Since there have been about twenty dock leveler manufacturers over the decades, and since most of them use unique parts, it is best to begin by identifying the manufacturer of the leveler.
Usually, there is a label to identify the manufacturer and possibly the model.…
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There are a number of applications where the technician or homeowner needs to change the inside diameter of their springs. Our Torsion Spring Inside Diameter Converter page should help you decide if changing the inside diameter would benefit you.
One of the many reasons for changing the inside diameter is that older springs often have obsolete hardware or cones.…
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When the end bearing plate of a garage door is improperly secured, it is common to see the end of a shaft wear. Left unattended, the end bearing plate can remain pitched, and the bearing can cut off the end of the shaft.…
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The purpose of a dock leveler snubber assembly is to raise the lip and suspend it long enough so that the lip can be lowered onto the back of a trailer. In this description, you’ll be viewing a Serco dock leveler.…
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Customers frequently ask us if it is possible to install a LiftMaster 8500 Opener on doors with low headroom.
The answer, depending on the situation, is “yes,” “no,” and “yes, if you are mechanically adept.”
However, the answer is “yes” if, by low headroom, you mean a garage door with the double roller top fixtures.…
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Manufacturers make garage door springs from wire. Garage door springs break because every time you open or close the door, the wire bends.
This is easy to understand if you have ever bent a small wire or a paper clip in order to break it.…
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Clients frequently ask us, “Why is one of my garage door springs slinky and the other tight?” Or, “Why is one spring stiff and the other loose?” The answer lies in the pitch of the torsion spring wire.
When a spring coils, the wire normally winds at a 90-degree angle from the spool or rod it is wound around.…
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Before you replace the garage door cables on your door, make sure that you follow all safety precautions to prevent accidents from occurring. For additional information, view our tutorial titled Cable Installation.
The garage door torsion spring replacement is dangerous! Therefore, before you start to replace them, make sure that you follow all safety precautions to prevent accidents from occurring. More information on how to replace your garage door torsion springs is available on the DDM Garage Doors YouTube video titled by the same name.…
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Spring bumpers are often needed on residential garage doors to help assist the door to close from the open position when a jackshaft opener, such as the Liftmaster 8500, is used. Therefore, it is important to install push down spring bumpers when it is necessary.…
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Huge inventory of torsion springs for same or next day shipping! Here you will find all you need in the most common sizes of 1 3/4," 2," 2 1/4," and 2 5/8" inside diameter springs. Larger 3 3/4" and 6" inside diameter commercial and industrial springs may require a day or two to ship. You'll also find TorqueMaster Springs, Extension Springs, Self-Storage door springs, steel rolling door springs and springs for one piece single panel doors.
Shelves packed with every part you need to fix your doors.
Please note. Shipping times and costs have changed. Normal transit times are currently not guaranteed, even on next day and second day shipments. Shipping prices on items over eight feet have more than tripled.
