Gardner Spring MB1125-053 Belleville Disc Spring

Product Description

The GARDNER SPRING MB1125-053 is a Belleville disc spring engineered for high-load applications in compact assemblies. This conical washer-style spring delivers 30,668.1 pounds of load at its rated deflection of 0.019 inches, making it well suited for bolted joints and preload applications where significant clamping force is required in a small axial space. With a 1.125-inch outer diameter and a 0.38-inch inner diameter, the MB1125-053 fits standard 3/8-inch bolt sizes. Overall assembled height (OAH) is 0.08 inches. Mechanical contractors, millwrights, and maintenance technicians install these springs in flanged connections, valve assemblies, and precision mechanical systems.

Belleville disc springs like the MB1125-053 are used across industrial, commercial, and trade applications wherever controlled preload or vibration dampening is needed in a threaded fastener stack. Common install scenarios include pipe flange bolting, pump and compressor assemblies, electrical equipment mounting, and HVAC equipment structural fastening. The 3/8-inch bolt size compatibility makes this a direct fit for widely used fastener patterns in both light and heavy mechanical systems. Package quantity is 12 units per order.

Key Features

• High load capacity: 30,668.1 pounds load at 0.019 inches deflection
• Compact profile: 0.08 inches OAH with 1.125 inches outer diameter
• Designed for 3/8-inch bolt size fastener stacks
• Steel construction for durability in mechanical assemblies
• Sold in packages of 12 units

Compatibility

Designed for use with 3/8-inch bolt size fastener assemblies. Fits applications requiring a 1.125-inch OD Belleville disc spring in bolted joint, preload, and vibration dampening configurations.

Installation Notes

Installation is typically performed by millwrights, mechanical contractors, or maintenance technicians. Power down or de-energize any associated equipment before servicing fastener assemblies. Springs may be stacked in series or parallel to adjust load and deflection characteristics. Follow applicable mechanical and structural codes for the specific assembly type when torquing fasteners.