Iscar 4300014 Bku Wedge Clamp Tool Block Indexables

Product Description

The ISCAR 4300014 is a BKU-style wedge clamp tool block designed for use with indexable insert toolholders. It functions as a top clamp, securing indexable inserts in place during turning and grooving operations. The wedge clamp design provides consistent clamping force across the insert seat, helping maintain positioning and repeatability under cutting loads. This component is compatible with SR M6X30DIN912 12.9 clamp screws. It is intended for installation by machinists and toolroom technicians working with ISCAR SGTBU and TGTBU toolholder systems on CNC lathes and grooving setups.

This clamp block is used in precision metal-cutting environments, primarily on CNC turning centers and grooving machines. It is suited for both production and job-shop settings where indexable insert toolholders require periodic clamp replacement or upgrade. Compatible toolholders span a range of widths and configurations in the SGTBU and TGTBU series, covering groove widths and shank sizes common in industrial turning applications.

Key Features

• BKU wedge clamp style provides positive top clamping force on indexable inserts
• Compatible with SR M6X30DIN912 grade 12.9 clamp screws
• Fits a broad range of SGTBU and TGTBU series toolholders
• Designed as a direct OEM replacement for worn or damaged clamp blocks
• UNSPSC Code 23242100 for procurement system alignment

Compatibility

Compatible with the following ISCAR toolholders: SGTBU 25-6G, SGTBU 25-8M, SGTBU 25.4-6G, SGTBU 25.4-8M, SGTBU 25.4C-6, SGTBU 25C-6, SGTBU 31.8-6G, SGTBU 32-25-6G, SGTBU 32-6G, SGTBU 32-8M, SGTBU 38.1-6G, SGTBU 40-6G, TGTBU 19-35, TGTBU 20-35, TGTBU 25-35, TGTBU 25-6G-JHP, TGTBU 25.4-35, TGTBU 25.4-6G JHP, TGTBU 31.8-35, TGTBU 31.8-6G JHP, TGTBU 32-35, TGTBU 32-6G-JHP, TGTBU 38.1-35, TGTBU 40-35. Clamp screw compatibility: SR M6X30DIN912 12.9.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine powered down and the spindle fully stopped before accessing the toolholder. Use the correct grade 12.9 clamp screw specified for this block and tighten with a calibrated hex key to the torque value specified in the ISCAR toolholder documentation. Do not substitute lower-grade fasteners, as clamp integrity depends on screw strength grade.