Gardner Spring MB0750-056 Belleville Disc Spring

Product Description

The GARDNER SPRING MB0750-056 is a Belleville disc spring engineered for high-load applications in compact axial spaces. This conical washer-style spring delivers 1380.55 pounds of load at full deflection of 0.0736 inches, making it well suited for applications that demand controlled, repeatable spring force in a small footprint. With a 0.75-inch outer diameter, a 0.38-inch inner diameter, and an overall assembled height of 0.07 inches, this disc spring is constructed from steel for durability under sustained compressive cycling. It is installed by mechanical assemblers, maintenance technicians, and precision assembly professionals across industrial, HVAC, and mechanical fastening applications.

This Belleville disc spring is used wherever axial preload, vibration dampening, or controlled deflection is required in a bolted or stacked assembly. The 3/8-inch bolt size compatibility makes it a direct fit for standard fastener assemblies in mechanical equipment, valve bodies, pump flanges, and similar hardware requiring consistent clamp load retention. It is suitable for both single-spring and stacked configurations depending on the load and deflection requirements of the specific application.

Key Features

• High load capacity of 1380.55 pounds at 0.0736 inches of deflection in a compact form factor
• 0.75-inch outer diameter and 0.38-inch inner diameter sized for 3/8-inch bolt assemblies
• Steel construction for reliable performance under repeated compressive cycling
• Low overall height of 0.07 inches allows use in tight axial clearance conditions
• Stackable design supports series or parallel configurations to tune load and deflection

Compatibility

Designed for use with 3/8-inch bolt size fastener assemblies. Suitable as an OEM-style replacement or new installation disc spring in mechanical assemblies requiring a 0.75-inch OD Belleville washer.

Installation Notes

Belleville disc springs are installed by qualified mechanical technicians familiar with spring stack assembly and fastener preload requirements. Always de-energize or depressurize the assembly before disassembly or spring replacement. Confirm correct stack orientation, as reversing disc orientation changes the effective load and deflection curve. Follow applicable equipment manufacturer torque specifications and relevant mechanical codes when reinstalling fastener hardware.