Hertel 2330157 Hand Reamer 1-7/16 in 10 Flutes Hss

Product Description

The HERTEL 2330157 is a hand reamer designed for precision hole finishing in metalworking applications. With a 1-7/16 inch (1.4375 inch decimal) diameter and 10 spiral flutes, it delivers smooth, accurate material removal to bring drilled or bored holes to a close tolerance final dimension. The spiral flute geometry with a left-hand spiral and right-hand cut reduces chatter and produces a cleaner finish than straight-flute designs. Constructed from high speed steel with a bright uncoated finish, the tool handles a wide range of ferrous and non-ferrous metals. Overall length is 12.88 inches with a flute length of 6.44 inches, and the shank is straight for use in standard reamer holders or a tap wrench.

This hand reamer is suited for toolroom, maintenance, and production environments where final hole sizing is performed by hand or with low-speed equipment. Typical applications include fitting close-tolerance pins, bushings, and bearings in precision assemblies. The 10-flute configuration is well-matched to larger diameter work where chip load per flute and surface finish quality are critical. Machinists, toolmakers, and maintenance technicians working in job shops, industrial facilities, and MRO settings are the primary users of this tool.

Key Features

• 1-7/16 inch (1.4375 inch) diameter for close-tolerance hole finishing
• 10 spiral flutes with left-hand spiral geometry reduce chatter and improve surface finish
• Right-hand cutting direction for standard forward reaming operation
• High speed steel construction provides durability across ferrous and non-ferrous materials
• Bright uncoated finish allows easy visual inspection of cutting edges
• Straight shank compatible with standard tap wrenches and reamer holders

Compatibility

Designed as a hand reamer for use in standard straight-shank reamer holders and tap wrenches suited to 1-7/16 inch diameter tooling.

Installation Notes

Hand reamers are installed and operated by machinists or toolmakers using a tap wrench or similar low-speed hand driver. The workpiece should be securely fixtured before reaming to prevent movement and maintain hole alignment. Apply cutting fluid appropriate to the workpiece material to extend tool life and improve surface finish. Never reverse a hand reamer under load, as this dulls cutting edges and can damage the flutes.