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Milwaukee® Spring
Airgas Part #:MET40-50-8780
Manufacturer Part #:40-50-8780
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$8.21
Each
$8.21
/Each
Item Details
- The Milwaukee 40-50-8780 is a genuine Original Equipment Manufacturer (OEM) Ejection Spring designed for integration into industrial hole-sawing and core-drilling systems. It functions as a mechanical return spring that resides on a pilot drill bit assembly, delivering targeted linear force to eject waste cores or slugs from the interior cavity of carbide-tipped or hole-dozer cutters upon completion of a material-cutting stroke.
Features
- Automatic Zero-Downtime Slug Removal: Acts as a mechanical ejector to fire plugs clear of the cutter head instantly
- Optimized Cordless Efficiency: Reduces friction drag on the pilot bit to lower peak electrical current draw
- Extended Battery Runtime: Minimizes motor strain on M18 FUEL systems during core extraction
- True OEM Kinetic Synergy: Matches exact spring rates and free-length parameters for the 49-57-0035 system
- Structural Anti-Jam Design: Absorbs axial vibrations during high-torque startup to protect cutting edges
- Fatigue Resistance: Engineered to resist mechanical set and plastic deformation across thousands of cycles
- Debris Deflection: Coating resists moisture, cutting oils, and abrasive dust generated during metalworking
Specifications
- Manufacturer: Milwaukee Electric Tool Corporation
- Manufacturer Part Number (MPN): 40-50-8780
- Universal Product Code (UPC): 045242106523
- Airgas Part Number: MET40-50-8780
- Hanes Supply Identifier (HSI): 40-50-8780-11961
- Energy Avenue Part ID: 4294617
- OneSource Distributors Part ID: 4045542
- Component Classification: Power Tool Accessories / Replacement Mechanical Parts
- Spring Typology: Open-coil compression spring
- Resistance Type: Straight-line linear
- Substrate Material: Industrial-grade high-tensile spring steel wire alloy
- Metallurgical Properties: Heat-treated and tempered
- Surface Treatment: Corrosion-resistant protective coating
- Measurement Standard: Standard (SAE)
- Inner Diameter (ID): Sized for 1/4-inch or 3/8-inch pilot drill bits
- Free Length (L0): Optimized for cutting depths up to 1.62 inches
- Pitch & Coil Configuration: Uniform pitch with squared, non-ground ends
- Host Accessory Compatibility: Milwaukee 49-57-0035 Quick-Change Arbor
Applications
- Mechanical & HVAC Installations: Drilling entry lines through commercial ductwork and heavy gauge sheet metal
- Electrical Sub-Panel Construction: Core-drilling knockouts and conduit entry runs in steel junction boxes
- Plumbing & Pipefitting: Running piping channels through plastics, wood, and metal plates
- Heavy Industrial Metalworking: Continuous drilling into structural stainless steel, brass, and thick aluminum plates
- Tool Interfacing: Industrial carbide cutters and Milwaukee Hole Dozer Series hole saws
Product Attributes
Product Type
» Spring
