For the investor who believes great businesses outperform the flavor of the month, loves dividend stocks, and is looking to turn their portfolio into a cash-generating machine, look no further than insurers: ACE Limited (NYSE: ACE), Aflac (NYSE: AFL), and Chubb (NYSE: CB).

Despite the difficulty of pricing risk, over the past few decades, all three companies have proven their underwriting discipline, carving-out strong market positions whether it be in accident and health, like Aflac, or predominately property & casualty, like ACE and Chubb. 

But to be considered a great dividend stock means jumping additional hurdles. The slideshow below shows five qualities that make ACE, Aflac, and Chubb rock-solid dividend stocks.