
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).
● Suited for grooving various types of hardened steel. Range
Hardened Steel, Shallow Grooves of widths available from 1.5 to 6.0mm.
GWB CDX
WF
B
CW
External
External Grooving 3˚
LF
■ Parts
HF
H
HBH
■ Holders Dimensions (mm)
Stock Height Width Length Cutting Edge
Edge Height Step Width of Teeth(mm) Max. Groove Depth (mm) App
Cat. No. 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
(150) TF-72
1.5≤cw≤4.5 3.5~5.0 ❶ (Right-hand tool)
151 BX0520T 5.0 BFTX0511N GSP06 TRX20
GWB R/L 2525-45 D D 25 25
(150)
30 25 — TF-73
(Left-hand tool)
GWB R/L 2525-60 D D 25 25 151 30 25 — 4.5