The German did not make a single bogey in round two when five birdies extended his advantage in this prestigious event which opens the three-tournament ‘Desert Swing’ on the European Tour.
Starting on the back nine, the reigning US Open champion played his opening nine holes in just 33 strokes before slowing down a little as he completed his round.
And Kaymer said: “The greens and my stroke are going well while I’m here.
“I didn’t miss many fairways which gives you the opportunity to go for the flags.
“I think the golf is two or three shots tougher in the morning than the afternoon so therefore I was really happy.”
World No 1 Rory McIlroy was starting his second round just as Kaymer, who remains well clear at the top of the leaderboard, was completing his.