Printer squeaking

Hello, I have a problem with my 3d printer squeaking.The squeaking always happens when the extruder does circular movement near the center of the heatbed. The sound is coming from the left of the printer. I lubricated each part well, but after several prints it is still squeaking. How can I fix this?

I just noticed the sound is coming from the back of the left rod.

Thank you for help.