Gardner Spring MB1500-045-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB1500-045-S is a Belleville disc spring engineered for high-load applications in compact axial spaces. This conical washer-style spring delivers 483.2 pounds of load at its rated deflection of 0.027 inches, making it well-suited for bolt load retention, valve actuation, and preload assemblies. Manufactured from stainless steel, the MB1500-045-S measures 1.5 inches outer diameter and 0.755 inches inner diameter, with an overall assembled height of 0.093 inches. Licensed mechanical, industrial, and trade professionals specify this type of spring where consistent clamping force and corrosion resistance are required in tight-tolerance assemblies.

Belleville disc springs of this size and load rating are commonly used in HVAC equipment, plumbing valve assemblies, pump systems, and general industrial machinery. The 3/4-inch bolt size compatibility makes the MB1500-045-S a practical fit for flange bolting, shaft preloading, and vibration-damping stacks in both residential and light commercial mechanical systems. It is sold in a package quantity of six units per order.

Key Features

• Stainless steel construction provides corrosion resistance for wet or chemically exposed environments
• 483.2-pound load capacity at 0.027 inches of deflection for consistent preload performance
• 1.5-inch OD and 0.755-inch ID sized for 3/4-inch bolt applications
• Low profile at 0.093 inches overall height suits tight axial clearance designs
• Can be stacked in series or parallel to tune deflection and load characteristics

Compatibility

Sized for 3/4-inch bolt diameter installations. Designed as a direct-fit Belleville disc spring for mechanical assemblies requiring a 1.5-inch OD conical washer spring in stainless steel.

Installation Notes

Installation should be performed by a qualified mechanical or industrial technician familiar with spring stack assemblies. Always relieve system pressure and de-energize associated equipment before disassembling bolted or valve assemblies. When stacking multiple Belleville springs, verify orientation - parallel stacking increases load while series stacking increases deflection travel. Do not exceed the rated deflection of the spring, as over-compression can permanently set the disc and reduce load output.