Gardner Spring MB1500-107 Belleville Disc Spring

Product Description

The GARDNER SPRING MB1500-107 is a Belleville disc spring - also called a conical washer spring or coned-disc spring - designed to deliver a high load in a compact axial footprint. This spring measures 1.5 inches outer diameter and 0.755 inches inner diameter, with an overall assembled height of 0.134 inches. It is manufactured from steel and rated for a load of 6 pounds at its specified deflection of 0.024 inches. Belleville disc springs are used by mechanical technicians and industrial maintenance professionals wherever controlled preload, vibration damping, or take-up of thermal expansion is required in a fastened assembly.

This spring is suited for use with 3/4-inch bolt sizes, making it applicable to a range of mechanical, industrial, and light structural assemblies. Common install scenarios include stacking in series or parallel to achieve a desired spring rate or total travel, as well as single-disc use in flange joints, valve assemblies, and bolted connections where controlled axial force is needed. Its compact geometry allows it to fit in space-constrained applications where coil springs are not practical.

Key Features

• 1.5 inches outer diameter fits 3/4-inch bolt applications
• 0.755 inches inner diameter for proper bolt clearance
• 6-pound load rating at 0.024 inches deflection for predictable preload
• 0.134 inches overall assembled height enables low-profile stacking
• Steel construction provides durability under compressive cycling
• Sold in packages of 12 - suitable for stacked or multi-position assemblies

Compatibility

Designed for use with 3/4-inch bolt sizes in mechanical fastening applications requiring a conical disc spring. Consult the manufacturer load-deflection curve before stacking configurations.

Installation Notes

Belleville disc springs are typically installed by mechanical or industrial maintenance technicians using standard hand and torque tooling. Always de-energize or depressurize the assembly before disassembly or spring replacement. When stacking multiple discs, verify the series or parallel orientation against the required load and deflection specification, as reversing disc orientation changes spring rate significantly. Follow applicable equipment manufacturer guidelines and any relevant ASME or ANSI standards for bolted joint preload.