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I found de origem of the problem. It was caused, as I suspect, by the time difference between the machines that were running the roscore and the tf transformation. I only synchronized them and I got the publication of the scan data stream on rviz.

Although I do no used, I think that I good solution is presented here.

For me, just as a first workaround, I used the command:

sudo ntpdate MACHINE_IP

where the MACHINE_IP variable contains the IP of the machine that used as reference to synchronize the other machines. (The command is executed in the machine that needs to be synchronized)