Value Collection 331-2002 Shell Reamer Arbor No. 4

Product Description

The VALUE COLLECTION 331-2002 is a No. 4 shell reamer arbor designed to mount and drive shell reamers in machining and reaming operations. It accepts shell reamers with a bore compatibility range of 21/32 inches to 25/32 inches and features a straight shank with a 1/2 inch shank diameter for secure chucking in a drill press, lathe, or milling machine. The overall length measures 9 inches, providing adequate reach for standard reaming setups. This arbor is used by machinists and toolroom technicians to precisely finish bored holes to specified tolerances when working with interchangeable shell reamer heads.

The 331-2002 arbor is suited for use in machine shops, toolrooms, and production environments where shell reamers are rotated to achieve precise hole sizing and smooth bore finishes. The No. 4 arbor designation corresponds to the standard shell reamer sizing system, making it a direct fit for appropriately sized reamer heads. It is appropriate for use in both manual and CNC machine setups where a straight-shank tool holder is the required interface.

Key Features

• No. 4 arbor number matches standard shell reamer sizing for reliable tool engagement
• Compatible with shell reamers ranging from 21/32 inches to 25/32 inches bore diameter
• 1/2 inch straight shank diameter for chucking in standard tool holders
• 9 inch overall length provides extended reach for deep or obstructed setups
• Single-piece construction supports accurate, chatter-resistant reaming

Compatibility

Designed to accept No. 4 shell reamers with a bore diameter compatibility range of 21/32 inches to 25/32 inches. Intended for use with machine tool setups that accommodate a 1/2 inch straight shank arbor.

Installation Notes

Installation is typically performed by a machinist or toolroom technician. Secure the straight shank firmly in the machine chuck or tool holder before operation and verify that the shell reamer is properly seated and locked onto the arbor drive. Power down and de-energize the machine before mounting or removing the arbor. Inspect the arbor and reamer mating surfaces for wear or damage prior to each use to maintain bore accuracy and operator safety.