Ball Nose, Backdraft and Flat Bottom Inserts
Dapra's precision-ground Ball Nose Inserts are offered in a variety of geometries and coatings to produce superior surface finishes and achieve closer tolerances and longer life.
HBN Series – Helical Cutting Edge Ball Nose Inserts
Optimize performance in all Ball Nose applications:
- Smoother cutting action
- Reduced chatter
- Cleaner surface finish
- Heavier cutting capability
- Increased metal removal
- Reduced stress on work materials
- Reduced tool pressure and heat
- Longer tool life
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HBN Helical Ball Nose Inserts D Ø
Dia.Insert 3/8" HBN-0375 1/2" HBN-0500 5/8" HBN-0625 3/4" HBN-0750 1" HBN-1000 1-1/4" HBN-1250
Standard Ball Nose Inserts – without chipbreaker
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Standard Ball Nose Inserts – without chipbreaker D Ø
Dia.Without Chipbreaker 3/8" BNR-0375-N 1/2" BNR-0500-N 5/8" BNR-0625-N 3/4" BNR-0750-N 1" BNR-1000-N 1-1/4" BNR-1250-N -
Metric Sizes – without chipbreaker D Ø
Dia.Without Chipbreaker 10mm BNR-10MM-N 12mm BNR-12MM-N 16mm BNR-16MM-N 20mm BNR-20MM-N 25mm BNR-25MM-N 30mm BNR-30MM-N† 32mm BNR-32MM-N -
† Use BNEM 1250 cutter body and size 32 insert screws.
Standard Ball Nose Inserts – with chipbreaker
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Standard Ball Nose Inserts – with chipbreaker D Ø
Dia.With Chipbreaker 5/16" BNR-0312-CB 3/8" BNR-0375-CB 1/2" BNR-0500-CB 5/8" BNR-0625-CB 3/4" BNR-0750-CB 1" BNR-1000-CB 1-1/4" BNR-1250-CB -
Metric Sizes – with chipbreaker D Ø
Dia.With Chipbreaker 8mm BNR-08MM-CB 10mm BNR-10MM-CB 12mm BNR-12MM-CB 16mm BNR-16MM-CB 20mm BNR-20MM-CB 25mm BNR-25MM-CB 32mm BNR-32MM-CB
BDR Series – Back Draft Inserts
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BDR Backdraft Inserts D Ø
Dia.Without Chipbreaker Chipbreaker Corner Radius 1/32 1/16 1/8 3/8" BDR-0375-N • • 1/2" BDR-0500-N BDR-0500-CB • • • (CB) 5/8" BDR-0625-N BDR-0625-CB • • 3/4" BDR-0750-N BDR-0750-CB • • • (CB) 1" BDR-1000-N BDR-1000-CB • • • PCD-Tipped Inserts† NEW 3/8" BDR-0375-N-PCD • 1/2" BDR-0500-N-PCD • • 3/4" BDR-0750-N-PCD • • -
Back draft angle: 7° per side
† Note: DOC of PCD-Tipped Inserts is .125"
FBR Series – Flat Bottom Inserts
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FBR Flat-Bottom Inserts D Ø
Dia.Without Chipbreaker Chipbreaker Corner Radius 1/32 1/16 1/8 3/8" FBR-0375-N • 1/2" FBR-0500-N FBR-0500-CB • • 5/8" FBR-0625-N FBR-0625-CB • • 3/4" FBR-0750-N FBR-0750-CB • • 1" FBR-1000-N FBR-1000-CB • • •
HFBD Series – High-Feed Inserts
Ultimate roughing capability for smaller-diameter applications:
- 3/8" to 1" diameter
- Use for cavity/core roughing, pocketing, detail area roughing and helical interpolation
- Must be run with a BNEM cutter body (will not fit BDEM cutters)
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HFBD Series High-Feed Inserts D Ø
Dia.Insert Uses Cutter Program Radius Corner Radius FPT Max. DOC 3/8" HFBD-0375 BNEM0375 / GWR10† .0295" .020" .010-.020 .013" 1/2" HFBD-0500 BNEM0500 / GWR12† .0558" .034" .012-.025 .020" 5/8" HFBD-0625 BNEM0625 / GWR16† .0766" .048" .012-.030 .025" 3/4" HFBD-0750 BNEM0750 / GWR20† .0852" .062" .012-.040 .028" 1" HFBD-1000 BNEM1000 / GWR25† .1104" .076" .012-.040 .033" † MOD, Undersized Cutters or Metric. DAPRA recommends a maximum 1° ramp angle on these inserts.
Click here for speed recommendations by material.
Dapra Ball Nose products are made in the USA.