Milwaukee 40-50-8620 Belleville Spring Order Now

The MILWAUKEE 40-50-8620 is a Belleville spring, also known as a conical disc spring or washer spring, used as a precision-load fastening component in power tool assemblies. Belleville springs store and distribute mechanical energy under compression, providing consistent clamping force or preload within the tool mechanism they serve. This part is a genuine MILWAUKEE replacement component intended for use by qualified service technicians performing tool repairs and maintenance.

Belleville springs are used in power tool drills, drivers, grinders, and similar rotary or reciprocating tools where controlled axial preload is required in clutch, spindle, or gear train assemblies. This spring is suited to professional tool repair centers and field technicians performing authorized MILWAUKEE power tool service.

Key Features

• Conical disc spring design provides consistent axial load under compression
• Engineered as a direct OEM replacement component for MILWAUKEE power tools
• Compact form factor suited for integration into tight tool-internal assemblies
• Maintains preload force to support reliable clutch or spindle function

Compatibility

Designed as an OEM-style replacement Belleville spring for MILWAUKEE power tools and accessories requiring this component. Refer to the MILWAUKEE parts diagram for your specific tool model to confirm fitment before installation.

Installation Notes

Installation should be performed by a qualified power tool service technician. Disconnect and power down the tool fully, and remove any battery pack or unplug from power before disassembling the tool housing. Belleville springs must be oriented correctly relative to the load direction as shown in the tool service schematic — incorrect orientation can result in loss of preload or component damage. Reassemble per the manufacturer service documentation and verify tool function before returning to service.

Technical Specifications

• Component Type: Belleville Conical Disc Spring

Standard Information

• Brand: MILWAUKEE
• Manufacturer Part Number: 40-50-8620