A
Axle Assembly: A horizontal member at the head
of the opening that supports the curtain and contains
the counterbalance spring(s).
Axle Collar: Cylindrical component used to center
the axle assembly between the support brackets. |
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B
Bottom Bar: A reinforcing member at the lower
edge of a bottom curtain panel.
Brackets: Support members above the top of the
wall opening to which the axle assembly is
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C
Commercial Door: A rolling sheet door typically
used in other than self-storage applications.
Counter Shutter: A door used to close an opening,
which closes on a counter-type sill.
Counterbalance Assembly: An assembly
consisting of torsion springs, spring anchors, and a
shaft, which is positioned on the axle assembly.
Curtain Latch: Locking device attached to the
exterior side of the curtain, which slides into the
guide, and is used to secure the curtain in the closed position and is equipped for padlocking.
Curtain Panel: Formed metal sheet consisting of
multiple corrugations with horizontal hems.
Curtain: An assembly of curtain panels seamed
together.
Curtain Stops: See Stops.
Cycle: An action on the door from the fully closed
position, to the fully open position, and returned to
the fully closed position.
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D
Dead Axle: Axle assembly that remains stationary
when the door is operated.
Door Only: Axle assembly, curtain and bottom bar.
Door Sheet: See Curtain Panel.
Drum: A cylindrical component attached to the
support shaft, which is used to support the roll
diameter of the curtain.
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E
Extended Brackets: Support brackets that increase
the distance between the door shaft and the header.
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F
Felt Strips: Vertical cloth adhered to the curtain to
reduce paint wear and noise.
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G
Guide: Vertical assembly in which the curtain
travels and that is fastened to the jamb, retaining the
edges of the door curtain and closing the space
between the curtain edges and the jamb.
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H
Hem: Interlocking “hooks” on the top and bottom
edge of the curtain panel used to create a seam.
Head Stops: See Stops.
Header Seal: Material attached to header with flap
resting on face of curtain when door is closed, and
designed to retard air infiltration over top of curtain.
Hood: A sheet metal housing that mounts
horizontally over the coiled curtain and brackets,
serving as a cover for the coiled curtain and closing
the door space between the door coil and the header.
Hood Baffle: A flap of material with one end
secured to the interior of the hood and the other end
resting on the curtain, and designed to retard air
infiltration over the top of the curtain and through
the hood.
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I
Interlock, External: An electrical switch to
prevent motor operation if locking device is
engaged.
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J
Jamb Clip: Steel angle used to secure guides to
concrete or masonry jambs.
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K
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L
Lift Clip: See step plate.
Live Axle: Axle assembly that turns with the door
when operated.
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M
Mini Door: A rolling sheet door typically used in
self-storage applications.
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N
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O
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P
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Q
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R
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S
Saddle: Component used to cradle and secure the axle to the brackets.
Seam: Method of permanently interlocking two
consecutive curtain panel hems for creation of the
continuous sheet door curtain.
Side Draft Stop: Material attached to the guides
used to close the gap between the door curtain and
the guide when the door is in the closed position.
Slide Bolt: Locking device on bottom bar, which
slides into guide or guide shoe, and is equipped
for padlocking. Mounted either inside, outside, or
both sides of the door.
Spring Anchor: A component in a
counterbalance assembly, that holds a spring in
place while it is under tension.
Spring Hook: A formed end of the
counterbalance spring wire used to facilitate
assembly.
Steel Mounting Plates: Heavy gauge steel plate
or angle used to secure support brackets when
field conditions do not have adequate structure to
anchor brackets.
Step Plate: Plate installed on the bottom bar used
to push the door tight to the floor with foot when
engaging locks, and also used to prevent bottom
bar from passing stops when curtain is raised.
Stops: Bars mounted at top of guides to prevent
bottom bar from traveling out of the guides when
the curtain is fully raised.
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T
Tensioning Device: A component attached to the
counterbalance shaft, which controls the spring tension as it is locked to the bracket.
Top Draft Stop: Material attached to the curtain,
and used to close the gap between the door curtain
and the header when the door is in the closed
position.
Top Sheet: Flat sheet or curtain panel attached to
the axle assembly.
Torsion Spring: A helical wound spring in a
counterbalance assembly, used to counterbalance
the curtain.
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U
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V
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W
Wear Strips: Material attached to the curtain or
guide to reduce paint wear and noise.
Wind Bar: Channel or bar attached to guide,
which engage windlocks under wind load.
Windlock: A component which is attached at
predetermined intervals to sheet ends to prevent
curtain from leaving the guides under wind load,
and which are used in conjunction with wind bars
inside the guides.
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XYZ
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