关节轴承GE..E(S) 或 GE..ES 2RS组成。
-杆端体表面镀锌，SI..ES型杆端体有润滑油孔或油杯。
-Rod body with right or left-hand female thread.
-It is made up of a radial spherical plain bearing GE..E(S) or GE..ES 2RS and rod body.
-Surface of rod body zinc plated, housing of SI..ES with a
lubricating hole or grease nipple.
-若是左旋螺纹， 轴承型号需加" L "，例如：SIL 20 ES 。
-轴承孔径d≥15，也可制造-2RS结构，例如：SI 20 ES 2RS。
-带*的型号均不配油孔或油杯。-For left-hand thread, please add surffix " L ", e.g. SIL 20 ES.
-For bearings d≥15, SI..ES 2RS also available, e.g. SI 20 ES 2RS.
-Lubricating hole or grease nipple isn't available for the sizes marked " * ".
