Busch Carbide Round Cutter | Busch No. 421X 031 – Crosscut – HP | Pack of 1
The carbide cutter round medium double cut from Busch & Co. GmbH is a precision rotary tool engineered for controlled material removal across a wide range of professional applications. Classified under ISO 500 104 001 190 031, this instrument delivers reliable performance in demanding technical environments.
Product Overview
This carbide cutter round medium double cut features a round head geometry combined with a medium double cut pattern, offering a balanced blend of cutting aggressiveness and surface finish quality. The double cut configuration produces a crosshatch pattern of flutes that efficiently clears debris while reducing vibration and chatter during operation. As a carbide cutter round medium double cut, it is suited to professionals who require consistent, repeatable results.
Applications
The carbide cutter round medium double cut is well-suited for the following dental laboratory applications:
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Crown and Bridge Technology — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory. |
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Plastics Technology — Shaping, trimming and finishing of acrylic dentures and appliances. |
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Model Making — Trimming and detailing of plaster and stone models. |
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Model Casting Technique — Finishing and adjustment of cast metal frameworks. |
Key Features
- Round head geometry for versatile contouring
- Medium double cut for efficient stock removal and controlled finishing
- Tungsten carbide construction for durability and long service life
- ISO Classification: 500 104 001 190 031
- Manufactured in Germany to high quality standards
- Supplied as a pack of 1
Instrument Dimensions
| Head Ø | 3.1 mm (ISO size 031) |
|---|---|
| Shank | HP (Straight Handpiece) — 2.35 mm Ø, 44.5 mm overall length (ISO 104) |
Per ISO 6360, the size number is the maximum head diameter in tenths of a millimeter. See our Busch Bur Size Chart for the full size conversion table, shank codes, and color ring guide.
Busch Warranty & 90-Day Returns
This Busch instrument is guaranteed against manufacturing and workmanship defects — we'll repair or replace it under normal professional use. Unused product in original packaging can also be returned or exchanged within 90 days of your invoice date. Full terms are on our Warranty page.
FAQ
What does medium double cut mean? Medium double cut refers to a flute pattern with two sets of intersecting grooves, providing moderate material removal rates with a smoother finish compared to single cut.
Is this carbide cutter round medium double cut suitable for dental laboratory use? Yes, it is specifically listed for Crown and Bridge Technology and Model Casting Technique applications.
Who manufactures this cutter? This instrument is made by Busch & Co. GmbH and is manufactured in Germany.
Specifications: Busch No. 421X 031
| Busch figure | 421X |
| Shape | Round |
| ISO size / head diameter | 031 (3.1 mm max head Ø) |
| Cut type / toothing | Crosscut |
| Shank | HP |
| Lab applications (per Busch) | Crown and Bridge Technology, Model Casting Technique, Model Making, Plastics Technology |
| Pack size | Pack of 1 |
| Material | Tungsten carbide |
The round head cuts in every direction, which makes it the shape for opening, hollowing and relieving acrylic, plaster and model surfaces rather than for flat work. Its crosscut (double-cut) toothing removes stock quickly and clears chips well, so it is a shaping rather than a finishing cutter. The 3.1 mm head is a large size for fast reduction of denture bases and broad framework surfaces.
Read the guides: Dental Laboratory Burs, Polishers & Abrasives · Bur Speed Chart · Dental Bur Glossary · All lab carbide cutters
Part of our Double Cut Burs: Busch Crosscut Carbide Cutter Collection — browse all 142 shapes, cuts and sizes.
Busch Carbide Round Cutter | Busch No. 421X 031 – Crosscut – HP | P...
