Boring Bars
Top Notch™ threading boring bars are a standout choice for internal threading operations. These boring bars are expertly designed to perform a variety of tasks including grooving, turning, chamfering, and profiling. What sets them apart is their adaptability to different applications, as they come in a range of pitches and bore diameters. Steel and carbide shanks with coolant capabilities are available.
Filters
Filters
View filters in
MetricInch
Workpiece Material
- Steel (63)
- Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(63)
- Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(63)
- Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(63)
- Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(63)
- Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(63)
- Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(63)
- High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(63)
- Stainless Steel (63)
- Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(63)
- High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(63)
- Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(63)
- Cast Iron (63)
- Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(63)
- Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(63)
- High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(63)
- Non-Ferrous Materials (63)
- Wrought Aluminum (63)
- Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(63)
- High-Silicon Aluminum Alloys Si >12.2%(63)
- Copper, Brass, Zinc-based on machinability index range of 70-100 (63)
- Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (63)
- Carbon, Graphite Composites, CFRP (63)
- MMC's (63)
- High-Temp Alloys (63)
- Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(63)
- Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(63)
- Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(63)
- Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(63)
- Hardened Materials (63)
- Hardened Materials 44-48 HRC(63)
- Hardened Materials 48-55 HRC(53)
- Hardened Materials 56-60 HRC(26)
- Hardened Materials >60 HRC(26)
Applications
(62)
(4)
(63)
(63)
(2)
Type of Thread
- (61)
- (28)
- (26)
- (20)
- (18)
- (53)
- (30)
- (18)
- (18)
- (53)
- (18)
Cutting Condition Material
- (63)
- (63)
- (63)
- (63)
- (63)
- (63)
Cutting Condition
- (63)
- (63)
- (63)
Corner Radius
- (18)
- (61)
- (45)
- (18)
- (26)
- (38)
- (61)
- (18)
- (38)
- (18)
- (18)
- (26)
- (26)
- (20)
- (18)
- (26)
- (8)
- (45)
- (26)
- (27)
- (45)
- (2)
- (26)
- (45)
- (45)
- (45)
- (45)
- (18)
- (53)
- (45)
- (18)
- (26)
- (26)
- (26)
- (8)
- (8)
to
Corner Radius
- (18)
- (61)
- (45)
- (18)
- (26)
- (38)
- (61)
- (18)
- (38)
- (18)
- (18)
- (26)
- (26)
- (20)
- (18)
- (26)
- (8)
- (45)
- (26)
- (27)
- (45)
- (2)
- (26)
- (45)
- (45)
- (45)
- (45)
- (18)
- (53)
- (45)
- (18)
- (26)
- (26)
- (26)
- (8)
- (8)
to
Application
Minimum Feed
Minimum Feed
Grade Of Cutting Tool
