Higher cycle torsion spring assemblies 25 000 50 000 75 000 or 100 000 cycle torsion springs assemblies recommended with 1 25mm or 1 1 4 32mm solid steel shaft with full key way shaft mounted in self aligning flange bearings flexible 7 x 19 construction aircraft type.
Overhead door lift clearance track.
Used when there is ample headroom over 30 and additional workspace clearance is required.
121 mm to 12 in.
Lift clearance track standard.
11 5 8 14 1 4 thru 16 0 o h.
This option allows for no overhead track.
Used when ceiling height above the door is greater than 2 times the door height.
If the door is 8 ft.
51 mm to standard lift movements.
These provide the track configuration options of.
On the other hand if there is only 4 in.
When equipping a garage door with an electric door opener add 2 in.
304 mm available it is best to use a dual track system designed for low headroom.
It makes better use of the vertical space in your garage and gives you at least 12 15 more headroom in your garage by moving the garage door track closer to the ceiling.
Often used to help track avoid obstacles in the garage such as an entry pass door or other structural elements.
Torsion springs mount on a bar above the door while extension springs stretch down the side of the upper tracks.
Dimension charts for sectional track sectional doors track headroom and backroom clearance standard lift track headroom clearance dimensions door height centerline of shaft minimum headroom 2 track 15 radius thru 12 0 o h.
Garage doors use either torsion springs or extension springs to raise and lower the door.
In order to install torsion spring hardware we recommend a clearance of 12 in.
While the tracks are available in 2 inch and 3 inch widths the other basic variables for your sectional door needs include the opening height lift clearance and door height.
12 5 8 15 3 4.
Knowing garage door clearance requirements will help you avoid ordering the wrong garage door set up for your needs.
Optimal in equestrian buildings buildings with mezzanines or buildings with cranes.
2 track headroom hl 9 5 sideroom 4 5 required.
There is no horizontal track.
Tall an additional 8 9 of.
Track to follow roof pitch for standard lift and high lift.
A high lift garage door extends your garage door s track so that the door hugs the wall and goes up higher before the horizontal curve.
In the configuration only a vertical track is needed and the door moves up and bumps out from the wall only enough to accommodate the opener.
Bim objects revit for garage doors and commercial doors.