CBN - SUMIBORON Grooving Tool Holder GWB Toolholders
■ Features ● Vertically-mounted insert enhances tool rigidity ● Double clamping holder design improves stability during continuous and interrupted cutting. Can also be used for traverse cutting ● Long tool life for interrupted cutting applications with the Coated CBN - SUMIBORON BNC30G grade for grooving (BN2000 recommended for continuous cutting) ● Suited for grooving hardened steel, powdered metals, and cast irons. Variety of widths available from .059 to .236" and 1.5 to 6.0mm
F
External Grooving GWB
Double Clamp for Hardened Steel Shallow Grooves
External
Fig 1
CDX
Fig. 2
CDX
3˚
CW
LF
LF
Holder
Parts
Figure shows right hand (R) tool.
Dimensions (inch / mm )
Cap Screw
Flat Screw
Cutting Edge Distance
Cutting Edge Height
Stock Height Width Overall Length
Max. Groove Depth Group No.
Spring Wrench
Clamp
Width of Cut
Cat. No.
Fig
R L
N m
H B LF WFHF CW CDX GWB R/L 165D4 ● ● 1.001.00 6.000 1.181 1.0 .059 ≤ CW ≤ .177.138 to .197 1 1
TF72 (Right Hand) / TF73 (Left Hand) GWB R/L 165D6 ● ● 1.001.00 6.039 1.181 1.0 .059 ≤ CW ≤ .236 .197 2 1 GWBS R/L 125D4 ● ● .750 .750 6.000 .880 .750.059 ≤ CW ≤ .177 .138 to .197 1 2 GWBS R/L 165D4 ● ● 1.001.00 6.000 1.167 1.0 .059 ≤ CW ≤ .177 .138 to .197 1 2 GWBS R/L 165D6 ● ● 1.001.00 6.000 1.167 1.0 .177 ≤ CW ≤ .236 .197 2 2 GWBS R/L 205D4 ● ● 1.25 1.25 6.000 1.75 1.25.059 ≤ CW ≤ .177 .138 to .197 1 2 GWB R/L 2525-45 25 25 151 (150) 30 25 1.5 ≤ CW ≤ 4.5 3.5 to 5.0 1 1 GWB R/L 2525-60 25 25 151 30 25 4.5 < CW ≤ 6.0 5.0 2 1 Dimensions in ( ) are for width of cut (CW) of 3.0 or less. GWBR holders take Right-Handed insert – GWBL take Left-Handed inserts. GWBSR takes Left-Handed insert and clamp, GWBSL take Right-Handed insert and clamp. BX0520T 5.0 BFTX0511N GSP06 TRX20
Insert (
CBN / SUMIBORON)
Dimensions (inch / mm )
BN7000 BN7500 BN2000 BNC30G Width of Cut CW R L R L R L R L
Groove Depth CDX
Inscribed Circle IC
Thickness S
Group No.
Cat. No.
Applicable Holder Fig
Fig 1
● ● ● ● .062 .1378 .625 .1875 1 GWB R/L 1 □□D 4 GWB R/L 2525-45 1 ● ● ● ● .094 .1575 .625 .1875 1 1 ● ● ● ● .125 .1969 .625 .1875 1 1 ● ● ● ● .189 .1969 .625 .250 2 GWB R/L 2525-60 / GWB R/L 1 □□ D6 1
CGA R/L 4062 CGA R/L 4094 CGA R/L 4125 CGA R/L 6189
CDX
2-R0.2
CGA R/L 1504150 ● ● ● ● ● ● ● ● CGA R/L 1504200 ● ● ● ● ● ● ● ●
1.5 3.5 15.875 4.76 2.0 3.5 15.875 4.76 2.5 4.0 15.875 4.76 3.0 4.0 15.875 4.76 3.5 5.0 15.875 4.76 4.0 5.0 15.875 4.76 4.5 5.0 15.875 4.76 5.0 5.0 15.875 6.35 5.5 5.0 15.875 6.35 6.0 5.0 15.875 6.35
1 1 1 1 1 1 1 1 1 1
IC
● ● ● ●
CGA R/L 1504250
GWB R/L 1 □□D 4 GWB R/L 2525-45
CGA R/L 1504300 ● ● ● ● ● ● ● ●
1
● ● ● ●
CGA R/L 1504350
CGA R/L 1504400 ● ● ● ● ● ● ● ●
● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
CGA R/L 1504450 CGA R/L 1506500 CGA R/L 1506550 CGA R/L 1506600
GWB R/L 2525-60 GWB R/L 1 □□ D6
2
* It is also possible to manufacture widths of cut other than those listed above (CW = 1.5 to 6.0mm).
Recommended Cutting Conditions
Grade Features (See page L9 for details on BN7000 & BN7500)
Grade Application Range
Features
HV(GPa) TRS(GPa)
Cutting Conditions Cutting Speed v c (SFM)
H Hardened Steel 260 to 400
BN2000 Continuous Grooving BNC30G Interrupted Grooving
General-purpose grade with superior wear resistance Grade suited to interrupted grooving. Features tough substrate and special ceramic coating that exhibits both peel-off and wear resistance.
31 to 34 1.0 to 1.1
Feed Rate f (IPR)
.0016 to .0032
* In order to avoid thermal cracking of the SUMIBORON cutting edge during interrupted cutting, ensure that the work material is thoroughly dry before cutting.
33 to 35 1.1 to 1.2
Application Examples
Tooling
Work Material
Tool Cat. No. Cutting Condition
Tool Life Comparison
Shaft Grooving: Continuous
GWB Type BN2000
v c : 120m/min f : 0.05mm/rev Groove Depth: 2mm Dry v c : 100m/min f : 0.05mm/rev Groove Depth: 1.6mm Dry
No Chipping
Carburized steel 58 to 62HRC
CGAR1504200 BN2000
Conventional Tool
Chipping
500
0
1,000
Required Surface Roughness for Groove Sides: Ra0.4μm
No. of Workpieces (pcs)
Spline Grooving: Interrupted
GWB Type BNC30G Competitor's Product
Carburized steel 58 to 62HRC
CGAR1504200 BNC30G
No Chipping
Chipping
F56
400
200
600
0
No. of Workpieces (pcs)
N m Recommended Tightening Torque (N·m)
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