Johnson Controls D-9502-612 Extension Spring

Product Description

The Johnson Controls D-9502-612 is a helical extension spring designed for use in mechanical and HVAC-related machine assemblies. Extension springs store mechanical energy and exert a pulling force when stretched, making them essential components in actuator linkages, damper assemblies, and similar tension-return mechanisms. This spring ships at dimensions of 72.01 x 35.98 x 72.01 inches and is sourced as a direct OEM replacement part from Johnson Controls. It is typically installed by HVAC technicians or mechanical contractors working on commercial or industrial control systems.

This helical extension spring is suited for mechanical assemblies where a tension-return or load-bearing spring element is required. Applications commonly include damper actuator linkages, commercial HVAC control mechanisms, and other machine part assemblies where restoring force is needed along a linear axis. Installers should verify dimensional fit against the existing spring mount and attachment points before installation.

Key Features

• Helical extension spring design provides reliable tension-return force in mechanical assemblies
• OEM part number D-9502-612 ensures direct manufacturer traceability
• Large-format spring suitable for commercial or industrial scale assemblies
• Designed for use in actuator linkages, damper systems, and machine part applications

Compatibility

Designed as an OEM-style replacement spring for Johnson Controls mechanical and HVAC machine assemblies where part number D-9502-612 is specified.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. De-energize and lock out all associated equipment before removing or installing spring components. Verify that hook or loop attachment points are fully seated and secure before returning the system to service. Do not stretch the spring beyond its rated extension range during installation.