Gardner Spring MB0750-025 Belleville Disc Spring

Product Description

The GARDNER SPRING MB0750-025 is a Belleville disc spring designed for high-load applications in compact mechanical assemblies. This conical washer-style spring delivers a controlled load of 40 pounds at full deflection of 0.093 inches, making it well suited for applications requiring precise spring force in tight axial spaces. With an outer diameter of 0.75 inches, an inner diameter of 0.255 inches, and an overall assembled height of 0.049 inches, this disc spring fits standard 1/4-inch bolt configurations. Manufactured from steel, it provides reliable fatigue resistance and load stability across repeated compression cycles. Licensed mechanical contractors and industrial maintenance technicians are the typical installers.

This Belleville disc spring is used in mechanical fastening, valve assemblies, bearing preload setups, and vibration-dampening stacks where a high spring rate is needed within a minimal footprint. Its compact dimensions make it appropriate for both light industrial and precision mechanical applications. It is sold in packages of 12, making it convenient for service kits and maintenance inventory. The 1/4-inch bolt size compatibility positions it for use across a wide range of standard fastener-based assemblies in HVAC equipment, plumbing hardware, and general industrial machinery.

Key Features

• 40-pound load capacity at full deflection for reliable, repeatable spring force
• 0.093-inch deflection range in a compact 0.049-inch overall assembled height
• 0.75-inch outer diameter with 0.255-inch inner diameter for 1/4-inch bolt fitment
• Steel construction for durability and fatigue resistance under cyclic loading
• Packaged in quantities of 12 to support service and maintenance stocking

Compatibility

Designed for use with 1/4-inch bolt sizes in standard Belleville disc spring stack applications across industrial and mechanical assemblies.

Installation Notes

Installation of Belleville disc springs should be performed by a qualified mechanical technician familiar with spring stack configurations. Always relieve system pressure and de-energize any connected equipment before servicing spring assemblies. Disc springs may be stacked in series to increase deflection range or in parallel to increase load capacity - verify stack orientation per the assembly design specification. Avoid exceeding the rated deflection, as over-compression can permanently deform the spring and reduce load performance.