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Busch Carbide 70 Hart Burs Fig 446AU 3/32" Shank .90mm-2.30mm-By the Piece - Otto Frei
Busch Carbide 70 Hart Burs Fig 446AU 3/32" Shank .90mm-2.30mm-By the Piece - Otto Frei
Busch Burs

Busch Fig 446AU Carbide 70 Hart Burs 3/32" Shank .90mm-2.30mm By the Piece

13 of 15 options in stock
$21.95
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Description

These burs cut clean, accurate stone seats in prongs on precious and hard metals. Sold by the piece, Busch Fig 446AU carbide 70 degree hart burs mount on a 3/32" shank, and the sharp carbide blades bite smoothly into the metal for a controlled, predictable feel at the handpiece.

Features

  • 70 degree hart profile engineered specifically for cutting prong seats for stone setting
  • Carbide construction for extremely long service life compared with steel or tungsten vanadium burs
  • Suitable for use on platinum, titanium, steel, and standard gold alloys
  • Precision Busch blade geometry provides aggressive yet controllable cutting action
  • Calibrated diameter range to match common prong and stone seat dimensions
  • 3/32" shank

Available Options

Part # Diameter
BAU118.609 0.90 mm (0.035 in)
BAU118.610 1.00 mm (0.039 in)
BAU118.611 1.10 mm (0.043 in)
BAU118.612 1.20 mm (0.047 in)
BAU118.613 1.30 mm (0.051 in)
BAU118.614 1.40 mm (0.055 in)
BAU118.615 1.50 mm (0.059 in)
BAU118.616 1.60 mm (0.063 in)
BAU118.617 1.70 mm (0.067 in)
BAU118.618 1.80 mm (0.071 in)
BAU118.619 1.90 mm (0.075 in)
BAU118.620 2.00 mm (0.079 in)
BAU118.621 2.10 mm (0.083 in)
BAU118.622 2.20 mm (0.087 in)
BAU118.623 2.30 mm (0.091 in)

Notes

  • Carbide burs offer the longest service life compared with tungsten vanadium and high-speed steel burs.
  • Use light, controlled hand pressure and let the bur do the cutting, especially in very hard alloys.
  • Other Busch carbide shapes are available separately: Fig 414AU 90 degree hart bur (Part # BAU118.509) and Fig 413AU traditional setting bur (Part # BAU118.808AU).

Specifications

Brand
Busch Burs
Part #
Varies by bur size
Type
Burs
Bur Type
70 degree hart bur, Fig 446AU
Application
Cutting stone seats in prongs
Material
Carbide
Diameter Range
0.90–2.30 mm (0.035–0.091 in)
Shank
3/32 in (approx. 2.38 mm)
Recommended Speed
2,000–10,000 RPM
Sold By
Piece
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.

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