Reducer of electric power steering apparatus

A reducer of an electric power steering apparatus, the reducer comprising:

• a worm shaft having a first worm shaft bearing and a second worm shaft bearing respectively on a first end connected to a motor and an opposite second end;
• a gear housing receiving the first worm shaft bearing, the second worm shaft bearing, and the worm shaft;
• a first support member disposed between the second worm shaft bearing and the gear housing and having outer supporting portions on an outer side of the first support member to support an inner side of the housing and inner supporting portions on an inner side of the first support member to support the second worm shaft bearing;
• and
• a second support member coupled to the gear housing and supporting an outer side of the second worm bearing shaft through the first support member,
• wherein the first support member has first grooves recessed radially inward and arranged around an outer side of the outer supporting portion, and
• wherein the inner supporting portions protrude radially inward at the positions of the first grooves and are circumferentially spaced from each other.