Garage Door Parts Diagram
Overhead garage door diagram
Garage doors have many moving parts that all work together to operate your door. If one part fails or loses efficiency, it can disrupt the entire functionality of your garage door.
Whether you’re troubleshooting a malfunction or simply curious about how your garage door operates, understanding a garage door parts diagram can be extremely helpful. This diagram aims to give you a visual representation of some of the parts of your garage door.
If you’re having issues with your garage door, contact our repair team at (865-622-4433), or leave your information at the contact us form and we will get back to you.
Parts of your garage door
This garage door diagram provides a detailed visual of how each component fits together. This knowledge can help homeowners:
- Identify potential problems before they become major repairs.
- Perform basic maintenance, such as lubricating moving parts and tightening hardware.
- Communicate effectively with a technician when professional repairs are needed.

1. Garage Door Drum
The garage door drum is a part of a garage door’s torsion spring system, which helps lift and lower the door smoothly. The drum is located at each end of the torsion shaft, and its primary purpose is to wind the cables connected to the bottom of the door. As the torsion spring unwinds or winds, it rotates the drum, which then winds or unwinds the cables, helping to evenly distribute the door’s weight and ensure smooth, balanced movement. This mechanism reduces strain on the garage door opener and helps prevent the door from becoming misaligned.
2. Garage Door Torsion Spring
3. Garage Door Belt/Chain
4. Garage Door Opener Bracket
5. Garage Door Opener
6. Garage Door End Bearing Plates
7. Garage Door Struts
8. Garage Door Hinges
9. Garage Door Extension Spring

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