CBN - SUMIBORON Grooving Tool Holder GWB Type
■ 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
Dimensions (inch / mm )
Cap Screw
Flat Screw
Overall Length
Cutting Edge Distance
Cutting Edge Height
Width of Cut
Max. Groove Depth Group No.
Stock Height Width
Clamp
Spring Wrench
Cat. No.
Fig
R L
N m
H B LF WFHF CW CDX
● ● 1.00 1.00 6.000 1.181 1.0 .059 ≤ CW ≤ .177 .138 to .197 1 1
GWB R/L 165D4 GWB R/L 165D6
TF72 (Right Hand) / TF73 (Left Hand) ● ● 1.00 1.00 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 ● ● 1.00 1.00 6.000 1.167 1.0 .059 ≤ CW ≤ .177 .138 to .197 1 2 GWBS R/L 165D6 ● ● 1.00 1.00 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 (
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 1 1 1 1 1 1 1 1 1
1.5 3.5 15.875 4.76
2.0 3.5 15.875 4.76
IC
● ● ● ●
CGA R/L 1504250
2.5 4.0 15.875 4.76
GWB R/L 1 □□D 4 GWB R/L 2525-45
CGA R/L 1504300 ● ● ● ● ● ● ● ●
1
3.0 4.0 15.875 4.76
● ● ● ●
CGA R/L 1504350
3.5 5.0 15.875 4.76
CGA R/L 1504400 ● ● ● ● ● ● ● ●
4.0 5.0 15.875 4.76
● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●
CGA R/L 1504450 CGA R/L 1506500 CGA R/L 1506550 CGA R/L 1506600
4.5 5.0 15.875 4.76
5.0 5.0 15.875 6.35
GWB R/L 2525-60 GWB R/L 1 □□ D6
2
5.5 5.0 15.875 6.35
6.0 5.0 15.875 6.35
* 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
H Hardened Steel
BN2000
260 to 400
Cutting Speed v c (SFM)
Continuous 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
BNC30G
Interrupted Grooving
* 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
No. of Workpieces (pcs)
Required Surface Roughness for Groove Sides: Ra0.4μm
Spline Grooving: Interrupted
GWB Type BNC30G Competitor's Product
No Chipping
Carburized steel 58 to 62HRC
CGAR1504200 BNC30G
Chipping
400
200
600
0
No. of Workpieces (pcs)
F46
N m Recommended Tightening Torque (N·m)
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