Siphiwe Tshabalala and Siphelele Mthembu got the goals as log leaders Chiefs moved 14 points clear of second-placed Ajax Cape Town, who will play their respective 14th League game of the season against SuperSport United tomorrow.
Chippa United and champions Mamelodi Sundowns are in action tonight and could close the gap on the unbeaten Amakhosi.
The opening half was a cagey affair, with minimal goal-mouth action.
Chiefs had the first chance in the 19th minute, as Kingston Nkhatha headed over at the near post after overlapping fullback Siboniso Gaxa was released down the right by Reneilwe Letsholonyane.
Tshabalala showed intent on the half-hour mark, but he shot waywardly on the turn after receiving a throw-in at the edge of the area by Gaxa.
At the other end, combative midfielder Thandani Ntshumayelo rattled the side-netting on the angle after bursting into the final third shortly before the recess.
The Glamour Boys raised the tempo after the interval, and struck in the 51st minute when Tshabalala stylishly steered in low cross from the right by Bernard Parker.
Stuart Baxter's men should have doubled the advantage in the 65th minute but Letsholonyane clipped the top of the woodwork with the goal at his mercy.
The Sea Robbers threatened on occasion through unsuccessful strikes from Daine Klate and Sifiso Myeni in the latter stages.
However, Mthembu put the result beyond doubt in stoppage time when he tapped in a right-wing cross from fellow substitute George Lebese.