- (8)
- (45)
- (53)
- (63)
- (33)
- (63)
- (26)
- (26)
- (18)
- (8)
- (53)
- (63)
- (63)
- (53)
- (53)
- (61)
- (53)
- (63)
- (18)
- (63)
- (55)
- (33)
- (53)
- (18)
- (53)
- (53)
- (53)
- (41)
- (53)
- (53)
- (53)
- (63)
- (63)
- (8)
- (18)
- (23)
- (26)
- (18)
- (45)
- (53)
- (53)
- (53)
- (53)
- (26)
Hand Of Tool
- (24)
- (39)
Minimum Bore Diameter
to
Maximum Axial Groove Diameter
to
Maximum Axial Groove Diameter
to
Boring Bar Material
- (9)
- (6)
- (48)
Front-End
Clamp Style
- (62)
Cutting Width
- 0.5 (27)
- 0.787 (35)
- 0.8 (27)
- 0.889 (27)
- 0.991 (27)
- 1.0 (45)
- 1.041 (27)
- 1.19 (37)
- 1.194 (53)
- 1.199 (12)
- 1.2 (45)
- 1.39 (27)
- 1.397 (27)
- 1.4 (27)
- 1.473 (27)
- 1.5 (45)
- 1.56 (12)
- 1.57 (33)
- 1.575 (53)
- 1.69 (27)
- 1.7 (27)
- 1.702 (27)
- 1.75 (45)
- 1.829 (18)
- 1.94 (27)
- 1.95 (27)
- 1.956 (27)
- 1.981 (18)
- 2.0 (45)
- 2.007 (27)
- 2.2 (45)
- 2.235 (45)
- 2.24 (35)
- 2.25 (37)
- 2.388 (53)
- 2.39 (10)
- 2.464 (18)
- 2.5 (45)
- 2.667 (18)
- 2.74 (27)
- 2.743 (45)
- 2.75 (45)
- 2.794 (18)
- 2.997 (45)
- 3.0 (53)
- 3.099 (18)
- 3.17 (18)
- 3.175 (53)
- 3.18 (20)
- 3.2 (53)
- 3.245 (27)
- 3.25 (18)
- 3.251 (45)
- 3.27 (27)
- 3.32 (8)
- 3.329 (8)
- 3.5 (53)
- 3.607 (18)
- 3.73 (12)
- 3.81 (27)
- 3.84 (27)
- 3.96 (18)
- 3.962 (18)
- 3.974 (8)
- 3.988 (18)
- 4.0 (26)
- 4.242 (26)
- 4.25 (18)
- 4.3 (18)
- 4.5 (26)
- 4.521 (18)
- 4.6 (8)
- 4.699 (21)
- 4.775 (26)
- 4.78 (3)
- 4.785 (3)
- 4.788 (5)
- 4.8 (18)
- 4.801 (26)
- 4.81 (18)
- 4.88 (8)
- 4.9 (8)
- 4.95 (18)
- 5.0 (8)
- 5.004 (8)
- 5.131 (8)
- 5.41 (8)
- 5.5 (8)
- 5.537 (2)
- 5.563 (8)
- 6.0 (8)
- 6.35 (10)
- 6.36 (5)
- 6.48 (8)
- 7.137 (2)
- 7.925 (2)
- 9.525 (2)
- 9.73 (2)
to
Cutting Width
- 0.0197 (27)
- 0.031 (35)
- 0.0315 (27)
- 0.035 (27)
- 0.039 (27)
- 0.0394 (45)
- 0.041 (27)
- 0.047 (53)
- 0.0472 (45)
- 0.055 (27)
- 0.0551 (27)
- 0.058 (27)
- 0.0591 (45)
- 0.062 (53)
- 0.0669 (27)
- 0.067 (27)
- 0.0689 (45)
- 0.072 (18)
- 0.076 (27)
- 0.0768 (27)
- 0.077 (27)
- 0.078 (18)
- 0.0787 (45)
- 0.079 (35)
- 0.0866 (45)
- 0.088 (45)
- 0.0886 (37)
- 0.094 (53)
- 0.097 (18)
- 0.0984 (45)
- 0.105 (18)
- 0.108 (45)
- 0.1083 (45)
- 0.11 (18)
- 0.118 (45)
- 0.1181 (53)
- 0.122 (18)
- 0.125 (53)
- 0.126 (53)
- 0.1278 (27)
- 0.128 (45)
- 0.129 (27)
- 0.131 (8)
- 0.1378 (53)
- 0.142 (18)
- 0.147 (12)
- 0.15 (27)
- 0.151 (27)
- 0.156 (18)
- 0.157 (18)
- 0.1574 (26)
- 0.1575 (26)
- 0.167 (26)
- 0.1673 (18)
- 0.169 (18)
- 0.1771 (26)
- 0.1772 (26)
- 0.178 (18)
- 0.185 (21)
- 0.188 (26)
- 0.189 (26)
- 0.192 (8)
- 0.193 (8)
- 0.195 (18)
- 0.1969 (8)
- 0.197 (8)
- 0.202 (8)
- 0.213 (8)
- 0.2165 (8)
- 0.2166 (5)
- 0.218 (2)
- 0.219 (8)
- 0.2362 (8)
- 0.25 (10)
- 0.255 (8)
- 0.281 (2)
- 0.312 (2)
- 0.375 (2)
- 0.383 (2)
- 1.93 (8)
to
Insert Size
- (8)
- (27)
- (18)
- (8)
- (2)
Insert Geometry
Cutting Tool Material
- (26)
- (18)
- (26)
- (23)
- (53)
- (63)
Back-End
Shank Height
to
Shank Width
to
