Winding Bars

Technical Specifications

Installation and Adjustment Instructions

1 Preparation
(1) Wear protective gloves and safety goggles
(2) Inspect the torsion springs, winding bars, center bracket, and cable drum for any damage
(3) Ensure the door is fully closed and the tracks are clear

2 Install the Torsion Springs
(1) Mount the torsion springs onto the torsion shaft
(2) Secure both ends of the springs to the center bracket and end supports
(3) Ensure the spring direction matches the door winding direction

3 Install the Winding Bars
(1) Insert the winding bars into the red winding cones at both ends of the torsion springs
(2) Make sure the bars are firmly inserted and remain vertical
(3) Avoid direct contact with the steel coils of the springs

4 Adjust the Spring Tension
(1) Slowly rotate the winding bars and adjust the tension according to the door weight and balance
(2) Alternate adjustments on both ends to ensure smooth door operation
(3) Remove the winding bars safely after the adjustment is complete

5 Check the Cable Drum and Fasteners
(1) Ensure the cable drum is properly connected to the door panels
(2) Check that all screws and brackets (Lag Screw, Center Bracket) are tightened
(3) Manually test the door to ensure smooth operation

6 Safety Tips
(1) Torsion springs are under high tension; maintain a safe distance during operation
(2) Keep children and pets away from the door
(3) If you are not familiar with the procedure, contact a professional for installation or adjustment

Packaging for Export

For consolidated export orders, cartons can be secured in wooden crates or on fumigation-free plywood pallets according to shipment requirements.

Order Confirmation

Send drawings or approved specifications to Sunny at sunny@vts-spring.com or call +86 186 0226 1013.