B.M. Root Co. D170 Horizontal Hydraulic Borer

Serial Number: 7388 | Year of Mfg: 1958 | Condition: Operational

Overview

Available for purchase is a classic B.M. Root Model D170 Horizontal Multiple Borer. Manufactured in 1958, this heavy-duty machine is a testament to mid-century American engineering, built with a massive cast-iron frame designed to eliminate vibration and provide lifetime service.

This specific unit features the hydraulic feed system, a significant upgrade from earlier mechanical models, allowing for incredibly smooth and consistent boring strokes. Whether you are boring for dowels, drawer fronts, or furniture frames, the D170 provides the rigidity and power required for high-accuracy production in hardwoods and softwoods alike.

Technical Specifications

• Manufacturer: B.M. Root Company (York, PA)
• Model: D170 (Hydraulic Feed)
• Boring Capacity: Adjustable boring centers from 1" minimum to 30" maximum.
• Spindle Speed: Approx. 3,600 RPM for clean, splinter-free holes.
• Motor: 1 HP Industrial Induction Motor (currently configured for 3-Phase power).
• Table Adjustment: 8" distance from spindle noses to table at its lowest point.
• Control: Foot-pedal actuated for hands-free operation and rapid cycle times.
• Weight: Approx. 1,200 – 1,500 lbs (Solid cast-iron construction).

Key Performance Features

• Hydraulic Precision: The hydraulic table stroke provides a constant feed rate that prevents bit wandering and "burning," ensuring every hole is perfectly perpendicular and consistent in depth.
• Modular Head Design: The drive shaft allows for the easy addition or repositioning of boring heads. While currently configured as a single-spindle or multi-spindle unit (as equipped), it can support up to 6 heads for complex production runs.
• Cast-Iron Rigidity: Unlike modern aluminum or sheet-metal imports, the D170's heavy base absorbs the torque of large-diameter boring bits, maintaining accuracy even under heavy load.
• Time-Tested Reliability: Built in an era where machines were over-engineered for durability, Serial #7388 remains fully serviceable with standard industrial bearings and belts.