WW Grainger (NYSE:GWW) reported Q1 EPS of $2.57, topping estimates of $2.52.Revenues in the quarter came in at $2.19 billion, vs. estimates of $2.20 billion.The company said it sees sales growth of 12% – 14%, vs. its prior guidance of 10% – 14%, and estimates of 13%.The company sees 2012 EPS of $10.40 – $10.80, up from its prior guidance of $9.90 – $10.65, vs. estimates of $10.60.