Garage Door Spring Forces

Garage door springs counterbalance the weight of the door to make it easy to open and close.

Garage door spring forces.

This video applies t. A properly sized spring will give a lifting force equal to the door weight when the door is fully closed and close to zero force when the door is fully opened. All dura lift springs meet the dasma standard rating of 10 000 plus door open and close cycles. Force spring exerts per 1 turn of the spring.

You can also always call us at 260 691 3822. Garage springs are under an extreme amount of tension and either stretch or torque providing enough force to help you move the door. The torque transfers from the shaft to the cable drum pulling the cable and the bottom of the garage door upward. Measure the outside diameter and then subtract twice the wire diameter.

Stainless garage door cables for torsion springs garage door lift cables 8 6 by 1 8 4 cables in one pack 4 3 out of 5 stars 45. It is not uncommon to have two different size springs. Gdn garage door torsion spring 36 length 2 inside diameter 0 262 wire size left wound 4 9 out of 5 stars 19. The spring to your right is a left wound spring and the spring to your left is the right wound spring.

Step 1 determine springs id inside diameter. Garage door extension springs stretch to provide lifting power for the door. Install new or use this pair of left install new or use this pair of left and right wound torsion springs to replace broken sectional garage door torsion springs. For example if a garage door weighs 100 pounds a spring force of 100 pounds needs to pull against the weight of the door.

If you prefer a matching set we can convert a mismatched set to a matching set. With most new garage doors there will be two torsion springs separated by a divider that s located at the midpoint of the door. Always convert torsion springs to a spring of equal or greater wire diameter. So if the spring to your left is broken you want to order a right wound spring.

They serve the same purpose of counterweights used to balance doors in centuries past and in many doors today. When installing the torsion spring the coils of the spring are wound up to create a lot of torque. Multiply the door weight by the hi moment arm and then divide by the number of turns. This torque is then applied to the shaft the metal tube that goes through the torsion spring.