Yes. What you have in your hand is called the bobbin case. There's a spring that the thread goes under. Check this area for lint. When the thread breaks, what exactly happens? Pull the thread until it starts to get tight, but before it breaks and see if you can figure out exactly what is catching the thread. Does it look like the thread just gets caught under the spring? Another thing that snaps the thread is backlash. The thread gets wrapped around the spindle in the bobbin case.