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0.2900" Minimum Bore, 1.250" 1-1/4" Max Bore Depth, 0.2000" Tooth Width, 0.0720" Proj, 0.3125" 5/16" Shank, 2.50" 2-1/2" OAL, 0.0060" Radius Carbide Boring Bar TiN

0.2900" Minimum Bore, 1.250" 1-1/4" Max Bore Depth, 0.2000" Tooth Width, 0.0720" Proj, 0.3125" 5/16" Shank, 2.50" 2-1/2" OAL, 0.0060" Radius Carbide Boring Bar TiN
MICRO 100 INC.
BB2901250G
BB-2901250G
0.290"
UPC: 728709110485
Weight: 0.076 LBS
Brand: MICRO 100 INC.
$71.80
(10% off)
$64.62
each
6/30/2026
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Technical Details & Downloads
Technical/Extra Information Catalog Page
Product Description

0.2900" Minimum Bore, 1.250" 1-1/4" Max Bore Depth, 0.2000" Tooth Width, 0.0720" Proj, 0.3125" 5/16" Shank, 2.50" 2-1/2" Oal, 0.0060" Radius Carbide Boring Bar Tin

  • Designed for facing and boring applications in bores .0550" and larger
  • Polished split face for improved edge retention and chip evacuation while reducing galling
  • Split geometry makes the tool as rigid as possible
  • Corner radius profile
  • Lockdown flat automatically locates tool on center
  • Coating options provide added lubricity and increased wear resistance in difficult to machine materials
  • Solid carbide
  • CNC ground in the USA

This item is part of our complete offering of Micro 100 Precision Carbide Tools, a USA manufacturer known for high-performance solid carbide tooling designed for precision machining, tight tolerances, and superior surface finishes. Explore Micro 100 Internal Turning Tools for boring, grooving, and threading applications, Micro 100 External Turning Tools for OD turning, facing, and profiling, and the Micro 100 Micro-Quik Quick Change Tooling System for fast tool changes and increased production efficiency. Micro 100 tools are manufactured from high-quality solid carbide to deliver exceptional rigidity, accuracy, and tool life in demanding CNC turning and milling operations. Browse our full selection of Micro 100 Cutting Tools to compare sizes, geometries, and performance options to find the right solution for your application.

Made in U.S.A.
Shipping & Delivery Options
MERIDIAN, IDAHO, USA
  • UPS

Suncoast Shipping Deals

Min. order amount Shipping Option Special Rate Max Weight
$100.00 UPS Blue 2 Business Days $19.99 8 LBS
$50.00 MINIMUM ORDER
If ordered by 2:30pm Eastern Standard Time Micro-100 will Ship Same Business Day.
Factory Stock
22
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Additional Product Details

Technical Details

Manufacturer
MICRO 100 INC.
Manufacturer Part Number
BB-2901250G
Minimum Bore
0.2900"
Overall Length
2.500"
Shank Diameter
0.3125" 5/16"
Tip Radius
0.0060"
Bore Depth
1.250"
End Style
Radius
Tool Coating
TiN
Tool Substrate Material
Carbide
Hand Cutting Direction
Right Hand
Country of Origin
U.S.A.
Series
BB
Type
Standard
Neck Diameter
0.2180"
Split Length
0.220"
Projection Length
0.0720"

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