Value Collection 220-1561 Boring Head R8 Taper Shank

Product Description

The VALUE COLLECTION 220-1561 is an R8 taper shank boring head designed for use on milling machines equipped with an R8 spindle taper. It mounts via a 1-1/2-18 threaded connection, securing the boring head body to the shank for rigid, concentric operation during single-point boring operations. Machinists and tool-and-die technicians use this type of tooling to produce precise internal diameters in metal workpieces. The part weighs 2.35 pounds and does not feature coolant-through capability, making it suited for conventional dry or flood-coolant setups where through-spindle coolant is not required.

This boring head shank is intended for manual or CNC vertical milling machines fitted with an R8 collet-style spindle taper, the standard found on Bridgeport-style knee mills and many benchtop milling machines. It is used in job shops, maintenance machining environments, and tool rooms where close-tolerance bores must be produced without a dedicated jig borer. The threaded 1-1/2-18 mount accepts compatible boring head bodies threaded to that specification.

Key Features

• R8 taper shank interfaces directly with R8-spindle milling machines
• 1-1/2-18 threaded mount secures boring head body with a standard threaded connection
• No coolant-through passages, compatible with external flood or dry cutting setups
• Compact 2.35-pound assembly keeps spindle load manageable during boring operations
• Single-piece taper shank design promotes rigidity and minimizes runout

Compatibility

Designed for use with milling machines equipped with an R8 spindle taper. Accepts boring head bodies with a 1-1/2-18 threaded mount interface.

Installation Notes

Installation is performed by a machinist or toolroom technician. Power down and lock out the milling machine spindle before inserting or removing the taper shank. Clean the R8 taper bore and shank surface before seating to ensure full contact and minimize runout. Tighten the drawbar to the machine manufacturer specification before any cutting operation; do not run the spindle with a loose or partially seated taper.