Value Collection 210-0405 Shell Mill Holder R8 Taper Shank

Product Description

The VALUE COLLECTION 210-0405 is an R8 taper shank shell mill holder designed for use in manual milling machines and machining centers equipped with R8 spindles. It accepts shell mills with a cutting diameter range of 4 to 5 inches and features a 1-1/2 inch pilot diameter for secure tool registration. With an overall length of approximately 6.42 inches (163 mm), this holder provides the rigidity and reach needed for face milling and surface finishing operations. Weighing 4.78 pounds, it is built to handle the lateral cutting forces typical of large-diameter shell mill work.

This shell mill holder is suited for job shop environments, toolroom machining, and production milling operations where R8 spindle tooling is standard. It is commonly used in Bridgeport-style knee mills and similar manual or CNC knee mill platforms. Typical applications include face milling of ferrous and non-ferrous workpieces, surfacing large flat areas, and squaring stock. It does not include through-coolant capability, making it best suited for dry cutting or flood coolant setups where coolant is applied externally.

Key Features

• R8 taper shank for direct spindle mounting in R8-equipped mills
• 1-1/2 inch pilot diameter ensures accurate shell mill seating and concentricity
• Accepts shell mills in the 4 to 5 inch cutting diameter range
• Overall length of 163 mm (approximately 6.42 inches) for standard reach applications
• No through-coolant — compatible with flood or dry cutting setups
• Weighs 4.78 pounds for substantial rigidity during heavy face milling passes

Compatibility

Designed as an OEM-style replacement or toolroom addition for R8 spindle milling machines that accept shell mills in the 4 to 5 inch cutting diameter range with a 1-1/2 inch pilot diameter arbor.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the milling machine spindle before mounting or removing the holder. Clean the R8 spindle bore and holder taper thoroughly before seating to ensure full contact and accurate runout. Verify shell mill fastening hardware is torqued according to the shell mill manufacturer's specifications before beginning any cut.