Hertel 79889176 Chucking Reamer 0.091 in Solid Carbide

Product Description

The HERTEL 79889176 is a solid carbide chucking reamer designed for precision hole finishing in machine tool applications. With a reamer diameter of 0.091 inches and a diameter tolerance of 0.0000 to 0.0002 inches, this tool delivers tight dimensional control in production environments. The straight flute geometry and right-hand cutting direction make it suitable for through-hole and blind-hole reaming in a range of workpiece materials. At 2 inches overall length with a 1/2 inch flute length, it fits compact toolholding setups on lathes, mills, and drill presses. The bright, uncoated finish keeps the surface geometry consistent with no added coating buildup at this fine diameter.

This reamer is used in precision machining applications where final hole size and finish matter — including toolroom work, fixture manufacturing, and production runs requiring consistent bore dimensions. The straight cylindrical shank seats directly into standard collets, drill chucks, and floating reamer holders. The 0.091 inch diameter places this tool in the small-diameter range, making it a common choice for instrument components, hydraulic valve bodies, and other precision-tolerance assemblies. It is typically run on CNC machining centers, manual mills, and turret lathes by machinists and toolroom technicians.

Key Features

• Solid carbide construction for rigidity and wear resistance at small diameters
• 0.091 inch reamer diameter with tolerance of 0.0000 to 0.0002 inches for tight hole sizing
• 4-flute straight design provides stable cutting action and good chip clearance
• Straight cylindrical shank for direct mounting in collets or drill chucks
• Right-hand cutting direction — standard for conventional reaming setups
• Bright, uncoated finish — no coating thickness to account for at this precision tolerance

Compatibility

Designed as a general-purpose chucking reamer for use in standard collet chucks, drill chucks, and floating reamer holders that accept a straight cylindrical shank at this diameter class.

Installation Notes

Chucking reamers are installed by qualified machinists and toolroom technicians. Secure the straight shank fully in a collet or chuck before operation, and ensure the spindle is at zero speed before mounting or removing the tool. Use appropriate cutting fluid for the workpiece material to maintain tool life and surface finish. Pre-drill or bore the hole to within a few thousandths of finished size before reaming — do not use a reamer as a primary hole-making tool.