Gardner Spring 874C Extension Spring 1.746in Od 54.08lb

Product Description

The GARDNER SPRING 874C is a heavy-duty extension spring designed to store and release tensile energy in mechanical assemblies, industrial equipment, and trade applications. It features a 1.746-inch outside diameter, a wire diameter of 0.148 inches, and a spring rate of 13.52 pounds per inch. The maximum working load is 54.08 pounds, making it suitable for moderate-to-high load extension applications. This spring ships as a set of 3 pieces and weighs 0.86 pounds total. It is installed by mechanical technicians, HVAC service professionals, and industrial maintenance personnel wherever a controlled return force is required.

The 874C extension spring is used in residential and commercial mechanical systems where a tensile restoring force is needed. Common applications include HVAC damper assemblies, garage door hardware, industrial machinery linkages, and similar equipment requiring consistent load and return characteristics. The 8.5-inch overall length and precise wire diameter make it a well-defined replacement or service component for systems specifying this load and dimensional profile.

Key Features

• 1.746-inch outside diameter for accurate fitment in designed spring pockets or assemblies
• 0.148-inch wire diameter providing structural integrity at the rated load
• 13.52 lb/in spring rate for predictable, linear deflection under load
• 54.08-pound maximum working load supports moderate-to-high tension applications
• 8.5-inch overall length suits a range of standard mounting spans
• Sold as a set of 3 pieces per package

Compatibility

Designed as an OEM-style replacement extension spring for mechanical and industrial assemblies requiring a 1.746-inch OD, 8.5-inch overall length, and 54.08-pound maximum working load specification.

Installation Notes

Extension springs store energy under tension and must be handled carefully during removal and installation to prevent sudden release. Always relieve system tension and de-energize any connected electrical or pneumatic components before servicing. Use appropriate spring installation tools to seat hooks or loops securely at both anchor points. Follow applicable equipment manufacturer guidelines and relevant mechanical codes for spring replacement in your specific application.