Parting-Off Holders
Sumi-Grip Characteristics
• Holders available in carbide (SumiGrip) and steel (SumiGrip JR). • Capable on interrupted machining. • Can be used for cut-off, grooving and chamfering applications.
Type • Tool block type
STFH (steel) / WCFH (carbide) • Shank type STFS (steel) / WCFS (carbide)
Cut-Off
Features of Design
140
WCFH32
High performance insert
Cut-Off Diameter (mm)
120 100
STFH32
80
WCFH26 STFH26 STFS
60 40
Holder
Small wedge angle
GNDL
Optimal undercut shape
GNDL
WCFS
GNDM
GNDM
20
SCT 3
4
5
6
Width (mm)
SumiGrip JR
270
130
Competitor
3 mm width
80
0
100
200
300
High
9
Wear Resistance SumiGrip (carbide)
70
SumiGrip Jr. (steel)
60
Competitor
50 40 0
Holding Force of the Insert (N)
8
Low Vibration Holder Overhang Limit (mm)
Twice the Insert Holding Force
7
0,1
0,2
Work shape
0,15
Competitor Breakage
X
0,10
SumiGrip Jr. (steel) SumiGrip (carbide)
0,05
0
0,3
40mm
2
Flank Wear Width (mm)
1
Grooving & Parting-Off
0
50
Feed Rate (mm/rev)
100
Number of Cutt-Offs
Work Material: C45 (hexagonal) Insert: 3 mm width, coated carbide Cutting Conditions: vc = 150 m/min, f = 0,15 mm/rev, wet (water soluble)
Work Material: C45 (Ø 50 mm, 250 HB) Insert: 3 mm width, coated carbide Cutting Conditions: vc = 80 m/min, dry
GG Type/GF Type/CF Type Chipbreaker, Grade AC1030U Utilizing grooving tool GND type chipbreaker series for excellent chip control. Low cutting force chipbreaker GF type (neutral) or CF type (left or right handed) inserts, coupled with a carbide blade, enables stable machining and prevents chattering even when machining stainless steel. Achieving stable and longer tool life with the new AC1030U grade.
GG
GF
CF
Neutral
Neutral
L/R handed
General purpose
Exotic alloy, Low cutting force
Exotic alloy, Low cutting force
Performance (Chipbreaker) Chip Control Capability
GF
GG
Conventional
Work Material: X5CrMo17 12 2 (Ø 40 mm) Cutting Conditions: vc = 100 m/min, f = 0,1 mm/rev, wet
F45