100" King Vertical Boring Mill | 50HP Variable Speed | 2007 Refurbished | VBM

100" King Heavy Duty Vertical Boring Mill

This 100" King Heavy Duty Vertical Boring Mill (Serial No. 1424) is a massive, high-rigidity machining solution designed for large-diameter boring, turning, and facing operations. This machine offers a rare combination of vintage American cast-iron durability and modern operational reliability following a significant refurbishment in 2007.

Machine Specifications

• Swing Capacity: 100" Maximum.
• Table Diameter: 84" – 96" (Estimated based on chassis).
• Main Motor: 50 HP Variable Speed Drive (500–1500 RPM).
• Power Requirements: 480V / 3-Phase.
• Heads: Dual swiveling ram heads on the cross-rail for multi-axis machining.
• Year of Manufacture: 1936.
• Year Refurbished: 2007.

Key Features & Enhancements

• Refurbished Performance: Updated in 2007, this unit features modernized electrical components and a 50 HP variable speed main drive, allowing for precise control over cutting speeds across various material types.
• Heavy-Duty Construction: Built during the peak of American machine tool manufacturing, the massive cast-iron frame provides the vibration dampening and rigidity necessary for heavy-interrupted cuts on oversized workpieces.
• Versatile Tooling: The dual-head configuration on the rail allows for simultaneous roughing and finishing or complex profiling operations.
• Proven Reliability: Listed under Lot 190, this machine has been a staple of industrial production and is ready for immediate integration into a heavy-job shop environment.

Dealer Notes

This King mill is an exceptional find for shops servicing the aerospace, energy, or heavy equipment sectors. Its 100" swing capacity places it in a specialized class of machinery that is increasingly difficult to source in good running condition.