218X2X23.5 black electrophoresis garage door torsion spring

1. Construction & Material • Made of spring steel for durability and tension retention. • Winding cones (at both ends) are die-cast aluminum—one for winding, the other stationary. 2. Color-Coding for Wind Direction • Red cone end = Right-wound spring (winds clockwise when installed on the left side). • Black cone end = Left-wound spring (winds counterclockwise when installed on the right side).(Note: Proper pairing is essential if using dual springs.) 3. Application & Selection Criteria • Designed for heavy garage doors, providing lifting force. • Must be selected based on spring dimensions (wire size, inner diameter, length) rather than door weight alone. • Regular-duty spring with a 12,000-cycle lifespan (typical for residential use; heavy-duty springs last ~20,000+ cycles). 4. Installation & Replacement • Used to replace worn/damaged torsion springs mounted above the garage door on the header. • Safety Warning: Torsion springs store extreme tension; improper handling can cause severe injury. Professional installation is recommended. 5.Additional Considerations • Cycle Life: 12,000 cycles ≈ 7–10 years for average use (open/close 5x/day). • Matching Springs: If replacing one spring in a dual system, ensure the new spring matches the existing one in wind direction, size, and torque. • Tools Needed: Winding bars, vise grips, and a ladder for safe installation. Would you like guidance on measuring an existing spring or determining the correct replacement size?

225X2X28 Automatic Torsion Spring Overhead Garage Door Spring with oil tempered surface treatment

1. Construction & Material • Made of spring steel for durability and tension retention. • Winding cones (at both ends) are die-cast aluminum—one for winding, the other stationary. 2. Color-Coding for Wind Direction • Red cone end = Right-wound spring (winds clockwise when installed on the left side). • Black cone end = Left-wound spring (winds counterclockwise when installed on the right side).(Note: Proper pairing is essential if using dual springs.) 3. Application & Selection Criteria • Designed for heavy garage doors, providing lifting force. • Must be selected based on spring dimensions (wire size, inner diameter, length) rather than door weight alone. • Regular-duty spring with a 12,000-cycle lifespan (typical for residential use; heavy-duty springs last ~20,000+ cycles). 4. Installation & Replacement • Used to replace worn/damaged torsion springs mounted above the garage door on the header. • Safety Warning: Torsion springs store extreme tension; improper handling can cause severe injury. Professional installation is recommended. 5.Additional Considerations • Cycle Life: 12,000 cycles ≈ 7–10 years for average use (open/close 5x/day). • Matching Springs: If replacing one spring in a dual system, ensure the new spring matches the existing one in wind direction, size, and torque. • Tools Needed: Winding bars, vise grips, and a ladder for safe installation. Would you like guidance on measuring an existing spring or determining the correct replacement size?