Gardner Spring MB1000-035 Belleville Disc Spring

Product Description

The GARDNER SPRING MB1000-035 is a Belleville disc spring engineered for high-load applications in compact axial spaces. This conical washer-style spring measures 1 inch in outer diameter and 0.505 inches in inner diameter, with an overall assembled height (OAH) of 0.067 inches. Constructed from steel, it delivers 218.2 pounds of load at its rated deflection of 0.016 inches. Licensed mechanics, millwrights, and assembly technicians use Belleville disc springs where precise spring force must be maintained in a very short stack height, making them common in bolted joint preload, valve assemblies, and bearing retention applications.

This disc spring is suited for industrial and mechanical assembly environments where consistent clamp load or controlled deflection is required. The 0.505-inch inner diameter is sized for use with 1/2-inch bolt or shaft diameters, making it a direct fit in standard fastener-based preload stacks. It is appropriate for both single-spring and stacked configurations, depending on the load and deflection requirements of the application. Typical uses include pressure vessels, flanged connections, clutch assemblies, and precision mechanical joints.

Key Features

• Steel construction provides durability and consistent spring-back under cyclic loading
• 218.2-pound load capacity at 0.016-inch deflection for high-force, small-travel applications
• 1-inch OD and 0.505-inch ID sized for 1/2-inch bolt applications
• 0.067-inch OAH allows use in tight axial clearance designs
• Compatible with stacked or series/parallel disc spring arrangements

Compatibility

Sized for 1/2-inch bolt diameter applications per supplier specifications. Designed as a standard Belleville disc spring replacement or new-installation component in mechanical assemblies requiring controlled axial load and minimal deflection travel.

Installation Notes

Belleville disc springs are typically installed by millwrights, maintenance technicians, or mechanical assemblers. Depressurize or de-energize the assembly before disassembly or spring replacement. Confirm spring orientation and stacking arrangement against the original equipment specification before installation, as reversing or misarranging disc springs will alter load and deflection characteristics. Use calibrated torque tooling when disc springs are used as bolt preload elements to ensure consistent clamping force.