Hardware & Accessories

Garage door torsion spring hardware includes spring anchor brackets, winding and stationary cones, cable assemblies, and spring blocking. Cables, spring anchor brackets, and cones are all integral parts of garage doors, while spring blocking is typically used in commercial and industrial environments.

Spring anchor brackets connect the stationary cone of the torsion spring to the garage door header. The bracket must be secured tightly to the header so the tension in the spring does not spin the bracket loose.

The size of a spring anchor bracket is determined by measuring the distance from the garage header to the center of the shaft, or to the center line (CL). Larger cable drums require larger end bearing plates. As a result, they need to be used with larger spring anchor brackets.

Some spring anchor brackets are slotted, as pictured above on the right (SAB-450). This makes replacing bearings much easier. The spring anchor brackets that are not slotted, pictured above on the left (SAB-438), can be used as idler brackets as well as spring anchor brackets. Idler brackets help to support the shaft when there is a lot of extra weight on a wider garage door.

Every torsion spring uses a stationary cone to keep that end of the spring from moving. The other end of the torsion spring uses a winding cone (pictured above) which secures the spring to the shaft. This cone applies the tension to the shaft and thus provides the lift for the garage door.