Specifically designed for roll-up and sectional garage doors, storing torsional energy to counterbalance door weight and ensuring safe, smooth operation with extended service life.
Hot-wound from premium oil-tempered high-carbon spring steel for exceptional fatigue resistance, with a standard service life of 10,000 to 20,000 open/close cycles. The precision J-hook end enables quick installation onto torsion shafts and mounting brackets. Available in left-hand (LH) and right-hand (RH) winding directions — must be used in pairs to balance torque. Surface treatment options include zinc plating or electrophoretic black coating for corrosion protection, compatible with mainstream North American and European garage door sizing standards.
Application areas: Residential and commercial roll-up garage doors / Sectional overhead garage doors / Industrial warehouse roller shutter doors / Self-storage unit doors / Parking barrier counterbalance mechanisms
