Value Collection 220-1210 Boring Head 2 Inch Manual

Product Description

The VALUE COLLECTION 220-1210 is a manual offset boring head designed for precision single-point boring operations on milling machines and machining centers. With a 2-inch body diameter and a 7/8-20 threaded mount, this Series F1 head accepts a 1/2-inch boring bar and delivers a direct reading graduation of 0.001 inches for repeatable diameter adjustments. The offset head design allows the operator to dial in bore diameter without removing the toolholder from the spindle. It is installed and operated by machinists and toolroom technicians in job shop and production environments.

This boring head covers a minimum bore diameter of 0.375 inches and a maximum bore diameter of 5 inches, making it suitable for a wide range of through-hole and blind-hole applications in ferrous and non-ferrous materials. Typical use cases include line boring, finish boring, and interpolated bore sizing on vertical and horizontal mills. The threaded 7/8-20 mount is compatible with standard boring bar arbors and milling machine spindle adapters that accept this thread specification.

Key Features

• Offset head type allows radial tool adjustment without spindle removal
• Manual actuation with 0.001-inch direct reading graduation for precise diameter control
• Boring bar hole diameter of 1/2 inch accommodates standard boring bars
• Bore range from 0.375 inches minimum to 5 inches maximum
• 7/8-20 threaded mount for secure spindle attachment
• Series F1 designation for use with compatible F1-series arbors and accessories

Compatibility

Designed for use with milling machines and machining centers equipped with a 7/8-20 threaded spindle arbor; accepts 1/2-inch boring bars in the Series F1 system.

Installation Notes

Installation and adjustment should be performed by a qualified machinist. Ensure the machine spindle is powered off and brought to a full stop before mounting or adjusting the boring head. Thread the head onto the arbor to the manufacturer-specified engagement depth and verify runout with a dial indicator before cutting. Use appropriate torque on the boring bar setscrew to prevent tool pullout under cutting loads.