Garage Door Torsion Spring – Left Wind .3065 Wire x 2.00" ID x 48" Length Coated Heavy-Duty Spring with Cones

Spring Specifications

• Made in the USA
• All springs rated for an industry standard minimum lifecycle of 10,000 cycles
• Springs come with winding and stationary cones installed and are stenciled and color coded for easy identification
• Coated & oil tempered wire

Description

The Garage Door SSC Left-Wind Torsion Spring (.3065 wire size x 2.00" inside diameter x 48" length) is an ultra heavy-duty, high-torque replacement spring engineered for large sectional overhead garage doors requiring maximum lifting capacity and long-cycle durability. Manufactured from premium oil-tempered spring steel and supplied with pre-installed winding and stationary cones, this spring delivers strong, stable counterbalance performance for demanding residential, commercial, and industrial-grade applications.

The .3065 wire diameter represents an extremely high torque class spring designed for heavier door assemblies, while the 48" extended-length configuration distributes load across more coils, reducing stress per turn and improving fatigue resistance and overall cycle life. The coated finish enhances corrosion protection for long-term reliability in varying environmental conditions.

The left-wind configuration is designed for installation on the right side of the center support bracket when viewed from inside the garage, working in opposition to the right-wind spring to create a balanced torsion system.

Key Features

• .3065" ultra heavy-duty wire diameter for maximum torque output
• 2.00" inside diameter torsion spring design
• 48" long-length construction for improved cycle life
• Left-wind (LW) configuration
• Coated finish for corrosion resistance and durability
• Oil-tempered spring steel for high strength and fatigue resistance
• Pre-installed winding and stationary cones
• Designed for heavy residential, commercial, and industrial-grade doors
• Smooth and controlled counterbalance performance under high load
• Engineered for extended-cycle operational stability

Compatibility

Compatible with:

• Heavy-duty sectional garage door systems
• Large residential, commercial, and industrial overhead doors
• 2.00" inside diameter torsion shaft systems
• Standard torsion cable drums, center bearing plates, and end bearing plates
• High-load long-length torsion spring configurations requiring distributed torque performance
• Major garage door brands including Clopay, Amarr, CHI, Wayne Dalton, Haas Door, Midland, and similar systems when specifications match existing setup

Important: This spring must be selected based on door weight, drum type, and full system torque engineering calculations. Wire size and length alone do not determine correct fit or performance.

Applications

• Replacement of broken or fatigued heavy-duty torsion springs
• Oversized residential garage doors
• Commercial sectional overhead doors
• Industrial-grade door systems with high cycle demands
• Systems requiring maximum torque and reduced coil stress
• Professional garage door installation, repair, and retrofit projects

Specifications

How This Part Fits Into the Garage Door System

The torsion spring is the primary load-bearing counterbalance component of a sectional garage door system. Installed on the torsion shaft above the door opening, it stores rotational energy as the door closes and releases that energy as the door opens, offsetting the full weight of the door and enabling controlled, safe movement.

This left-wind spring operates as part of a matched LW/RW system, where both springs work in opposite directions to distribute torque evenly across the torsion shaft. In heavy-duty systems, this balanced torque distribution is critical to maintaining structural integrity and preventing excessive wear on mechanical components.

This spring works together with:

• Torsion shaft
• Cable drums
• Lift cables
• Center bearing plate
• End bearing plates
• Garage door sections and hinges
• Reinforced track and hardware systems
• Garage door opener system

When properly matched, the system ensures stable lifting force, reduced strain on the opener motor, and controlled door travel even under extreme load conditions. If incorrectly sized or mismatched, the system can experience severe imbalance, excessive cable stress, accelerated hardware wear, and safety risks. Proper installation restores full system equilibrium and operational reliability.

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