Value Collection 375-1207 Boring Bar Set 10 Piece M35 Cobalt

Product Description

The VALUE COLLECTION 375-1207 is a 10-piece boring bar set machined from M35 high-cobalt steel, designed for internal boring operations on a lathe or boring mill. The set covers a minimum bore diameter range of 0.25 inches on the smallest bar up to 0.5 inches on the largest bar, with maximum bore depths ranging from 0.75 inches to 2.5 inches across the set. Overall lengths span 2-1/8 inches to 3-7/8 inches, and all bars share a common 0.5-inch shank diameter. The right-hand cutting direction and bright uncoated finish make these bars suited for machinists working in ferrous and non-ferrous materials where cobalt-grade tooling is preferred for heat and wear resistance.

This boring bar set is intended for use in machine shop environments handling precision internal diameter work. The graduated size range across 10 bars allows a machinist to match the appropriate bar to a specific bore requirement without changing shank holders. Typical applications include boring bearing pockets, bushing seats, and precision through-holes in production or toolroom settings. The included wood stand keeps bars organized and protects cutting edges between uses.

Key Features

• M35 cobalt steel construction for improved heat resistance and edge retention over standard HSS
• 10-piece set covering minimum bore diameters from 1/4 inch to 1/2 inch
• Maximum bore depth range from 3/4 inch to 2-1/2 inch across the set
• Uniform 1/2-inch shank diameter throughout the set for consistent tool holder setup
• Right-hand cut configuration for standard lathe and boring mill operation
• Wood storage stand included to protect cutting edges and keep the set organized

Compatibility

Designed for use in tool holders accepting a 1/2-inch round shank boring bar, common on engine lathes, turret lathes, and small horizontal boring mills in production and toolroom settings.

Installation Notes

Installation is performed by a machinist or toolroom technician. The machine spindle must be fully stopped and locked out before setting or adjusting boring bars in the tool holder. Bar overhang should be minimized to reduce chatter; extend only as far as the bore depth requires. Follow the machine manufacturer's tool-holding torque guidelines and verify bar runout before taking a finishing cut.