Iscar 2500550 Indexable Grooving Toolholder External Left Hand

Product Description

The ISCAR 2500550 is an external, left-hand indexable grooving toolholder in the Heli-Grip series. It accepts DG and GRIP style inserts secured by a clamp-style insert holding method, making insert changes straightforward in production environments. The shank measures 0.75 inches by 0.75 inches with a shank length of 3.8 inches and an overall length of 5.5 inches. Maximum workpiece diameter is 1.97 inches. Minimum groove width is 0.157 inches and maximum groove width is 0.187 inches. This toolholder is rated for universal primary workpiece material compatibility, covering a broad range of metals. Licensed machinists and CNC lathe operators are the primary installers of this tool.

This toolholder is suited for external grooving operations on CNC lathes and turning centers. It is designed for applications requiring consistent, repeatable groove profiles across ferrous and non-ferrous materials. The Heli-Grip series targets production environments where quick insert indexing and secure clamping reduce cycle time. Back of bar to cutting edge measures 0.69 inches, and head length is 1.7 inches, supporting reach into tighter workpiece configurations. Its multi-use designation allows it to handle a variety of grooving tasks without retooling.

Key Features

• External, left-hand configuration for standard external grooving on CNC turning equipment
• Clamp-style insert holding method ensures rigid insert retention during aggressive cuts
• Compatible with DG and GRIP series inserts in size code DG.-4 and GRIP-4
• Groove width range of 0.157 to 0.187 inches supports precise, narrow groove profiles
• Multi-use tool designation covers universal workpiece materials including steel, cast iron, stainless, aluminum, and superalloys
• Coolant-through feature not present — suitable for standard flood or dry cutting setups

Compatibility

Compatible inserts include DGL 4003C-4D, DGN 4003C, DGN 4003J, DGN 4003JT, DGR 4003C-4D, GRIP 4002Y, GRIP 4004Y, GRIP 4020Y, GRIP 476-080Y, and GRIP 476-238Y. Insert size codes DG.-4 and GRIP-4 apply. Primary workpiece material codes H, K, M, N, P, and S are supported.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Before mounting the toolholder, ensure the machine spindle is fully stopped and locked out per your facility lockout-tagout procedure. Secure the shank in the turret or tool block to the machine manufacturer's specified clamping torque using appropriate toolholder fasteners. Verify insert seating and clamp engagement before initiating any cutting cycle.