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| Customization: | Available |
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| After-sales Service: | One-Stop After-Sales Support, Timely Order Deliver |
| Warranty: | 1 Year |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Product | Description / Application |
Torsion Spring | High-tension coil spring mounted on the shaft above the door opening to counterbalance the door weight. |
Extension Spring | Coil spring installed horizontally on both sides of the track; stretches to counterbalance the door. |
EZ-Set Torsion Spring Kit | Pre-assembled torsion spring with winding cone for quick and safe installation. |
Spring Winding Cone | Conical fitting with holes for winding bars, mounted on both ends of the torsion spring. |
Spring Anchor Bracket | Mounts the fixed end of the torsion spring to the track or wall. |
Center Bearing Plate | Supports the center bearing of a two-spring torsion system. |
End Bearing Plate | Supports the spring shaft at each end of the torsion system. |
Spring Shaft (Torque Tube) | Solid steel shaft that transmits torque from the spring to the cable drums. |
Winding Bar | Inserted into the winding cone to tension or release the spring safely. |
Shaft Bearing / Ball Bearing | Supports the rotating spring shaft; plain or ball bearing type. |
Cable Drum | Grooved drum that winds the lift cable; available in 3" to 6" diameters for different door sizes. |
Lift Cable | High-strength steel cable connecting the drum to the bottom bracket to lift the door. |
Safety Cable (Containment Cable) | Installed through the spring center to prevent injury in case the spring breaks. |
Cable Clamp | Secures the cable ends to the drum and the bottom bracket. |
Pulley | Guide wheel used in the extension-spring counterbalance system. |
Vertical Track | Vertical guide rail installed at the door jambs. |
Horizontal Track | Horizontal rail supporting the door sections in the ceiling area. |
Track Bracket (Jamb Bracket) | Fastens the track to the wall or door jamb. |
Roller (Nylon / Steel) | Wheel running inside the track; nylon or steel, 2" / 3" sizes, plain or ball bearing. |
Flag Bracket (Top Bracket) | Top hinge bracket attached to the top section of the door. |
End Hinge | Hinge connecting the bottom door section to the track rollers. |
Center Hinge | Hinge connecting the door sections in the middle of the panel. |
Bottom Bracket | Bracket at the bottom section that connects to the lift cable. |
Operator Bracket | Bracket connecting the door operator arm to the top door section. |
Strut (Reinforcement) | Horizontal reinforcement installed across wide door sections to prevent bending. |
Bottom Weather Seal | Vinyl / rubber seal fitted at the bottom edge of the door to keep out wind, rain and dust. |
Top Seal | Seal installed at the top of the door opening. |
Side Weather Strip | Seal fitted along the vertical track to reduce gaps. |
Hex Bolt / Lag Screw | Fasteners used for mounting tracks and brackets to the wall. |
Hinge Screw | Screws used for hinge installation on door sections. |
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