1976 Northfield No. 7 Double Surfacer | 25" x 8" Capacity | American Made | SN 762443-K

1976 Northfield No. 7 Heavy-Duty 25" x 8" Double Surfacer

This 1976 Northfield No. 7 is a world-class, American-made industrial double planer designed for high-precision, high-volume production. Built in Northfield, Minnesota, this "Double Surfacer" allows you to plane both sides of a board simultaneously, ensuring perfectly parallel surfaces in a single pass.

As a 1970s-era unit, it features the massive, vibration-dampening cast iron construction that has made Northfield the gold standard in woodworking for over a century. Unlike many discontinued brands, Northfield remains in business today, providing full factory parts support and technical assistance for this specific model.

Technical Specifications

• Model: No. 7 Double Surfacer
• Serial Number: 762443-K (Manufactured November 1976)
• Capacity: 25" Wide x 8" Thick
• Minimum Stock Length: 12" (Butted) / 21" (Not Butted)
• Cutterhead Type: High-Speed Steel (HSS) Straight Knife (4-Knife)
• Feed System: Four power-driven 4" diameter feed rollers
• Infeed Roll: Sectional infeed roll and chipbreaker (allows for multiple boards of varying thickness)
• Table Surface: Heavy-duty ribbed cast iron, precision ground
• Motors: Industrial 3-Phase (Top/Bottom/Feed)
• Approximate Weight: 7,800 lbs
• Footprint: 66" x 84"

Machine Highlights & Condition

• Simultaneous Processing: Independent top and bottom heads eliminate the need for two passes, doubling your shop's throughput.
• Factory Support: Parts, manuals, and technical expertise are still available directly from Northfield Foundry & Machine Co.
• Precision Bed: The table surface shows excellent care with minimal wear or scoring, ensuring consistent thickness across the full 25" width.
• Safety & Reliability: Equipped with sectional infeed fingers to prevent kickback and integrated cutterhead brakes for rapid stops.