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CUT-OFF INSERTS
Edge Prep. and Chipbreakers (CERACUT Plunge & Turn)
Name MT Chipbreaker TK Chipbreaker TMR Chipbreaker Without Chipbreaker (NB) GRADES
Edge
Preparation Chamfered + Honed Chamfered + Honed Chamfered + Honed Sharp Edge Chamfered + Honed Honed Cutting Edge Sharp Edge A
Corner-R Sharp Edge Corner-R Corner-R Corner-R Corner-R Sharp Edge B
0.002" 0.008" 0.002" C
0.05mm 0.008"~0.012" 0.008"~0.012" 0.20mm 0.05mm E
0.20~0.30mm 0.20~0.30mm F
G
INSERTS H
J
CR9025 / PR915 PR930 / KW10 CR9025 / PR915 PR930 / KW10 PR1115 CR9025 PR930 / KW10 L
M
• Sharp Edge can reduce cutting resistance by 40%, compared with chamfered edge CBN & PCD P
R
Name Advantages TURNING T
GMM-MT
GMM-NB Specific chipbreaker for cut-off operations requiring sharp cutting performance BORING
GMM-TK Minimizes the boss
Cutting edge is flat with no chipbreaker.
GMN-TK Good performance for brass, etc.
GMN (Std.) Stable design with chipbreaker for cut-off.
Large corner-R
2-edge for economical performance
Same chipbreaker geometry as GMM-TK
1-edge.
Wide application range.
Mainly for deep grooving, but available for groove widening and turning due to projection near side cutting edge.
1-edge and wide application range. Available for cut-off applications.
TMR Chipbreaker G MM Chipbreaker Map GROOVING
C hipbreaker Advantages
Special
Curved Wall
CUT-OFF
Improved chip evacuation THREADING SOLID END MILLS
by squeezing chips
Depression in Center of Chip Width Grooving Width
Cutting Edge
T he TMR Chipbreaker Provides Stable Chip Control at High Feed Rates
Good chip control even when cutting speed (spindle revolution) is increased
(Cutting Conditions : 15CrMo4, 30, Constant Spindle Revolution)
Part Number n=1060min-1(Vc=325sfm) n=2123min-1(Vc=650sfm) MILLING
f=0.0008ipr f=0.0047ipr f=0.0008ipr f=0.0047ipr
GMM SPARE PARTS
3020-TMR
(Neutral)
GMM TECHNICAL
3020R-TMR-6D
(Right-Hand)
R ecommended Cutting Conditions W orkpiece Surface Roughness
Workpiece Vc (sfm) Feed Rate (ipr) TMR Chipbreaker provides good surface roughness on the
Material workpiece end face at high feed rate ranges.
Carbon Steel 200~650 INDEX
Alloy Steel 200~500 0.003~0.007
Stainless Steel 175~450
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