SSC .2730" × 1.75" ID × 40.50" Torsion Spring – Left Wind – Orange

🇺🇸 Made in the USA

The Service Spring Corp .2730" × 1.75" ID × 40.50" left-wind torsion spring is a replacement counterbalance component for garage door systems requiring these exact specifications. Its role is to offset door weight through the torsion shaft and cable drum assembly, helping a correctly balanced door travel smoothly through its opening and closing cycle.

This spring is manufactured from coated, oil-tempered wire and supplied with winding and stationary cones installed. Orange wire-size identification corresponds to its .2730" wire diameter. The combination of wire size, coil diameter, body length, and wind direction determines whether it is appropriate for a particular door.

Specifications

Construction & Included Components

The oil-tempered wire forms the working spring body that stores mechanical energy when the assembly is properly tensioned. Its protective coating helps protect the surface during service, while regular maintenance remains necessary.

Both cones are installed on the spring. These provide the winding and fixed anchoring interfaces used in the torsion assembly. Other system components—including the shaft, cables, drums, bearings, and support brackets—are not included with this individual spring.

Common Applications

Intended for professional garage door repair and replacement where the approved specification calls for .2730" wire, 1.75" inside diameter, 40.50" body length, and left wind.

This is not a universal spring for a particular door width or opener model. Door construction, glazing, reinforcement, insulation, and other changes can affect the counterbalance requirement, making accurate identification essential before ordering.

Compatibility & Measurement

Verify the existing system’s requirements rather than relying on approximate measurements. Spring length is the relaxed coil body measurement, excluding winding and stationary cones. A wound spring’s length should not be used as the replacement measurement.

The 1.75" inside diameter refers to the coil opening. The installer must separately confirm the cone connections, shaft fit, anchor arrangement, and available clearance for safe operation.

This 40.50" spring should not be treated as interchangeable with a 45" spring simply because both use .2730" wire and a 1.75" inside diameter. Length changes spring rate and therefore changes the counterbalance calculation.

Wind Direction & Color Identification

Left wind describes the direction of the spring coils. Installation position depends on the torsion system’s configuration; side-of-door assumptions are not a reliable substitute for identifying wind.

Orange is the wire-size color code for .2730" torsion spring wire. It does not establish a door weight rating, required winding turns, or compatibility with another orange-marked component.

Spring Pairing & Lift Configuration

When this spring forms part of a two-spring assembly, both springs must be considered together. The technician should inspect the companion spring and determine whether replacing both is appropriate based on age, condition, and the intended counterbalance design.

Door weight, travel height, cable drums, and standard-, high-, or vertical-lift geometry must be included in selection. Do not assume that matching one dimension makes a spring suitable for a different lift arrangement.

Cycle Life & Maintenance

This spring carries a listed minimum rating of 10,000 cycles in the correct application. Each complete opening and closing counts as one cycle; actual service duration depends on usage and operating conditions.

Follow the manufacturer’s maintenance recommendations. Rough travel, a heavy door, cable irregularities, or a change in balance should prompt professional inspection.

Professional Installation & Safety

Installation and tensioning require a qualified garage door professional. Loaded springs and their connected hardware can release dangerous stored energy.

Do not loosen cones, cable drums, anchors, or bottom cable brackets under tension. Keep a door with a broken spring out of service until repaired, and have balance and opener safety functions checked afterward.

Order this spring for a confirmed .2730" × 1.75" ID × 40.50" left-wind replacement requirement.