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  • 6.3mm to 8mm and 7/32" to 5/16" dia.- DIN332 Form R, FormA+B and ANSI 60 degree indexable centre drill

6.3mm to 8mm and 7/32" to 5/16" dia.- DIN332 Form R, FormA+B and ANSI 60 degree indexable centre drill

i-Center Inserts
ANSI 60 degree - 1mm to 3.15mm dia. indexable centre drill_ insert NC2033

  • • NC2033: K20F grade, TiAlN coating.
       For carbon steel, alloy steel, high alloy steel and cast iron.
  • • Double ended.
  • • Drill Point Dia.: 6.3mm and 8mm ; 7/32" (#6), 1/4" (#7) and 5/16" (#8).
  • • Forms are available: DIN 332 form R, A+B and ANSI 60° (60° Countersink angle).
i-Center Holders
● We offering two holder type for your option: weldon shank and cylindrical shank with pre-balanced.
● One holder can be used with various type of insert- for various pilot diameter and form of center hole.
● Made of hardened high alloy steel, 58 HRC.
● 20mm dia. shank.
Nine9 20mm shank for center countersink carbide insert
Inquiry
i-Center Inserts
center_drill_type_R
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IC Part No Ød1 L1 L2 d2 R CT±0.025
20 I9MT2004R0630 6.3 14.63 18.2 13.2 18.0 28.40
20 I9MT2004R0800 8.00 18.63 20.44 17.0 22.5 28.30
i-Center Inserts
center_drill_type_A+B
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IC Part No Ød1 L1 L2 d2 d3 L3 CT±0.025
20 I9MT2004B0630 6.30 8.0 13.98 13.2 18.0 15.33 28.4
20 I9MT2004B0800 8.00 10.1 17.89 17.0 20.0 18.73 28.3
i-Center Inserts
Combined drills and countersinks
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IC Part No Ød1 L1 L2 d2 CT±0.025 Size
20 I9MT2004A6 7/32" 7/32" 11.8mm 1/2" 27.75 #6
20 I9MT2004A7 1/4" 1/4" 14.6mm 5/8" 28.5 #7
20 I9MT2004A8 5/16" 5/16" 17.6mm 3/4" 29.0 #8
Weldon Shank

● Made of hardened high alloy steel, 58 HRC.

● Coolant can be supplied through the center of the holder to increase performance and extend tool life.
Center Drill Countersink Bit

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IC Part No Insert Size Ød L1 L2 ØD
20 99616-IC20-20F I9MT20 20 50 51 32
20 99616-IC20-3/4F I9MT20 3/4" 50 51 32
Cylindrical Shank with Pre-balanced
• Made of hardened high alloy steel, 58 HRC.
• G6.3 / 10,000 r.p.m.

Nine9 indexable center drill_Cylindrical Shank with Pre-balanced
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IC Part No Insert Size Ød L1 L2 ØD
20 99616-IC20-20B I9MT20 20 50 86 32
Catalog Cutting Data Application Examples
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