Electric power steering comprising a worm gear

An electric power steering system comprising:

• a steering column to which a steering torque is applied by a driver;
• an electric motor to apply an assistance torque to said steering column in response to a measure of the steering torque applied to said steering column by the driver;
• and
• a housing wherein said electric motor acts on said steering column through a worm gear and a wheel gear,
• said electric motor having a motor output shaft on which said worm gear is provided, said motor output shaft having an end, said wheel gear being provided on a drive shaft wherein a first support assembly and a second support assembly are mounted in said housing and support said motor output shaft at spaced positions,
• said first support assembly including means to allow radial displacement of said end of said motor output shaft relative to said wheel gear, said first support assembly further including a bush having an eccentrically arranged recess and a bearing assembly supported in said recess,
• said second support assembly being adapted to allow angular displacement of said motor output shaft relative to said housing.