Numbering method for this series of gyration bearing is in accordance with the standard of JG/T66-1999:

Instructions: The gearless single-row ball type gyration bearing is composed of external gear type internal ring and internal gear type external ring of which the raceway center has the same diameter, and the stoppage and the oil hole thereof are arranged on the external ring.
External Gear Type (QW) Structure Chart (the thread T of the mounting hole can be set at the other end of the hole):

Internal Gear Type (QN) Structure Chart (the thread T of the mounting hole can be set at the other end of the hole):

Gearless Type (QU) Structure Chart (the thread T of the mounting hole can be set at the other end of the hole):


|