Abstract: This invention relates to an improved structure for a rack drive assembly adapted for use in a vehicle electric power steering assembly. The electric power steering assembly includes a steering member (32), a one piece integral ball nut and pulley member (70), a lone bearing unit (90), and an electric motor (60). The steering member (32) is disposed in a rack housing (30) and includes a rack portion (34) operatively connected to a vehicle steering wheel (12) and a screw portion (40). The one piece integral ball nut and pulley member (70) is operatively connected to the screw portion (40) of the rack portion (34) of the steering member (32) for effecting axial movement of the steering member (32) upon rotation of the vehicle steering wheel (12). The ball nut and pulley member (70) includes a ball nut portion (72) and a pulley portion (76). The lone bearing unit (90) is carried by the ball nut and pulley member (70) for rotatably supporting the ball nut portion (72) relative to the steering member (32).