Sproket that has broken off. You can see the broken pin that is in the middle that has a missing sprocket head. This is caused from a heavy garage door that has been lifted by the motor for a considerable time. You can see the sleeve bearing that houses the assembly also worn away. You can see the filings that are piled up around the opening.

Repaired drive sprocket / gear kit. All fixed and ready for door lifting / closing.

Broken sprocket that has failed during a cycle. This is serious and will not let you open your door automatically. You need to have this part fixed on your garage door motor. Our technicians are able to fix this issue.