Value Collection SM2300312 Spiral Shell Reamer 3-3/16 in

Product Description

The VALUE COLLECTION SM2300312 is a spiral shell reamer designed for precision hole finishing in metalworking and machining applications. Built from high-speed steel, this reamer features a left-hand spiral flute geometry with a right-hand cutting direction, a combination that reduces chatter and promotes smooth chip evacuation during operation. The 3-3/16 inch cutting diameter and 4-1/2 inch overall length make it suited for enlarging and finishing large-diameter bored holes to tight tolerances. It is compatible with No. 11 arbor tooling and includes a 1-3/4 inch center hole. Machinists and toolroom professionals are the primary users of this tool.

This spiral shell reamer is used in production machining, toolroom work, and repair applications where large-diameter holes require accurate sizing and a smooth finish. The shell-style body keeps weight low while maintaining rigidity across the cutting length. It is mounted on a separate arbor rather than driven directly by a shank, which allows for tool flexibility across different machine setups. Typical applications include finishing bores in machine frames, housings, and structural components where standard reamer shanks are impractical.

Key Features

• High-speed steel construction for hardness and heat resistance during cutting
• Left-hand spiral flutes promote chip control and reduce vibration
• Right-hand cutting direction for standard machine spindle compatibility
• Shell-style body mounts on a No. 11 arbor for flexible machine setup
• 1-3/4 inch center hole for secure arbor engagement
• 3-3/16 inch cutting diameter for large-bore finishing work

Compatibility

Designed for use with No. 11 arbor tooling. Suitable for milling machines, boring mills, and lathes equipped to accept shell-style reamers of this diameter class.

Installation Notes

Shell reamers are installed and removed by machinists familiar with arbor-based tooling setups. Ensure the machine spindle is fully stopped and locked out before mounting or removing the reamer from the arbor. Verify arbor fit and seating before engaging the workpiece to prevent runout. Follow standard shop safety practices and machine tool operating procedures during use.