Gardner Spring MB1000-035-S Belleville Disc Spring

Product Description

The GARDNER SPRING MB1000-035-S is a stainless steel Belleville disc spring designed to deliver high load capacity in a compact axial footprint. With a 1-inch outer diameter, 0.505-inch inner diameter, and an overall assembled height of 0.067 inches, this conical washer-style spring generates up to 1,594.3 pounds of load at its rated deflection of 0.041 inches. Belleville disc springs of this type are used wherever precise spring force, space constraints, and corrosion resistance are all required simultaneously. Licensed mechanical contractors, millwrights, and maintenance technicians working with bolted assemblies, valves, and precision equipment are the typical installers.

This disc spring is sized for use with a 1/2-inch bolt, making it a direct fit in fastened joint applications where controlled preload or vibration damping is needed. Common applications include flange assemblies, pressure relief valve stacks, pump and compressor bolt joints, and industrial equipment subject to dynamic loading. It is well suited for both new installations and replacement service in demanding environments where standard flat washers are insufficient.

Key Features

• Stainless steel construction provides corrosion resistance for wet or chemically aggressive environments
• 1,594.3-pound load capacity at 0.041-inch deflection delivers high force in a minimal stack height
• 1-inch outer diameter and 0.505-inch inner diameter sized for 1/2-inch bolt applications
• 0.067-inch overall height enables use in tight axial clearance situations
• Can be stacked in series or parallel to tune load and deflection characteristics

Compatibility

Sized for 1/2-inch bolt applications. Designed as an OEM-style or aftermarket replacement Belleville disc spring for mechanical assemblies requiring a 1-inch OD conical disc spring in stainless steel.

Installation Notes

Installation is typically performed by licensed millwrights, mechanical contractors, or maintenance technicians. De-energize and relieve all system pressure before disassembling any bolted joint or valve assembly. When stacking multiple disc springs, verify series versus parallel orientation to achieve the intended load-deflection curve. Follow applicable torque specifications established by the equipment manufacturer or governing mechanical codes.