Rod end bearings classify by GB/T9161 standard: 1.Curved rod tee joint rod end bearings ( type code : SQ); 2.Straight tee joint rod end bearings ( type code : SQZ); 3.single rod tee joint rod end bearings ( type code : SQD) ; 4.left-handed internally-threaded rod end bearing assembly ( type code : SLLB); 5.L externally threaded rod end bearing assembly ( type code : SALB); 6.L curved rod type rod end bearings ( type code : SLLB); 7.L single rod type rod end bearings ( type code : SQLD); 8.with cylindrical welded rod end bearings (cylindrical type) ( type code : SK); 9.with a flat base welded rod end ( square ) ( types codenamed : SF); locking the rod end port type ( type code : SLR) Rod end bearings classify by size: 1.Rod ends EH series ( enhanced) ; 2.Rod ends EG series ( enhanced) ; 3.Rod ends inch sizes normal series ( codenamed Dimension Series Z); 4.Rod ends JK Series ( Dimension series code-named JK ) . The structure material code and clearance group code as plain bearings. Joint bearing applications Joint bearings are widely used in hydraulic engineering , metal forming machine tools, engineering machinery, automation equipment , automotive shock absorbers , irrigation machinery and other industries.