Kennametal 1729929 Replaceable-tip Drill 23.81-24mm

Product Description

The KENNAMETAL 1729929 is a replaceable-tip drill body designed for precision hole-making in metalworking and machining applications. Built around the KSEM platform, this drill body accepts KSEM0938 series inserts at insert seat size 4, allowing the cutting tip to be swapped out without replacing the entire tool body. The drill covers a diameter range of 23.81 mm to 24 mm (0.9374 to 0.9449 inches), reaches a maximum drill depth of 238.13 mm (9.38 inches), and delivers a 10xD depth-to-diameter ratio. Overall length is 341.31 mm (13.44 inches), and flute length runs 261.10 mm (10.28 inches). This tool is intended for use on CNC machining centers and turning centers operated by machinists and tooling specialists.

The 1729929 is suited for production drilling in ferrous and non-ferrous metals where deep-hole capability and consistent diameter control are required. The straight-cylindrical shank measures 25.4 mm in diameter and 3.0 inches in length, fitting standard tool holders used on vertical machining centers, horizontal machining centers, and CNC lathes. The KSEM platform is a common choice in high-volume production environments where insert indexability reduces downtime and per-hole tooling cost. This drill body is appropriate for job shops and production facilities running batch operations that require repeatable, tight-tolerance bore diameters.

Key Features

• Accepts KSEM0938 series replaceable-tip inserts at insert seat size 4 for quick tip changes without removing the body from the spindle
• 10xD depth-to-diameter ratio enables deep-hole drilling in a single-pass setup
• Diameter range of 23.81 mm to 24 mm (0.9374 to 0.9449 inches) for near-finish bore sizing
• Straight-cylindrical shank at 25.4 mm diameter for compatibility with standard hydraulic and shrink-fit tool holders
• Flute length of 261.10 mm (10.28 inches) supports chip evacuation at full depth
• Coolant hole diameter of 3.50 mm (0.1378 inches) for through-spindle coolant delivery to the cutting zone

Compatibility

Designed for use with KSEM0938 series replaceable drill-tip inserts at insert seat size 4, part of the KENNAMETAL KSEM drill system. The straight-cylindrical shank is compatible with standard 25.4 mm tool holders on CNC machining centers and turning equipment.

Installation Notes

Installation and tool changes should be performed by a qualified machinist following the machine tool manufacturer's spindle lockout and zero-energy procedures before handling the tool body. The straight-cylindrical shank must be seated and clamped to the tool holder manufacturer's specified torque range using a calibrated torque wrench. Confirm insert seating and tip security before spindle engagement. Through-spindle coolant pressure and flow rate should be set per the machine tool and insert manufacturer's recommendations for the specific workpiece material.