Hertel 72033145 Chucking Reamer 0.3140 in Hss Straight Flute

Product Description

The HERTEL 72033145 is a straight-flute chucking reamer designed for precision hole finishing in metal and other rigid materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent bore sizing and smooth surface finish in drilling and boring operations. The reamer measures 0.3140 inches in diameter with a 6-inch overall length and a 1.5-inch flute length. The straight-cylindrical shank seats securely in drill chucks or collet holders, making it a reliable choice for machine shop and maintenance toolroom use. Machinists and tool-and-die technicians install this type of reamer for final-pass sizing of through-holes and blind bores.

This chucking reamer is suited for standard CNC machining centers, drill presses, and manual lathes where reaming operations are performed to achieve tight bore tolerances. Its 0.3140-inch diameter places it in the 0.3000 to 0.3499-inch range, a common size for close-tolerance fits in general metalworking, fixture work, and production machining. Right-hand cutting direction is standard for conventional machine setups.

Key Features

• 0.3140-inch reamer diameter for precise hole finishing
• High-speed steel (HSS) construction for durability across a range of workpiece materials
• Bright, uncoated finish for general-purpose metal cutting
• 6 straight flutes with right-hand cutting direction for smooth, consistent material removal
• Straight-cylindrical shank for straightforward chuck or collet mounting
• 6-inch overall length with 1.5-inch flute length for controlled reach and engagement

Compatibility

Designed as a standard chucking reamer for use in drill chucks and collet holders on CNC machining centers, drill presses, turret lathes, and similar machine tools that accept straight-cylindrical shank tooling.

Installation Notes

This reamer is installed by machinists in machine tool setups; power down the spindle and secure all guards before changing tooling. Seat the straight-cylindrical shank fully in the chuck or collet and verify runout before beginning a reaming pass. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality. Always ream to size from a pre-drilled pilot hole that is appropriately undersized for the reamer diameter.