Gardner Spring MU250-0145 Curved Disc Spring

Product Description

The GARDNER SPRING MU250-0145 is a curved disc spring designed for high-load applications in compact mechanical assemblies. This spring type generates significant axial force within a very small installed height, making it well suited for fastener preloading, vibration dampening, and precision clamping tasks. Constructed from steel, the MU250-0145 measures 0.551 inches outer diameter and 0.265 inches inner diameter, with an overall assembled height (OAH) of 0.06 inches. At its rated deflection of 0.0075 inches, it delivers a load of 4357.7 pounds. Mechanical assemblers, maintenance technicians, and precision equipment service professionals typically specify and install this component.

Curved disc springs of this profile are used across a broad range of industrial, HVAC, and mechanical equipment applications where consistent spring force must be maintained under bolt or shaft preload. The 1/4 inch bolt size compatibility makes this spring a practical choice for fastener stack assemblies in pumps, compressors, valves, and similar equipment. The small footprint and high load capacity allow engineers and technicians to manage clamp force in tight spaces where coil or wave springs are not practical.

Key Features

• High load output of 4357.7 pounds at 0.0075 inches deflection in a compact form factor
• Steel construction for durability in mechanical preload and clamping applications
• 0.551 inches outer diameter fits standard 1/4 inch bolt assemblies
• 0.265 inches inner diameter clears 1/4 inch fastener shanks cleanly
• Low profile 0.06 inches OAH allows stacking in space-constrained assemblies
• Available in packages of 10 for service stock and small-batch installations

Compatibility

Rated for use with 1/4 inch bolt size fastener assemblies. Designed as an OEM-style replacement or service part for curved disc spring applications requiring a 0.551 inches OD and 0.265 inches ID profile in steel.

Installation Notes

Curved disc springs must be installed with correct orientation relative to the load direction - consult the equipment OEM documentation before installation. De-energize or de-pressurize the assembly completely before disassembling fastener stacks that use disc springs. Standard hand tools and calibrated torque equipment are typically required; do not exceed the fastener torque values specified by the equipment manufacturer. Stacking multiple disc springs in series or parallel will alter deflection and load characteristics and should be calculated prior to assembly.