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.
Torsion spring cones are primarily based on the inside diameter (ID) of the spring. A 2" set of torsion spring cones, for example, cannot be used with 1-3/4" or 2-1/4" ID springs. Another important characteristic of torsion spring cones is the wind. Left-wind cones, like the 6" winding cone pictured above left, must be used on left-wind springs. Likewise, right-wind cones, like the 3-1/2" winding cone pictured above right, must be used on right-wind springs. Some cones, like the 3-3/4" winding cone pictured above center, are considered to be dual wind - this means that they can be used with either left- or right-wind torsion springs of the corresponding inside diameter.
We offer pre-assembled cables for both 7' and 8' high torsion spring garage doors. The cables allow the tension on the shaft to lift the garage door.
For more door heights and cable options, including assemblies for Raynor garage doors, see the cable and fittings page.
IMPORTANT NOTE REGARDING LOCAL PICKUPS: DDM is considered a life-sustaining company because we are an internet retail company that provides essential products. Due to the recent outbreak of Coronavirus, however, we are changing our local order pickup policy at our West Chicago location. To pick up an order you will need to order first. The quickest way is to order in advance through our online shopping cart. There you can select the local pickup option. Or, you can call 630-293-1337 for assistance, to confirm availability of parts, and to place your order. Once ordered, your parts will be available for pickup in the lobby of our north side front entrance. Longer items will be picked up on the south side loading dock. Please honor the six foot social distancing rule. Thank you for your patience and understanding as we all navigate this challenge together. More information is available on our blog titled DDM Adjusts to the COVID-19 Coronavirus. In the same article you will also find documentation and an answer to the question: "Is a garage door repair company a life sustaining business?"