Gardner Spring MB2500-080 Belleville Disc Spring

Product Description

The GARDNER SPRING MB2500-080 is a Belleville disc spring designed to deliver high load capacity in a compact axial space. This conical washer-style spring generates a calculated load of 615.8 pounds at its rated deflection of 0.055 inches, making it well suited for applications that require precise, repeatable clamping or preload force. The outer diameter measures 2.5 inches, the inner diameter measures 1.25 inches, and the overall assembled height is 0.16 inches. Constructed from steel, this spring is installed by mechanical contractors, maintenance technicians, and industrial assemblers working with bolted joint assemblies, valve actuators, and mechanical fastening systems.

This Belleville disc spring is used in applications where controlled axial load and deflection are critical. Common install scenarios include bolt preload assemblies, flange connections, and mechanical clamping fixtures in both industrial and commercial settings. The 1.25-inch inner diameter is sized to fit a 1-1/4 inch bolt. It ships in a package quantity of six, making it practical for job-lot replacement or initial build assemblies requiring multiple spring positions in a stack configuration.

Key Features

• 615.8-pound load rating at full rated deflection for consistent, high-force clamping
• 0.055 inches rated deflection provides predictable spring travel in tight axial spaces
• 2.5 inches outer diameter with 1.25 inches inner diameter sized for 1-1/4 inch bolt applications
• 0.16 inches overall height allows stacking in series or parallel to tune load and deflection
• Steel construction for durability in mechanical assembly and industrial fastening environments
• Package quantity of six supports multi-position stack assemblies or replacement inventories

Compatibility

Designed as a replacement or build-spec Belleville disc spring for bolted joint, flange preload, and mechanical clamping assemblies requiring a 1-1/4 inch bolt bore with a 2.5-inch outer diameter spring seat.

Installation Notes

Belleville disc springs are installed by mechanical technicians and industrial assemblers. Depressurize or de-energize any system before disassembling the bolted joint or clamping assembly. Springs may be stacked in series to increase deflection range or in parallel to increase load capacity - verify the intended configuration against the assembly drawing before torquing fasteners. Follow applicable ASME or equipment manufacturer guidelines for bolt torque procedures; do not substitute torque values from unrelated assemblies.