Gardner Spring MB0750-056-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB0750-056-S is a Belleville disc spring designed to deliver high load capacity in a compact axial space. Manufactured from stainless steel, this conical washer-style spring measures 0.75 inches in outer diameter and 0.38 inches in inner diameter, with an overall assembled height of 0.07 inches. It is rated for a load of 287 pounds at full deflection of 0.063 inches. Belleville disc springs are used in bolted assemblies, valve components, and mechanical fastening systems where precise spring force and minimal stack height are required. Installation is typically performed by millwrights, mechanical contractors, or maintenance technicians working on industrial or commercial equipment.

This disc spring is suited for use in bolted joint assemblies with a 3/8-inch bolt size. Common applications include preload maintenance on fasteners, vibration damping in mechanical assemblies, and load distribution in flanged connections. The stainless steel construction makes it appropriate for environments with exposure to moisture or mild corrosive conditions. Its compact profile allows single or stacked configurations to tune load and deflection characteristics to application requirements.

Key Features

• Stainless steel construction for corrosion resistance in demanding environments
• 287-pound load capacity at rated deflection of 0.063 inches
• 0.75-inch outer diameter with 0.38-inch inner diameter for 3/8-inch bolt fitment
• Low-profile design at 0.07 inches overall height allows tight stack configurations
• Conical disc geometry provides high load in minimal axial space

Compatibility

Designed for use with 3/8-inch bolt size fastening assemblies. Suitable as a replacement or service disc spring in mechanical, industrial, and commercial bolted joint applications requiring this outer diameter and load rating.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician familiar with disc spring assemblies. Ensure all equipment is de-energized and depressurized before servicing any assembly containing this spring. When stacking multiple disc springs, verify orientation and stack sequence against the original design to achieve the intended load and deflection values. Refer to applicable mechanical codes and the equipment manufacturer's documentation for torque and assembly requirements.