Hertel 8272312 Chucking Reamer 61/64 in Hss Straight Shank

Product Description

The HERTEL 8272312 is a straight-flute chucking reamer designed to finish-ream drilled or bored holes to a precise diameter of 61/64 inches (0.9531 inches decimal). Constructed from high-speed steel (HSS) with a bright, uncoated finish, it delivers consistent sizing accuracy in production and job-shop environments. The straight-cylindrical shank allows direct mounting in drill chucks, collets, and machine spindles. With an overall length of 10 inches and a flute length of 2-5/8 inches, this reamer handles a range of workpiece thicknesses while maintaining rigidity. It cuts in a right-hand direction and is suited for use on manual or CNC drilling and milling equipment.

This reamer is used for finish-reaming holes in metalworking applications where tight dimensional tolerances and smooth bore finishes are required. Typical use cases include fixturing, tooling plates, bushing installation, and precision assembly work in machine shops, manufacturing facilities, and maintenance repair operations. It is sized for the 0.70 to 1.00 inch diameter range and performs well in steel, cast iron, aluminum, and similar machinable materials at appropriate feeds and speeds.

Key Features

• 61/64 inch (0.9531 inch) reamer diameter for precision hole finishing
• High-speed steel (HSS) construction for durability across a wide range of machinable materials
• Straight-cylindrical shank for straightforward chuck and collet mounting
• Straight flute geometry suited for through-holes and stable cutting conditions
• Right-hand cutting direction, compatible with standard spindle rotation
• Bright, uncoated finish — no coating buildup to affect dimensional accuracy

Compatibility

Designed as a standard chucking reamer for use in drill presses, lathes, knee mills, and CNC machining centers equipped with a chuck or collet capable of accepting a straight-cylindrical shank in the 61/64 inch diameter class.

Installation Notes

A licensed machinist or qualified machine operator should install and operate this reamer. Ensure the machine spindle is fully stopped and de-energized before mounting or removing the tool from the chuck or collet. Secure the straight-cylindrical shank firmly to prevent slippage under cutting load. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain bore finish quality.