Value Collection ST0140116 Chucking Reamer 1-1/4 in Hss 4MT

Product Description

The VALUE COLLECTION ST0140116 is a chucking reamer designed for precision hole finishing in machine shop and industrial applications. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers accurate sizing of drilled or bored holes to tight tolerances. The reamer measures 1.250 inches in diameter with a 3-inch straight flute length and an overall length of 11.5 inches. The 4MT (No. 4 Morse Taper) shank provides a secure, self-holding fit in compatible spindles and tailstocks. With 10 straight flutes and right-hand cutting direction, it produces clean, consistent bore surfaces in a variety of workpiece materials. Machinists and toolroom technicians working on mills, lathes, and drill presses are the primary users of this tool.

This chucking reamer is suited for finishing through-holes and blind holes to close tolerances in ferrous and non-ferrous metals, as well as plastics and other machinable materials. It is commonly used in production machining, job shop work, and maintenance repair operations where accurate hole sizing is required. The 4MT shank makes it compatible with lathes and milling machines equipped with a No. 4 Morse Taper spindle or tailstock. It is sold individually and is appropriate for both manual and CNC-assisted operations where taper-shank tooling is specified.

Key Features

• 1.250-inch diameter with 10 straight flutes for smooth, accurate bore finishing
• High-speed steel (HSS) construction for durability across a range of machinable materials
• No. 4 Morse Taper (4MT) shank for secure self-holding engagement in compatible spindles
• Right-hand cutting direction — standard for conventional machine reaming operations
• Bright, uncoated finish suitable for use with standard cutting fluids
• 3-inch flute length provides adequate chip clearance for typical hole depths

Compatibility

Designed for use in lathes, milling machines, and drill presses fitted with a No. 4 Morse Taper (4MT) spindle or tailstock socket. Not a dowel pin reamer and not an over/under size reamer — intended for standard nominal sizing to 1.250 inches.

Installation Notes

This tool is installed and operated by machinists following standard toolroom safety practices. Ensure the spindle or tailstock socket is clean and free of chips before seating the Morse Taper shank. The machine spindle must be at a complete stop before inserting or removing the reamer. Apply an appropriate cutting fluid for the workpiece material to prolong tool life and improve surface finish — never run HSS reamers dry on ferrous metals.