Kennametal 1517240 Replaceable Tip Drill Ksem Series

Product Description

The KENNAMETAL 1517240 is a replaceable-tip drill body designed for deep-hole drilling in metal-cutting applications. Built on the KSEM platform, this drill body accepts KSEM1250 inserts at seat size 8, allowing the cutting tip to be swapped without removing the holder from the machine. The body covers a drill diameter range of 31.75 to 32 mm (1.250 to 1.260 inches) and reaches a maximum drill depth of 254 mm (10.00 inches), representing an 8xD depth-to-diameter ratio. Overall length is 384.18 mm (15.12 inches). Through-coolant capability is standard, delivered via NPT-threaded coolant ports at both the body side and shank end. Licensed machinists and CNC operators working in production shops are the primary users of this tooling.

This drill body is suited for high-production machining environments where deep, accurate holes in diameters near 31.75 to 32 mm are required. The Weldon flat shank, 31.75 mm in diameter, seats securely in standard Weldon-style toolholders on machining centers and CNC lathes configured for driven tools. The 8xD depth capability makes it appropriate for through-holes and blind bores in structural components, hydraulic blocks, and similar workpieces where repositioning or step drilling would otherwise be required. The replaceable-insert design reduces tooling cost and downtime compared to brazed or solid-carbide alternatives in this diameter class.

Key Features

• Accepts KSEM1250 replaceable cutting inserts at insert seat size 8 for fast tip changes at the machine
• Through-coolant design with 1/8-27 NPT body side port and 1/4-18 NPT shank end port for effective chip evacuation and heat management at depth
• 8xD maximum drill depth ratio reaches 254 mm (10.00 inches) in a single pass
• Weldon flat shank, 31.75 mm diameter, provides positive drive and resists rotation under high feed loads
• Flute length of 285.91 mm (11.26 inches) supports chip clearance across the full depth range
• Part of the KSEM series platform, enabling insert and seat interchangeability across compatible holders in the family

Compatibility

Designed for use with KSEM1250 series replaceable cutting inserts at seat size 8. The Weldon flat shank interface is compatible with standard 31.75 mm Weldon-style toolholders used on CNC machining centers and similar machine tools.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a locked-out, de-energized state per applicable lockout/tagout procedures. Torque the Weldon setscrew against the flat to the toolholder manufacturer specification. Verify coolant port connections are clear and the through-coolant supply is active before initiating a cut, as interrupted coolant flow at 8xD depth can cause rapid insert failure and workpiece damage. Inspect the insert seat for chips or debris each time the cutting tip is replaced.