Left Right Wound Garage Door Torsion Spring with Winding Cone

Please send us: door width, door height, door weight (or panel count and material), track type (standard lift, high lift, or vertical lift), and your required cycle life rating. We will calculate the correct wire diameter, inside diameter, spring length, and winding direction and return a full specification within 24 hours.

The cycle rating indicates how many open-close cycles a spring is designed to perform before failure. Standard 10,000-cycle springs meet the residential baseline. 25,000-cycle and 50,000-cycle springs use heavier wire gauge and tighter tolerances - recommended for commercial doors, automatic systems with high daily usage, or buyers offering extended warranties to their customers.

Yes. For heavier doors (typically 16ft width and above, or doors over 200 lbs), a two-spring system is required. We supply matched left-wind and right-wind pairs with identical spring rates to ensure balanced door travel.

Standard finish is oil-tempered or zinc-phosphate coating. For buyers in coastal, high-humidity, or cold-climate markets (such as Canada, Russia, or coastal USA), we recommend our galvanized coating option for extended corrosion resistance.

Yes. We offer EZ-SET compatible winding cones as an option. Standard winding cones are pre-drilled for conventional winding bars. Please specify your preference when ordering.