This standard specifies the external dimensions of four structural types of combined needle roller and thrust cylindrical roller bearings (hereinafter referred to as combined bearings). NKXR type-needle roller and thrust cylindrical roller combined bearing; NKXR...Z type-needle roller and thrust cylindrical roller combined bearing with outer cover; NKXR1IR type-needle roller and thrust cylindrical roller combined bearing with inner ring ; NKXR...Z ten IR type - there are needle roller bearings in the inner ring and thrust cylindrical roller bearings with outer cover. This standard applies to combined needle roller and thrust cylindrical roller bearings for design and selection by manufacturers and users.
GB/T 16643-1996 history
2015GB/T 16643-2015 Rolling bearings.Combined needle roller thrust roller bearings.Boundary dimensions
1996GB/T 16643-1996 Rolling bearings--Combined needle roller thrust roller bearings--Boundary dimensions