7/16" Large Thread Quick Change Arbor, No Wobble, Shank

Milwaukee 49-56-9100 Large Thread Quick-Change Arbor – 7/16" Shank

The Milwaukee 49-56-9100 is a large-thread arbor designed for use with hole saws 1-1/4" and larger. Featuring a 7/16" shank, it is compatible with 1/2" and larger drill chucks. This arbor integrates a quick-change mechanism that allows for fast and secure swapping of hole saws without the use of additional tools.

Constructed from hardened steel, the arbor is engineered for extended service life in heavy-duty drilling applications. It is compatible with all brands of standard hole saws using the large-thread interface, eliminating the need for adapters. This model is optimized for productivity in electrical, plumbing, and mechanical trades where repeated hole saw changes are required.

Key Features

• Quick-Change System: Enables fast, tool-free changes between hole saw sizes to reduce downtime
• Large Thread Arbor: Designed for hole saws 1-1/4" diameter and larger
• 7/16" Shank: Compatible with 1/2" and larger drill chucks commonly used in high-torque drilling applications
• No Adapter Required: Direct connection to hole saw simplifies setup
• Hardened Steel Construction: Withstands frequent use and resists wear in demanding conditions

Technical Specifications

• Model: 49-56-9100
• Thread Type: Large thread for hole saws ≥ 1-1/4"
• Shank Size: 7/16"
• Chuck Compatibility: 1/2" and larger
• Material: Hardened steel
• Tool-Free Design: Yes

Application Considerations

This arbor is intended for use with bi-metal and carbide-tipped hole saws across wood, plastic, metal, and composite substrates. The quick-change function improves workflow during multi-size operations such as electrical rough-ins, conduit access holes, and pipe penetrations. Use with appropriate pilot drills is recommended for alignment and stability.

Recommended Users

• Electrical contractors performing panel or junction box installations
• Mechanical and plumbing trades requiring repetitive hole saw use
• HVAC professionals working on ductwork or penetrations through sheet metal