Iscar 3201851 Indexable Insert Drill 1.65in 3xd

Product Description

The ISCAR 3201851 is an indexable insert drill from the DR-TWIST series, designed for holemaking operations in metal cutting and machining applications. The body accepts two SOMT-style inserts and delivers a maximum drill depth of 4.5 inches at a 3xD depth-to-diameter ratio. The cutting diameter reaches 1.65 inches, with a straight cylindrical shank measuring 1.5 inches in diameter. Internal coolant delivery is supported through 1/16-27 NPT coolant-through ports, helping manage chip evacuation and heat during drilling cycles. This drill body is installed and serviced by machinists, CNC programmers, and tooling specialists in production and job-shop environments.

The ISCAR 3201851 is suited for general-purpose holemaking in ferrous and non-ferrous materials. It fits vertical machining centers, horizontal machining centers, and CNC lathes with live tooling capable of accepting a 1.5-inch straight shank. The 3xD ratio makes it appropriate for through-holes and moderate-depth blind holes in structural components, flanges, plates, and similar workpieces where consistent hole quality is required across production runs.

Key Features

• 1.65-inch maximum cutting diameter with a 3xD depth-to-diameter ratio
• Accepts two SOMT-DT and SOMT-GF compatible indexable inserts
• Coolant-through design with 1/16-27 NPT internal coolant ports for chip and heat management
• Straight cylindrical shank at 1.5 inches diameter for broad machine compatibility
• Body length of 5.96 inches with a neck and collar diameter of 1.969 inches
• General-purpose tool performance classification suitable for a wide range of workpiece materials

Compatibility

Compatible with SOMT-DT and SOMT-GF indexable insert styles in size code 120408-DT. Modular connection size is 1.5 inches. Designed for use in machine spindles and toolholders accepting a 1.5-inch straight cylindrical shank per the DR-TWIST series specification.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Verify that the machine spindle and toolholder are rated for the shank diameter before mounting. Power down and lock out the machine before inserting or removing the drill body or indexing inserts. Follow the machine tool manufacturer torque and runout specifications for toolholder clamping; do not exceed the insert pocket clamp screw torque specified in the ISCAR insert tooling documentation supplied with the inserts.