d:
D:
B:
SI...E,ES

SI...E,ES

Can not be relubricated.

Can only be relubricated through the rod end housing. Can supply other rod ends with different pitch or accuracy of thread. 

For left-hand thread, suffix “L”is added to bearings number and thread sign,e.g. SIL20ES M20x1.5L- -6H.