SUMIBORON Grooving Tool holder GWB Type ■ Characteristics ● Tangentially-mounted insert enhances tool rigidity. ● Double clamping holder design improves stability during continuous and interrupted cutting. Can also be used for turning. ● Long tool life in interrupted cutting applications with the Coated SUMIBORON BNC30G special grade for grooving (BN2000 recommended for continuous cutting applications). Hardened Steel, Shallow Grooves ● Suited for grooving various types of hardened steel. Range of widths available from 1.5 to 6.0mm. GWB WF CDX B External Grooving External CW 3˚ LF HF ■ Parts H HBH ■ Holders Dimensions (mm) Stock Height Width Length Cutting Edge Step Width of Teeth(mm) Max. Groove Depth (mm) App Cat. No. Edge Height Clamps Cap Screw Nm Screw Spring Wrench R L H B LF WF HF HBH CW CDX Insert No. GWB R/L 2020-45 20 20 151 25 20 5 TF-72 (150) 1.5≤cw≤4.5 3.5~5.0 (Right-hand tool) ❶ BX0520T 5.0 BFTX0511N GSP06 TRX20 151 GWB R/L 2525-45 D D 25 25 30 25 — TF-73 (150) (Left-hand tool) GWB R/L 2525-60 25 25 151 30 25 — 4.5