Gardner Spring MU500-0180 Curved Disc Spring

Product Description

The GARDNER SPRING MU500-0180 is a curved disc spring designed to deliver high load capacity within a compact axial footprint. This style of disc spring - also called a Belleville washer - stores and releases energy under compressive load, making it essential in bolted joints, valve assemblies, and mechanical preload applications. The MU500-0180 has an outer diameter of 0.98 inches, an inner diameter of 0.525 inches, and an overall assembled height of 0.131 inches. It is rated to carry 11,724.9 pounds of load at its rated deflection of 0.04 inches. Mechanical assemblers, millwrights, and maintenance technicians working in industrial and OEM fastener applications are the typical installers.

This curved disc spring is suited for applications requiring consistent axial force in tight spaces where a standard coil spring will not fit. Typical uses include flange bolt load retention, vibration damping stacks, clutch assemblies, and precision preload systems. The 1/2 inch bolt size compatibility makes it a natural fit for standard fastener assemblies in industrial equipment, pumps, valves, and structural connections. It can be stacked in series to increase deflection or in parallel to increase load, giving engineers and technicians flexibility for a wide range of load and travel requirements.

Key Features

• High load rating of 11,724.9 pounds at 0.04 inches deflection in a sub-1-inch diameter package
• Outer diameter of 0.98 inches with inner diameter of 0.525 inches for 1/2 inch bolt compatibility
• Overall height of 0.131 inches allows use in space-constrained assemblies
• Steel construction for durability under repeated compressive cycling
• Stackable in series or parallel configurations to tune load and deflection

Compatibility

Sized for use with 1/2 inch bolts. Designed as an OEM-style curved disc spring replacement for industrial bolted joint, valve, and preload assemblies requiring a 0.98 inch OD disc spring.

Installation Notes

Installation is typically performed by mechanical technicians or millwrights during equipment assembly or maintenance. Always de-energize or depressurize the host assembly before disassembling fastener stacks or valve components. Verify stacking orientation - curved disc springs must be oriented correctly relative to load direction to achieve rated performance. Consult the equipment OEM documentation and applicable industry standards for torque and preload requirements specific to the host assembly.