Gardner Spring MB1500-045 Belleville Disc Spring

Product Description

The GARDNER SPRING MB1500-045 is a Belleville disc spring engineered for high-load applications in compact axial spaces. This conical washer-style spring delivers consistent clamp force and controlled deflection where conventional coil springs cannot fit. With a 1.5-inch outer diameter, a 0.755-inch inner diameter, and an overall assembled height of 0.093 inches, the MB1500-045 is sized for 3/4-inch bolt assemblies. It achieves a rated load of 9 pounds at 0.1654 inches of deflection, making it well suited for precision preloading, vibration damping, and joint sealing in mechanical assemblies. Installed by millwrights, pipefitters, and maintenance technicians across industrial and commercial trade applications.

Belleville disc springs of this size are commonly stacked in series or parallel configurations to tune deflection and load characteristics for a given assembly. The MB1500-045 fits 3/4-inch fastener applications in HVAC equipment mounting, valve assemblies, pump flanges, piping connections, and general mechanical fastening where axial spring force must be maintained under thermal cycling or vibration. Its small form factor makes it a reliable choice for confined fastener pockets in both new installations and field service replacements.

Key Features

• 1.5-inch outer diameter sized for 3/4-inch bolt applications
• 0.755-inch inner diameter provides proper bore clearance on standard fasteners
• Rated load of 9 pounds at 0.1654 inches of deflection for predictable spring behavior
• 0.093-inch overall height allows stacking in tight axial clearances
• Steel construction for durability under mechanical load and thermal cycling
• Stackable in series or parallel to adjust load and deflection as needed

Compatibility

Designed for use with 3/4-inch bolt assemblies in mechanical, HVAC, plumbing, and industrial fastening applications requiring controlled axial spring load.

Installation Notes

Belleville disc springs are installed by qualified mechanical or maintenance technicians. Confirm bolt size and bore clearance before installation, as improper sizing can cause uneven load distribution or spring failure. Power down or de-energize associated equipment and relieve system pressure before disassembling any fastened joint. When stacking multiple disc springs, verify orientation (series vs. parallel) against the design load and deflection requirements for the assembly.